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MICROMASTER

Operating Instructions

Issue A2

User Documentation

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  MICROMASTER Operating Instructions Issue A2 User Documentation…
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  Overview Installation Commissioning MICROMASTER 420 Using the MICROMASTER 420 Operating Instructions System Parameters User Documentation Troubleshooting MICROMASTER 420 Specifications Supplementary Information Appendices Valid for Release Inverter Type Control Version MICROMASTER 420 October 2000 Index Issue: A2…
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  We welcome suggestions for improvement. MICROMASTER® is a registered trademark of Siemens. Siemens handbooks are printed on chlorine-free paper that has been produced from managed sustainable forests. No solvents have been used in the printing or binding process.
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  ♦ Getting Started Guide The Getting Started Guide is designed to give you quick access to all the basic information required to install and set up your MICROMASTER 420 for operation. ♦ Operating Instructions The Operating Instructions provide detailed information for installation and operation of your MICROMASTER 420.

• Page 6: Using The

  Siemens. Contact address Should any questions or problems arise while reading this manual, please contact the Siemens office concerned using the form provided at the back this manual. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 7: Micromaster

  Please read the information carefully, since it is provided for your personal safety and will also help prolong the service life of your MICROMASTER 420 Inverter and the equipment you connect to it. General Warnings ♦…

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  The connection of power, motor and control cables to the inverter must be carried out as shown in Figure 2-4 on page 25, to prevent inductive and capacitive interference from affecting the correct functioning of the inverter. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  EN 60204, 9.2.5.4) Repair Warnings ♦ Repairs on equipment may only be carried out by Siemens Service, by repair centers authorized by Siemens or by qualified personnel who are thoroughly acquainted with all the warnings and operating procedures contained in this manual.
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  International English FOREWORD MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 11: Table Of Contents

  Ambient operating conditions ………………19 Mechanical Installation ………………..20 Electrical Installation ………………..21 Commissioning ………………….27 Front Panels for the MICROMASTER 420 …………..29 General operation ………………….. 34 Using the MICROMASTER 420 …………….37 Frequency Setpoint………………… 38 Command Sources (P0700) ………………38 OFF and braking Functions ………………

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  D — Removing ‘Y’ Cap Frame Size A ………………115 E — Removing ‘Y’ Cap Frame Sizes B and C …………….117 F — User Parameter Settings …………………. 119 G — Applicable Standards ………………….121 H — List of Abbreviations………………….123 Index ……………………..125 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Motor and Power Connections ………………23 Figure 2-4 Wiring Guidelines to Minimize the Effects of EMI …………. 25 Figure 3-1 Panels available for the MICROMASTER 420 Inverter ………… 29 Figure 3-2 Basic operation with SDP………………..30 Figure 3-3 Buttons on the Basic Operator Panel…………….31 Figure 3-4 Changing parameters via the BOP………………
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  MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 15: Overview

  OVERVIEW International English Overview This Chapter contains: A summary of the major features of the MICROMASTER 420 range. The MICROMASTER 420………………. 16 Features ……………………16 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 16: The Micromaster 420

  Comprehensive protective functions provide excellent inverter and motor protection. The MICROMASTER 420 with its default factory settings, is ideal for a large range of simple motor control applications. The MICROMASTER 420 can also be used for more advanced motor control applications via its comprehensive parameter lists.

• Page 17: Installation

  General data relating to installation ♦ Dimensions of Inverter ♦ Wiring guidelines to minimize the effects of EMI ♦ Details concerning electrical installation General……………………18 Ambient operating conditions ………………19 Mechanical Installation ………………..20 Electrical Installation ………………..21 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 18: General

  Apply 25% of input voltage for 2 hours Increase volts to 50% for a further 2 hours Increase volts to 75% for a further 2 hours Increase volts to 100% for a further 2 hours Inverter ready for run signal MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 19: Ambient Operating Conditions

  Overheating Mount the inverter vertically to ensure optimum cooling. Additional ventilation may be required for horizontal mounting. Ensure that the inverter’s air vents are not obstructed. Allow 100 mm clearance above and below the inverter. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 20: Mechanical Installation

  4 washers M5 204 mm 8.03″ 245 mm Tightening 9.65″ torque (unit to cabinet) with washers fitted: 3 Nm 174 mm 185 mm 195 mm 6.85″ 7.28″ 7.68″ Figure 2-1 Drill pattern for MICROMASTER 420 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 21: Electrical Installation

  A type B RCD is used. The trip limit of the RCD is 300mA. The neutral of the supply is grounded. Only one inverter is supplied from each RCD. The output cables are less than 50m (screened) or 100m (unscreened). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 22
  To tighten up the power terminal screws use a 4 — 5 mm cross-tip screwdriver. Access to the power and motor terminals The procedure for accessing the power and motor terminals on the MICROMASTER 420 Inverter is illustrated in Appendices B and C. Please also refer to the photographs showing the Power Terminal connections and the Control Terminal connections on the inside of the back cover of this manual.
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  2. INSTALLATION International English N/L2 L/L1 (Ground) (Ground) Figure 2-2 MICROMASTER 420 Connection Terminals OPTIONAL FILTER (Class B only) CONTACTOR MICROMASTER MOTOR FUSE L/L1 N/L2 SINGLE PHASE TYPICAL INSTALLATION OPTIONAL FILTER CONTACTOR MICROMASTER MOTOR FUSE THREE PHASE Figure 2-3 Motor and Power Connections…
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  ♦ Use screened or armored cables for the motor connections and ground the screen at both ends using the cable clamps Warning Safety regulations must not be compromised when installing inverters! MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Use suitable clips to fix motor and control cable screens securely to metal back plate Note To enhance the screening of the motor and control cables, the optional Gland Plate can be used (not shown in Figure 2-4). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  International English 2. INSTALLATION MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 27: Commissioning

  Basic Operator Panel (BOP) ♦ An 8-step guide at the end of the Chapter, which provides a simple procedure for changing parameters Front Panels for the MICROMASTER 420 …………..29 General operation ………………….. 34 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

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  Only qualified personnel may enter settings in the control panels. Particular attention must be paid to safety precautions and warnings at all times. The MICROMASTER 420 is supplied with a Status Display Panel (SDP) and default parameter settings that cover the following requirements: ♦…

• Page 29: Front Panels For The Micromaster 420

  Front Panels for the MICROMASTER 420 Front panels The front panels shown below are available for use with the MICROMASTER 420 Inverters. The panel on the left is supplied with the inverter as standard and is referred to as the Status Display Panel (SDP). The Basic Operator Panel (BOP) and Advanced Operator Panel (AOP) are available as options.

• Page 30: Table 3-2 Default Settings For Operation Using The Bop

  Commissioning with the Basic Operator Panel (BOP) The Basic Operator Panel (BOP), which is available as an option, provides access to the inverter parameters and enables you to customize the settings of your MICROMASTER 420. The BOP can be used to configure several MICROMASTER 420 150.00 Inverters.

• Page 31: Figure 3-3 Buttons On The Basic Operator Panel

  To change the Frequency Setpoint via the BOP set P1000 = 1. Pressing this button decreases the displayed value. Decrease value To change the Frequency Setpoint via the BOP set P1000 = 1. Figure 3-3 Buttons on the Basic Operator Panel MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 32: Figure 3-4 Changing Parameters Via The Bop

  Note — Busy Message In some cases — when changing parameter values — the display on the BOP shows » — — — -«. This means the inverter is busy with tasks of higher priority. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 33: Figure 3-5 Typical Motor Rating Plate Example

  Figure 3-6. 1 kΩ Figure 3-6 Motor Overload PTC Connection Note: To enable the trip function, set parameter P0701, P0702 or P0703 = 29. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 34: General Operation

  (P0005 = 21) the corresponding setpoint is displayed approximately every 1.0 seconds while the inverter is stopped. 3. The inverter is programmed at the factory for standard applications on Siemens four- pole standard motors that have the same power rating as the inverters. When using other motors it is necessary to enter the specifications from the motor’s rating plate.

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  3. When the inverter reaches 50 Hz, press the ‘DOWN’ Button. Motor speed and display is decreased. 4. Change the direction of rotation with the FORWARD / REVERSE Button. 5. The red button STOPS the motor. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  AOUT + 12 0-20mA AOUT — Serial Link (RS485) The Analogue input circuit can be alternatively configured to provide an additional digital input (DIN4) as shown. DIN4 – 0V (Isolated) Figure 3-7 Inverter block diagram MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 37: Using The Micromaster 420

  4. USING THE MICROMASTER 420 International English Using the MICROMASTER 420 This Chapter contains: ♦ An explanation of the various methods of controlling your inverter Frequency Setpoint………………… 38 Command Sources (P0700) ………………38 OFF and braking Functions ………………39 Control Modes (P1300)………………..40 Faults and warnings………………..

• Page 38: Frequency Setpoint

  International English 4. USING THE MICROMASTER 420 Warnings ♦ When operating electrical devices, it is impossible to avoid applying hazardous voltages to certain parts of the equipment. ♦ Emergency Stop facilities according to EN 60204 IEC 204 (VDE 0113) must remain operative in all operating modes of the control equipment.

• Page 39: Off And Braking Functions

  4. USING THE MICROMASTER 420 International English Reversing the motor Standard Terminal 6 (DIN 2) Options see P0700 to P0704 OFF and braking Functions 4.3.1 OFF1 This command (produced by canceling the ON command) causes the inverter to come to a standstill at the selected ramp-down rate.

• Page 40: Control Modes (P1300)

  P1236 Control Modes (P1300) The various modes of operation of the MICROMASTER 420 control the relationship between the speed of the motor and the voltage supplied by the inverter. There are four modes of operation:…

• Page 41: System Parameters

  ♦ An in-depth description of what the parameter actually does Overview of MICROMASTER System Parameters ..Error! Bookmark not defined. Introduction to MICROMASTER System Parameters… Error! Bookmark not defined. System Parameters and Definitions ……Error! Bookmark not defined. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 42: Overview Of Micromaster System Parameters

  The MM420 is therefore delivered with the following default settings: ♦ Motor Parameters to suit a Siemens 4 pole motor to match the drive power and voltage. ♦ Setpoint control from the Analog input; 0 – 10V corresponding to 0 to 50 Hz or 0 to 60 Hz (North America).

• Page 43: Introduction To Micromaster System Parameters

  ♦ If an attempt is made to change a parameter that cannot be changed in this status, for example, cannot be changed whilst running or can only be changed in quick commissioning, then will be displayed. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

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  Reset to Factory default To reset all parameters to the factory default settings; the following parameters should be set as follows: 1. Set P0010=30. 2. Set P0970=1. Note The reset process takes approximately 10 seconds to complete. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  0340 Calculation of motor parameters 0350 Stator resistance, line-to-line 0611 Motor I t time constant 0614 Motor I t overload warning level 0640 Motor overload factor 1910 Select motor data identification 1912 Identified stator resistance MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  0010 Commissioning Parameter filter 0010 Commissioning Parameter filter 0918 Profibus address 0947 Last fault code 0927 Parameters changeable via 2110 Warning history 2000 Reference frequency 2197 CO/BO: Status word 1 monitor 2010 USS baud rate 2011 USS address MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  PI: tranducer type 2272 CO: PI scaled feedback signal 2273 CO: PI error 2280 PI: proportional gain 2285 PI: integral time 2291 PI: output upper limit 2292 PI: output lower limit 2294 CO: PI output MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 48: System Parameters And Definitions

  “User defined parameter list – see P0013 (Level 3) for details on use” “Standard”: allows access into most frequently used parameters “Extended”: allows extended access to inverter I/O functions “Expert”: for expert use only. “Service”: only for use by authorized service personnel –password protected. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

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  Quick Commissioning Factory setting Notes: This parameter must be reset to 0 before the inverter will run (Automatic when P3900 ≠ 0 (default)). The accessible parameters are also affected by the User Access Level parameter (P0003). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  P0040. P0040 Reset energy consumption meter Resets energy consumption display to zero. Possible Settings: 0 = No reset 1 = Reset r0039 to 0 Note: Reset occurs when “P” is pressed. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Inverter overload Notes: The individual status bits can be configured to the digital output using P0731. To enable the user to read the relevant parameter bits display, refer to the diagram below: > & » MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Actual frequency ≥ setpoint Bit 6 Voltage < threshold Bit 7 Voltage > threshold Bit 8 Bit 9 reserve PI frequency < threshold Bit A Bit b PI saturation Note: Refer to the bitmap diagram on page 51. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Rated drive power [kW] or [hp] Displays the nominal motor power rating, which can be supplied by the inverter. Note: The display will be in kW or hp dependent on the setting of P0100 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Υ Υ Υ Υ = = = = 440-480 95.75% == == == ==∆/Υ ∆/Υ ∆/Υ ∆/Υ= = = = 220-240/380-420 V 45kg P0344 11.1-11.3 A 19.7-20.6/11.4-11.9 A P0308 P0311 P0309 Note: This parameter can only be changed when P0010=1. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  This parameter is only visible when P0100 = 1, i.e. when the motor power is entered in hp. Note: A setting of 0 will cause the value to be calculated internally. P0310 Motor frequency rating [50] ‘ ’ Nominal motor frequency (Hz) from rating plate — see diagram P0304 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  The value entered in P0350 is the one from the method last used. P0611 Motor I t time constant 16000 [***] Defines motor thermal time constant and is automatically calculated from the motor data (P0340). Note: Larger number increases time taken for calculated motor temperature to change. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  29 External trip 33 Disable additional setpoint (defined in P1000) 99 Enable BICO parameterization – for expert use only Can only be reset via P0700 or P3900 = 1, 2 or factory setting P0970 = 1 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  29 External trip 33 Disable additional setpoint (defined in P1000) Enable BICO parameterization – for expert use only Can only be reset via P0700 or P3900 = 1, 2 or factory setting P0970 = 1. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Bit 01 «Digital input 2» 0 OFF 1 Active Bit 02 «Digital input 3» 0 OFF 1 Active Bit 03 «Digital input 4 (Via AIN)» 1 Active Note When the signal is active the segment is lit. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 60
  Controller output at lower limit (P2291) Closed Open Note These are the most common settings. Other settings are possible in Expert mode. r0752 Analog input voltage Displays the smohthed analog input value in volts before the characteristic block MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 61
  When monitoring is enabled and a deadband is defined (P0761), a fault condition will be generated (F0080) when the analog input voltage falls below 50% of the deadband voltage. Note: This function is disabled if the analog scaling block (see P0757 – P0760) is programmed to output negative setpoints. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Value X2 of analog input scaling Sets value of X2 as described in P0757 [10] ‘•’ P0760 Value Y2 of analog input scaling -99999 99999 Sets value of Y2 as described in P0757 [100] ‘•’ MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  P0758 = -100% P0761 = 0.1 (0.1V either side of center) P2000 = 50Hz Note: Fmin (P1080) should be zero when using center zero setup. There is no hysteresis at the end of the dead band MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Defines x2 of output characteristic P0780 Value Y2 of analog output characteristics [20] ‘•’ Defines y2 of output characteristic P0781 Analog output deadband ‘•’ Sets the width of a dead-band in mA for the analog output. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 65
  E.g. if you want to set value 15, you will need to set the display to indicate 15 in Binary (with the separating bars in-between “b — — n n” or if you wanted to set 11 – “b — — r n” etc. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Index 2 is only used if a 2 fault occurs before the 1 is acknowledged. P0970 Factory reset Resets all parameters to their default values. To do this, you need to set P0010=30, then P0970=1 P0100 is set according DIP Switch setting MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  The most common settings are: Keypad (Motor potentiometer) setpoint Analog input Fixed frequency setpoint USS via RS232 USS via RS485 terminals Optional Communication Board Other settings including an additional setpoint can be selected using the table above. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  P1002 Fixed frequency 2 -650 ‘ • ’ Defines fixed frequency setpoint 2 See description for P1001 P1003 Fixed frequency 3 -650 [10] ‘ • ’ Defines fixed frequency setpoint 3 See description for P1001 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 69
  Reverse direction is allowed – it is possible to change motor direction using the keypad (Motor potentiometer) setpoint (increase / decrease frequency either by using digital inputs or keypad up / down buttons) Reverse direction inhibited MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 70
  JOG ramp-up time [10] ‘•’ Sets ramp-up time. This is the time used while jogging or when the function “use jog ramp times” is activated. f (Hz) f max (P1082) time (s) Jog Ramp up time (P1060) MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 71
  3 x the nominal rating plate motor frequency. The maximum frequency can be exceeded if either of the following is active: Slip compensation (f slip comp max Flying restart slip nom MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
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  Notes Setting the ramp-down time too short can cause the inverter to trip (overvoltage (F0002) / overcurrent (F0001)). Changes to the ramp-up or ramp-down times are not active until confirmed by pressing the P key. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 73
  Defines smoothing time at end of ramp-up as shown in P1130. P1132 Ramp-down initial rounding time ‘•’ Defines smoothing time at start of ramp-down as shown in P1130. P1133 Ramp-down final rounding time ‘•’ Defines smoothing time at end of ramp-down as shown in P1130. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 74
  Defines continuous smoothing (default) or discontinuous smoothing as a response to OFF commands or setpoint reduction. The total smoothing time must be set > 0s; otherwise this parameter will have no effect. Possible settings: Continuous Discontinuous freq Continuous Discontinuous Stop Time MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 75
  Once this happens, the motor will run up to its setpoint using the normal ramp time. Note: Settings 1 to 3 search in both directions. In order to search only in direction of setpoint it is necessary to set 4 to 6. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 76
  The brake relay opens at Point 1 if enabled using P0731. The brake relay closes at Point 2. P1216 Holding brake release delay Defines the time at which the inverter runs at f before ramping up at point 1 (as shown in P1215 diagram). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 77
  Increasing the value will generally improve braking performance; however, if you set the value too high, an overvoltage trip may result. Possible settings: Compound braking disabled 1 – 250 Level of DC braking current defined as a % of motor rated current (P0305) MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 78
  Controls the relationship between the speed of the motor and the voltage supplied by the inverter. Possible values Linear V/f (default) FCC(Flux Current Control) – maintains motor flux current for improved efficiency Quadratic V/f – suitable for centrifugal fans/pumps Multi-point V/f (programmable – in Expert Mode only. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 79
  ♦ The achievable boost value is limited by the setting in P0640. ♦ Increasing the Boost Levels increases the heating of the motor especially at standstill. ♦ Σ Boosts < 300/I mot * R S MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 80
  ON command and is active until setpoint is reached for the 1 time. This is useful for starting loads with high inertia. V Max V Max V Nom (P0304) Normal V/f P1312 F Nom F Max (P0310) (P1082) MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 81
  4 kHz 6 kHz 8 kHz 10 kHz 12 kHz 14 kHz 16 kHz Power 0.37 0.55 0.75 10.2 10.2 13.2 13.2 13.2 13.2 18.4 18.4 13.2 13.2 26.0 26.0 17.9 17.9 13.5 13.5 10.4 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 82
  Identified stator resistance Displays measured stator resistance value (line-to-line) in Ohms (measured using P1910 = Ohms 1 or 2). P2000 Reference frequency [***] Full-scale frequency setting used by serial link, analog I/O. This corresponds to 4000H. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 83
  If a warning is active, the keypad will be flashing: the LED’s indicate warning status. If an AOP is in use, the display shows active Warning history and text. Indices 0 and 1are not stored. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 84
  P1 control can lead to instabilities. Note 4 In level 3, the PI controller source enable can also come from the digital inputs in settings 722.0 to 722.2 for DIN1 – DIN3 or any other BICO source. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 85
  Fixed PI setpoint 3 -130 [20] ‘•’ Refer to the description in P2201 for Fixed Setpoint 1. P2204 Fixed PI setpoint 4 -130 [30] ‘•’ Refer to the description in P2201 for Fixed Setpoint 1. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 86
  BOP or by setting P0702 or P0703 to 13 and 14. r2250 CO: Source of PI setpoint -130 Displays the active digital PI setpoint in %. [10.00] ‘•’ P2253 CI: PI setpoint 2248.0 ‘•’ MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 87
  The PI ramp time is only effective on the PI setpoint and only active when the PI setpoint is changed, or when a RUN command is given (when the PI uses this ramp to reach its value from 0%). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 88
  P756 – P760. Note 2 Refer to “Using BICO” description for further details of other settings. P2265 PI: feedback filter timeconst. ‘•’ Defines PI feedback filter time constant. r2266 CO: PI feedback Displays PI feedback signal MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 89
  If the P term is set to 0 the I term acts on the square of the error signal. P2285 PI: integral time ‘•’ Allows the User to set the PI controller integral time constant. Refer to P2280 above for detail. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 90
  Calculates a variety of motor parameters – overwriting previous values, including P0344 (motor weight), P0350 (Level 3) stator resistance), P0346 (Level 3, magnetization time) and P0347 ((Level 3 demagnetization time), P2000 (reference frequency), P2002 (reference current). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 91: Troubleshooting

  ♦ A list of the fault codes that may appear on the display of the BOP. The cause and recommended corrective action are indicated for each fault code listed. Troubleshooting with the Status Display Panel…………92 Troubleshooting with the Basic Operator Panel…………93 MICROMASTER 420 fault codes …………….94 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 92: Troubleshooting With The Status Display Panel

  6. TROUBLESHOOTING Warnings ♦ Repairs on equipment may only be carried out by Siemens Service, by repair centers authorized by Siemens or by qualified personnel who are thoroughly acquainted with all the warnings and operating procedures contained in this manual.

• Page 93: Troubleshooting With The Basic Operator Panel

  P to reset the inverter to the factory default parameter values. Now use a switch between terminals 5 and 8 on the control board. The drive should now run to the defined setpoint by analogue input. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 94: Micromaster 420 Fault Codes

  International English 6. TROUBLESHOOTING MICROMASTER 420 fault codes In the event of a failure, the inverter switches off and a fault code appears on the display. Table 6-2 MICROMASTER 420 Fault Codes Fault Code Description Possible Causes Diagnosis & Remedy…

• Page 95
  2 — Some of the control board tests have failed 4 — Some of the functional tests have failed 8 — Some of the IO module tests have failed. Vector only 16 — The Internal Ram has failed its check on power-up MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 96: Table 6-3 Micromaster 420 Warning Codes

  International English 6. TROUBLESHOOTING Table 6-3 MICROMASTER 420 Warning Codes Warning Description Possible Cause Diagnosis & Remedy Code A0501 Current Limit 1. Check whether the motor power corresponds to the inverter power. 2. Check that the cable length limits have not been exceeded.

• Page 97
  A0923 JOG right and JOG left JOG right and JOG left signals Make sure that JOG right and JOG signals active active together left signals are not applied simultaneously MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 98
  International English 6. TROUBLESHOOTING MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 99: Micromaster 420 Specifications

  7. MICROMASTER 420 SPECIFICATIONS International English MICROMASTER 420 Specifications Table 7-1 MICROMASTER 420 Specifications 230 V Single Phase MICROMASTER Inverters (with built in Class A Filter) Order No. (6SE6420-2AB) 11-2AA0 12-5AA0 13-7AA0 15-5AA0 17-5AA0 21-1BA0 21-5BA0 22-2BA0 23-0CA0 Input voltage range…

• Page 100
  International English 7. MICROMASTER 420 SPECIFICATIONS 230 V Three Phase MICROMASTER Inverters (unfiltered) Order No. (6SE6420-2UC) 24-0CA0 25-5CA0 Input voltage range 3AC 200V — 240V +10% -10% Motor output rating kW (hp) 4 (5) 5.5 (7.5) Output KVA Output current Max. A 17.5…

• Page 101: Table 7-2 Micromaster Performance Ratings

  7. MICROMASTER 420 SPECIFICATIONS International English Table 7-2 MICROMASTER Performance Ratings Feature Specification 200 to 240 V ± 10% 1AC Mains Operating Voltage 200 to 240 V ± 10% 3AC 380 to 480 V ± 10% 3AC 200 to 240 V ± 10% 1AC Power Ranges 0.12kW –…

• Page 102: Table 7-4 Micromaster 420 Fuses — Sizes And Types

  International English 7. MICROMASTER 420 SPECIFICATIONS Table 7-4 MICROMASTER 420 Fuses – Sizes and Types Inverter Power Inverter Voltage Inverter Filter Frame Inverter Order Standard (kW) Power (hp) Class Size Number (MLFB) Fuses 0.12 0.16 230 1ph Unfiltered FS A…

• Page 103: Supplementary Information

  8. SUPPLEMENTARY INFORMATION International English Supplementary Information This Chapter contains: Supplementary information. Available options …………Error! Bookmark not defined. Electro-Magnetic Compatibility (EMC) ……Error! Bookmark not defined. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 104: Available Options

  Available options The following accessories are available as options for your MICROMASTER MM420 Inverter. For more details please refer to the Reference Manual or contact your local Siemens sales office if you require assistance. • Additional RFI suppression filter •…

• Page 105: Table 8-1 Class 1 — General Industrial

  Radio Frequency Electromagnetic Field, ENV 50 140 80-1000 MHz, 10 V/m, 80% AM, amplitude modulated power and signal lines Radio-frequency Electromagnetic Field, ENV 50 204 900 MHz, 10 V/m 50% duty pulse modulated cycle, 200 Hz repetition rate MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 106: Table 8-3 Class 3 — Filtered For Residential, Commercial And Light Industry

  The MICROMASTER inverters are intended exclusively for professional applications. Therefore, they do not fall within the scope of the harmonics emissions specification EN 61000-3-2. • Maximum mains supply voltage when filters are fitted is 460V. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 107: Table 8-4 Compliance Table

  Frame size A units 400-480 V with external Class A footprint filters 6SE6400-2FA00-6AD0 Class 3 – Filtered for residential, commercial and light industry 6SE6420-2U***-**A0 with Unfiltered units fitted with external Class B footprint filters. 6SE6400-2FB0*-***0 * denotes any value is allowed. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 108
  International English 8. SUPPLEMENTARY INFORMATION MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 109: A — Changing The Operator Panel

  APPENDIX A International English A — Changing the Operator Panel MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 110
  International English APPENDIX A MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 111: B — Removing Covers Frame Size A

  APPENDIX B International English B — Removing Covers Frame Size A » MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 112
  International English APPENDIX B MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 113: C — Removing Covers Frame Sizes B And C

  APPENDIX C International English C — Removing Covers Frame Sizes B and C MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 114
  International English APPENDIX C » MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 115: D — Removing ‘Y’ Cap Frame Size A

  APPENDIX D International English D — Removing ‘Y’ Cap Frame Size A LK 700 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 116
  International English APPENDIX D MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 117: E — Removing ‘Y’ Cap Frame Sizes B And C

  APPENDIX E International English E — Removing ‘Y’ Cap Frame Sizes B and C LK700 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 118
  International English APPENDIX E MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 119: F — User Parameter Settings

  P2264 P0731 52:3 P1133 P2265 r0752 P1134 r2266 r0754 P1135 P2271 r0755 P1200 r2272 P0756 P1210 r2273 P0757 P1215 P2280 P0758 P1216 P2285 P0759 P1217 P2291 P0760 P1232 P2292 P0761 P1233 r2294 P0771 P1236 P3900 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 120
  International English APPENDIX F MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 121: G — Applicable Standards

  Product Standard for Power Drive Systems EN61800-3. Underwriters Laboratories UL and CUL LISTED POWER CONVERSION EQUIPMENT 5B33 for use in a pollution degree 2 ISO 9001 Siemens plc operates a quality management system, which complies with the requirements of ISO 9001. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 122
  International English APPENDIX G MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 123: H — List Of Abbreviations

  Fast Current Limitation IGBT Insulated Gate Bipolar Transistor Liquid Crystal Display Light Emitting Diode Proportional and Integral Programmable Logic Controller Positive Temperature Coefficient RCCB Residual Current Circuit breaker Residual Current Device Revolutions Per Minute Standard Display Panel MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 124
  International English APPENDIX H MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 125: Index

  BOP fitted · 40 Performance characteristics · 16 SDP fitted · 40 Power and motor connections · 22 Frame sizes single phase · 23 removing the Y Cap from frame size A · 115 Power and motor terminals MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 126
  & disposal · 9 warnings and faults states · 30 general · 7 System Parameters and Definitions · 48 operation · 9 repair · 9 transport & storage · 8 Water hazard · 19 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 127
  Date of Issue: A1 Should you come across any printing Company/Service Department errors when reading this publication, Address: please notify us on this sheet. Suggestions for improvement are also welcome. Telephone: __________ / Telefax: ________ / MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 128
  MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 129
  VIEW OF UNITS International English Frame Size A Frame Size B & C View of Unit Standard Display Panel fitted Power Terminal Connections Control Terminal Connections Access to “Y Cap“ MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 130
  Order Number *6SE6400-5AA00-0BP0* Drawing Number *G85139-K1790-U201-A2* A&D SD VM 4 © Siemens AG, 2000 Subject to change without prior notice Siemens Aktiengesellschaft Order No.: 6SE6400-5AA00-0BP0Operating Instructions Printed in UK. Date: October 2000…

Quick Links

MICROMASTER

Operating Instructions

Issue A2

User Documentation

• Page 1
  MICROMASTER Operating Instructions Issue A2 User Documentation…
• Page 3
  Overview Installation Commissioning MICROMASTER 420 Using the MICROMASTER 420 Operating Instructions System Parameters User Documentation Troubleshooting MICROMASTER 420 Specifications Supplementary Information Appendices Valid for Release Inverter Type Control Version MICROMASTER 420 October 2000 Index Issue: A2…
• Page 4
  We welcome suggestions for improvement. MICROMASTER® is a registered trademark of Siemens. Siemens handbooks are printed on chlorine-free paper that has been produced from managed sustainable forests. No solvents have been used in the printing or binding process.
• Page 5
  ♦ Getting Started Guide The Getting Started Guide is designed to give you quick access to all the basic information required to install and set up your MICROMASTER 420 for operation. ♦ Operating Instructions The Operating Instructions provide detailed information for installation and operation of your MICROMASTER 420.

• Page 6: Using The

  Siemens. Contact address Should any questions or problems arise while reading this manual, please contact the Siemens office concerned using the form provided at the back this manual. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 7: Micromaster

  Please read the information carefully, since it is provided for your personal safety and will also help prolong the service life of your MICROMASTER 420 Inverter and the equipment you connect to it. General Warnings ♦…

• Page 8
  The connection of power, motor and control cables to the inverter must be carried out as shown in Figure 2-4 on page 25, to prevent inductive and capacitive interference from affecting the correct functioning of the inverter. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 9
  EN 60204, 9.2.5.4) Repair Warnings ♦ Repairs on equipment may only be carried out by Siemens Service, by repair centers authorized by Siemens or by qualified personnel who are thoroughly acquainted with all the warnings and operating procedures contained in this manual.
• Page 10
  International English FOREWORD MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 11: Table Of Contents

  Ambient operating conditions ………………19 Mechanical Installation ………………..20 Electrical Installation ………………..21 Commissioning ………………….27 Front Panels for the MICROMASTER 420 …………..29 General operation ………………….. 34 Using the MICROMASTER 420 …………….37 Frequency Setpoint………………… 38 Command Sources (P0700) ………………38 OFF and braking Functions ………………

• Page 12
  D — Removing ‘Y’ Cap Frame Size A ………………115 E — Removing ‘Y’ Cap Frame Sizes B and C …………….117 F — User Parameter Settings …………………. 119 G — Applicable Standards ………………….121 H — List of Abbreviations………………….123 Index ……………………..125 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 13
  Motor and Power Connections ………………23 Figure 2-4 Wiring Guidelines to Minimize the Effects of EMI …………. 25 Figure 3-1 Panels available for the MICROMASTER 420 Inverter ………… 29 Figure 3-2 Basic operation with SDP………………..30 Figure 3-3 Buttons on the Basic Operator Panel…………….31 Figure 3-4 Changing parameters via the BOP………………
• Page 14
  MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 15: Overview

  OVERVIEW International English Overview This Chapter contains: A summary of the major features of the MICROMASTER 420 range. The MICROMASTER 420………………. 16 Features ……………………16 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 16: The Micromaster 420

  Comprehensive protective functions provide excellent inverter and motor protection. The MICROMASTER 420 with its default factory settings, is ideal for a large range of simple motor control applications. The MICROMASTER 420 can also be used for more advanced motor control applications via its comprehensive parameter lists.

• Page 17: Installation

  General data relating to installation ♦ Dimensions of Inverter ♦ Wiring guidelines to minimize the effects of EMI ♦ Details concerning electrical installation General……………………18 Ambient operating conditions ………………19 Mechanical Installation ………………..20 Electrical Installation ………………..21 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 18: General

  Apply 25% of input voltage for 2 hours Increase volts to 50% for a further 2 hours Increase volts to 75% for a further 2 hours Increase volts to 100% for a further 2 hours Inverter ready for run signal MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 19: Ambient Operating Conditions

  Overheating Mount the inverter vertically to ensure optimum cooling. Additional ventilation may be required for horizontal mounting. Ensure that the inverter’s air vents are not obstructed. Allow 100 mm clearance above and below the inverter. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 20: Mechanical Installation

  4 washers M5 204 mm 8.03″ 245 mm Tightening 9.65″ torque (unit to cabinet) with washers fitted: 3 Nm 174 mm 185 mm 195 mm 6.85″ 7.28″ 7.68″ Figure 2-1 Drill pattern for MICROMASTER 420 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 21: Electrical Installation

  A type B RCD is used. The trip limit of the RCD is 300mA. The neutral of the supply is grounded. Only one inverter is supplied from each RCD. The output cables are less than 50m (screened) or 100m (unscreened). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 22
  To tighten up the power terminal screws use a 4 — 5 mm cross-tip screwdriver. Access to the power and motor terminals The procedure for accessing the power and motor terminals on the MICROMASTER 420 Inverter is illustrated in Appendices B and C. Please also refer to the photographs showing the Power Terminal connections and the Control Terminal connections on the inside of the back cover of this manual.
• Page 23
  2. INSTALLATION International English N/L2 L/L1 (Ground) (Ground) Figure 2-2 MICROMASTER 420 Connection Terminals OPTIONAL FILTER (Class B only) CONTACTOR MICROMASTER MOTOR FUSE L/L1 N/L2 SINGLE PHASE TYPICAL INSTALLATION OPTIONAL FILTER CONTACTOR MICROMASTER MOTOR FUSE THREE PHASE Figure 2-3 Motor and Power Connections…
• Page 24
  ♦ Use screened or armored cables for the motor connections and ground the screen at both ends using the cable clamps Warning Safety regulations must not be compromised when installing inverters! MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 25
  Use suitable clips to fix motor and control cable screens securely to metal back plate Note To enhance the screening of the motor and control cables, the optional Gland Plate can be used (not shown in Figure 2-4). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 26
  International English 2. INSTALLATION MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 27: Commissioning

  Basic Operator Panel (BOP) ♦ An 8-step guide at the end of the Chapter, which provides a simple procedure for changing parameters Front Panels for the MICROMASTER 420 …………..29 General operation ………………….. 34 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 28
  Only qualified personnel may enter settings in the control panels. Particular attention must be paid to safety precautions and warnings at all times. The MICROMASTER 420 is supplied with a Status Display Panel (SDP) and default parameter settings that cover the following requirements: ♦…

• Page 29: Front Panels For The Micromaster 420

  Front Panels for the MICROMASTER 420 Front panels The front panels shown below are available for use with the MICROMASTER 420 Inverters. The panel on the left is supplied with the inverter as standard and is referred to as the Status Display Panel (SDP). The Basic Operator Panel (BOP) and Advanced Operator Panel (AOP) are available as options.

• Page 30: Table 3-2 Default Settings For Operation Using The Bop

  Commissioning with the Basic Operator Panel (BOP) The Basic Operator Panel (BOP), which is available as an option, provides access to the inverter parameters and enables you to customize the settings of your MICROMASTER 420. The BOP can be used to configure several MICROMASTER 420 150.00 Inverters.

• Page 31: Figure 3-3 Buttons On The Basic Operator Panel

  To change the Frequency Setpoint via the BOP set P1000 = 1. Pressing this button decreases the displayed value. Decrease value To change the Frequency Setpoint via the BOP set P1000 = 1. Figure 3-3 Buttons on the Basic Operator Panel MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 32: Figure 3-4 Changing Parameters Via The Bop

  Note — Busy Message In some cases — when changing parameter values — the display on the BOP shows » — — — -«. This means the inverter is busy with tasks of higher priority. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 33: Figure 3-5 Typical Motor Rating Plate Example

  Figure 3-6. 1 kΩ Figure 3-6 Motor Overload PTC Connection Note: To enable the trip function, set parameter P0701, P0702 or P0703 = 29. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 34: General Operation

  (P0005 = 21) the corresponding setpoint is displayed approximately every 1.0 seconds while the inverter is stopped. 3. The inverter is programmed at the factory for standard applications on Siemens four- pole standard motors that have the same power rating as the inverters. When using other motors it is necessary to enter the specifications from the motor’s rating plate.

• Page 35
  3. When the inverter reaches 50 Hz, press the ‘DOWN’ Button. Motor speed and display is decreased. 4. Change the direction of rotation with the FORWARD / REVERSE Button. 5. The red button STOPS the motor. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 36
  AOUT + 12 0-20mA AOUT — Serial Link (RS485) The Analogue input circuit can be alternatively configured to provide an additional digital input (DIN4) as shown. DIN4 – 0V (Isolated) Figure 3-7 Inverter block diagram MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 37: Using The Micromaster 420

  4. USING THE MICROMASTER 420 International English Using the MICROMASTER 420 This Chapter contains: ♦ An explanation of the various methods of controlling your inverter Frequency Setpoint………………… 38 Command Sources (P0700) ………………38 OFF and braking Functions ………………39 Control Modes (P1300)………………..40 Faults and warnings………………..

• Page 38: Frequency Setpoint

  International English 4. USING THE MICROMASTER 420 Warnings ♦ When operating electrical devices, it is impossible to avoid applying hazardous voltages to certain parts of the equipment. ♦ Emergency Stop facilities according to EN 60204 IEC 204 (VDE 0113) must remain operative in all operating modes of the control equipment.

• Page 39: Off And Braking Functions

  4. USING THE MICROMASTER 420 International English Reversing the motor Standard Terminal 6 (DIN 2) Options see P0700 to P0704 OFF and braking Functions 4.3.1 OFF1 This command (produced by canceling the ON command) causes the inverter to come to a standstill at the selected ramp-down rate.

• Page 40: Control Modes (P1300)

  P1236 Control Modes (P1300) The various modes of operation of the MICROMASTER 420 control the relationship between the speed of the motor and the voltage supplied by the inverter. There are four modes of operation:…

• Page 41: System Parameters

  ♦ An in-depth description of what the parameter actually does Overview of MICROMASTER System Parameters ..Error! Bookmark not defined. Introduction to MICROMASTER System Parameters… Error! Bookmark not defined. System Parameters and Definitions ……Error! Bookmark not defined. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 42: Overview Of Micromaster System Parameters

  The MM420 is therefore delivered with the following default settings: ♦ Motor Parameters to suit a Siemens 4 pole motor to match the drive power and voltage. ♦ Setpoint control from the Analog input; 0 – 10V corresponding to 0 to 50 Hz or 0 to 60 Hz (North America).

• Page 43: Introduction To Micromaster System Parameters

  ♦ If an attempt is made to change a parameter that cannot be changed in this status, for example, cannot be changed whilst running or can only be changed in quick commissioning, then will be displayed. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 44
  Reset to Factory default To reset all parameters to the factory default settings; the following parameters should be set as follows: 1. Set P0010=30. 2. Set P0970=1. Note The reset process takes approximately 10 seconds to complete. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 45
  0340 Calculation of motor parameters 0350 Stator resistance, line-to-line 0611 Motor I t time constant 0614 Motor I t overload warning level 0640 Motor overload factor 1910 Select motor data identification 1912 Identified stator resistance MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 46
  0010 Commissioning Parameter filter 0010 Commissioning Parameter filter 0918 Profibus address 0947 Last fault code 0927 Parameters changeable via 2110 Warning history 2000 Reference frequency 2197 CO/BO: Status word 1 monitor 2010 USS baud rate 2011 USS address MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 47
  PI: tranducer type 2272 CO: PI scaled feedback signal 2273 CO: PI error 2280 PI: proportional gain 2285 PI: integral time 2291 PI: output upper limit 2292 PI: output lower limit 2294 CO: PI output MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 48: System Parameters And Definitions

  “User defined parameter list – see P0013 (Level 3) for details on use” “Standard”: allows access into most frequently used parameters “Extended”: allows extended access to inverter I/O functions “Expert”: for expert use only. “Service”: only for use by authorized service personnel –password protected. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 49
  Quick Commissioning Factory setting Notes: This parameter must be reset to 0 before the inverter will run (Automatic when P3900 ≠ 0 (default)). The accessible parameters are also affected by the User Access Level parameter (P0003). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 50
  P0040. P0040 Reset energy consumption meter Resets energy consumption display to zero. Possible Settings: 0 = No reset 1 = Reset r0039 to 0 Note: Reset occurs when “P” is pressed. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 51
  Inverter overload Notes: The individual status bits can be configured to the digital output using P0731. To enable the user to read the relevant parameter bits display, refer to the diagram below: > & » MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 52
  Actual frequency ≥ setpoint Bit 6 Voltage < threshold Bit 7 Voltage > threshold Bit 8 Bit 9 reserve PI frequency < threshold Bit A Bit b PI saturation Note: Refer to the bitmap diagram on page 51. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 53
  Rated drive power [kW] or [hp] Displays the nominal motor power rating, which can be supplied by the inverter. Note: The display will be in kW or hp dependent on the setting of P0100 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 54
  Υ Υ Υ Υ = = = = 440-480 95.75% == == == ==∆/Υ ∆/Υ ∆/Υ ∆/Υ= = = = 220-240/380-420 V 45kg P0344 11.1-11.3 A 19.7-20.6/11.4-11.9 A P0308 P0311 P0309 Note: This parameter can only be changed when P0010=1. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 55
  This parameter is only visible when P0100 = 1, i.e. when the motor power is entered in hp. Note: A setting of 0 will cause the value to be calculated internally. P0310 Motor frequency rating [50] ‘ ’ Nominal motor frequency (Hz) from rating plate — see diagram P0304 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 56
  The value entered in P0350 is the one from the method last used. P0611 Motor I t time constant 16000 [***] Defines motor thermal time constant and is automatically calculated from the motor data (P0340). Note: Larger number increases time taken for calculated motor temperature to change. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 57
  29 External trip 33 Disable additional setpoint (defined in P1000) 99 Enable BICO parameterization – for expert use only Can only be reset via P0700 or P3900 = 1, 2 or factory setting P0970 = 1 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 58
  29 External trip 33 Disable additional setpoint (defined in P1000) Enable BICO parameterization – for expert use only Can only be reset via P0700 or P3900 = 1, 2 or factory setting P0970 = 1. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 59
  Bit 01 «Digital input 2» 0 OFF 1 Active Bit 02 «Digital input 3» 0 OFF 1 Active Bit 03 «Digital input 4 (Via AIN)» 1 Active Note When the signal is active the segment is lit. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 60
  Controller output at lower limit (P2291) Closed Open Note These are the most common settings. Other settings are possible in Expert mode. r0752 Analog input voltage Displays the smohthed analog input value in volts before the characteristic block MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 61
  When monitoring is enabled and a deadband is defined (P0761), a fault condition will be generated (F0080) when the analog input voltage falls below 50% of the deadband voltage. Note: This function is disabled if the analog scaling block (see P0757 – P0760) is programmed to output negative setpoints. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 62
  Value X2 of analog input scaling Sets value of X2 as described in P0757 [10] ‘•’ P0760 Value Y2 of analog input scaling -99999 99999 Sets value of Y2 as described in P0757 [100] ‘•’ MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 63
  P0758 = -100% P0761 = 0.1 (0.1V either side of center) P2000 = 50Hz Note: Fmin (P1080) should be zero when using center zero setup. There is no hysteresis at the end of the dead band MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 64
  Defines x2 of output characteristic P0780 Value Y2 of analog output characteristics [20] ‘•’ Defines y2 of output characteristic P0781 Analog output deadband ‘•’ Sets the width of a dead-band in mA for the analog output. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 65
  E.g. if you want to set value 15, you will need to set the display to indicate 15 in Binary (with the separating bars in-between “b — — n n” or if you wanted to set 11 – “b — — r n” etc. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 66
  Index 2 is only used if a 2 fault occurs before the 1 is acknowledged. P0970 Factory reset Resets all parameters to their default values. To do this, you need to set P0010=30, then P0970=1 P0100 is set according DIP Switch setting MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 67
  The most common settings are: Keypad (Motor potentiometer) setpoint Analog input Fixed frequency setpoint USS via RS232 USS via RS485 terminals Optional Communication Board Other settings including an additional setpoint can be selected using the table above. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 68
  P1002 Fixed frequency 2 -650 ‘ • ’ Defines fixed frequency setpoint 2 See description for P1001 P1003 Fixed frequency 3 -650 [10] ‘ • ’ Defines fixed frequency setpoint 3 See description for P1001 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 69
  Reverse direction is allowed – it is possible to change motor direction using the keypad (Motor potentiometer) setpoint (increase / decrease frequency either by using digital inputs or keypad up / down buttons) Reverse direction inhibited MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 70
  JOG ramp-up time [10] ‘•’ Sets ramp-up time. This is the time used while jogging or when the function “use jog ramp times” is activated. f (Hz) f max (P1082) time (s) Jog Ramp up time (P1060) MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 71
  3 x the nominal rating plate motor frequency. The maximum frequency can be exceeded if either of the following is active: Slip compensation (f slip comp max Flying restart slip nom MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 72
  Notes Setting the ramp-down time too short can cause the inverter to trip (overvoltage (F0002) / overcurrent (F0001)). Changes to the ramp-up or ramp-down times are not active until confirmed by pressing the P key. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 73
  Defines smoothing time at end of ramp-up as shown in P1130. P1132 Ramp-down initial rounding time ‘•’ Defines smoothing time at start of ramp-down as shown in P1130. P1133 Ramp-down final rounding time ‘•’ Defines smoothing time at end of ramp-down as shown in P1130. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 74
  Defines continuous smoothing (default) or discontinuous smoothing as a response to OFF commands or setpoint reduction. The total smoothing time must be set > 0s; otherwise this parameter will have no effect. Possible settings: Continuous Discontinuous freq Continuous Discontinuous Stop Time MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 75
  Once this happens, the motor will run up to its setpoint using the normal ramp time. Note: Settings 1 to 3 search in both directions. In order to search only in direction of setpoint it is necessary to set 4 to 6. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 76
  The brake relay opens at Point 1 if enabled using P0731. The brake relay closes at Point 2. P1216 Holding brake release delay Defines the time at which the inverter runs at f before ramping up at point 1 (as shown in P1215 diagram). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 77
  Increasing the value will generally improve braking performance; however, if you set the value too high, an overvoltage trip may result. Possible settings: Compound braking disabled 1 – 250 Level of DC braking current defined as a % of motor rated current (P0305) MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 78
  Controls the relationship between the speed of the motor and the voltage supplied by the inverter. Possible values Linear V/f (default) FCC(Flux Current Control) – maintains motor flux current for improved efficiency Quadratic V/f – suitable for centrifugal fans/pumps Multi-point V/f (programmable – in Expert Mode only. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 79
  ♦ The achievable boost value is limited by the setting in P0640. ♦ Increasing the Boost Levels increases the heating of the motor especially at standstill. ♦ Σ Boosts < 300/I mot * R S MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 80
  ON command and is active until setpoint is reached for the 1 time. This is useful for starting loads with high inertia. V Max V Max V Nom (P0304) Normal V/f P1312 F Nom F Max (P0310) (P1082) MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 81
  4 kHz 6 kHz 8 kHz 10 kHz 12 kHz 14 kHz 16 kHz Power 0.37 0.55 0.75 10.2 10.2 13.2 13.2 13.2 13.2 18.4 18.4 13.2 13.2 26.0 26.0 17.9 17.9 13.5 13.5 10.4 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 82
  Identified stator resistance Displays measured stator resistance value (line-to-line) in Ohms (measured using P1910 = Ohms 1 or 2). P2000 Reference frequency [***] Full-scale frequency setting used by serial link, analog I/O. This corresponds to 4000H. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 83
  If a warning is active, the keypad will be flashing: the LED’s indicate warning status. If an AOP is in use, the display shows active Warning history and text. Indices 0 and 1are not stored. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 84
  P1 control can lead to instabilities. Note 4 In level 3, the PI controller source enable can also come from the digital inputs in settings 722.0 to 722.2 for DIN1 – DIN3 or any other BICO source. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 85
  Fixed PI setpoint 3 -130 [20] ‘•’ Refer to the description in P2201 for Fixed Setpoint 1. P2204 Fixed PI setpoint 4 -130 [30] ‘•’ Refer to the description in P2201 for Fixed Setpoint 1. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 86
  BOP or by setting P0702 or P0703 to 13 and 14. r2250 CO: Source of PI setpoint -130 Displays the active digital PI setpoint in %. [10.00] ‘•’ P2253 CI: PI setpoint 2248.0 ‘•’ MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 87
  The PI ramp time is only effective on the PI setpoint and only active when the PI setpoint is changed, or when a RUN command is given (when the PI uses this ramp to reach its value from 0%). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 88
  P756 – P760. Note 2 Refer to “Using BICO” description for further details of other settings. P2265 PI: feedback filter timeconst. ‘•’ Defines PI feedback filter time constant. r2266 CO: PI feedback Displays PI feedback signal MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 89
  If the P term is set to 0 the I term acts on the square of the error signal. P2285 PI: integral time ‘•’ Allows the User to set the PI controller integral time constant. Refer to P2280 above for detail. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 90
  Calculates a variety of motor parameters – overwriting previous values, including P0344 (motor weight), P0350 (Level 3) stator resistance), P0346 (Level 3, magnetization time) and P0347 ((Level 3 demagnetization time), P2000 (reference frequency), P2002 (reference current). MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 91: Troubleshooting

  ♦ A list of the fault codes that may appear on the display of the BOP. The cause and recommended corrective action are indicated for each fault code listed. Troubleshooting with the Status Display Panel…………92 Troubleshooting with the Basic Operator Panel…………93 MICROMASTER 420 fault codes …………….94 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 92: Troubleshooting With The Status Display Panel

  6. TROUBLESHOOTING Warnings ♦ Repairs on equipment may only be carried out by Siemens Service, by repair centers authorized by Siemens or by qualified personnel who are thoroughly acquainted with all the warnings and operating procedures contained in this manual.

• Page 93: Troubleshooting With The Basic Operator Panel

  P to reset the inverter to the factory default parameter values. Now use a switch between terminals 5 and 8 on the control board. The drive should now run to the defined setpoint by analogue input. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 94: Micromaster 420 Fault Codes

  International English 6. TROUBLESHOOTING MICROMASTER 420 fault codes In the event of a failure, the inverter switches off and a fault code appears on the display. Table 6-2 MICROMASTER 420 Fault Codes Fault Code Description Possible Causes Diagnosis & Remedy…

• Page 95
  2 — Some of the control board tests have failed 4 — Some of the functional tests have failed 8 — Some of the IO module tests have failed. Vector only 16 — The Internal Ram has failed its check on power-up MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 96: Table 6-3 Micromaster 420 Warning Codes

  International English 6. TROUBLESHOOTING Table 6-3 MICROMASTER 420 Warning Codes Warning Description Possible Cause Diagnosis & Remedy Code A0501 Current Limit 1. Check whether the motor power corresponds to the inverter power. 2. Check that the cable length limits have not been exceeded.

• Page 97
  A0923 JOG right and JOG left JOG right and JOG left signals Make sure that JOG right and JOG signals active active together left signals are not applied simultaneously MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 98
  International English 6. TROUBLESHOOTING MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 99: Micromaster 420 Specifications

  7. MICROMASTER 420 SPECIFICATIONS International English MICROMASTER 420 Specifications Table 7-1 MICROMASTER 420 Specifications 230 V Single Phase MICROMASTER Inverters (with built in Class A Filter) Order No. (6SE6420-2AB) 11-2AA0 12-5AA0 13-7AA0 15-5AA0 17-5AA0 21-1BA0 21-5BA0 22-2BA0 23-0CA0 Input voltage range…

• Page 100
  International English 7. MICROMASTER 420 SPECIFICATIONS 230 V Three Phase MICROMASTER Inverters (unfiltered) Order No. (6SE6420-2UC) 24-0CA0 25-5CA0 Input voltage range 3AC 200V — 240V +10% -10% Motor output rating kW (hp) 4 (5) 5.5 (7.5) Output KVA Output current Max. A 17.5…

• Page 101: Table 7-2 Micromaster Performance Ratings

  7. MICROMASTER 420 SPECIFICATIONS International English Table 7-2 MICROMASTER Performance Ratings Feature Specification 200 to 240 V ± 10% 1AC Mains Operating Voltage 200 to 240 V ± 10% 3AC 380 to 480 V ± 10% 3AC 200 to 240 V ± 10% 1AC Power Ranges 0.12kW –…

• Page 102: Table 7-4 Micromaster 420 Fuses — Sizes And Types

  International English 7. MICROMASTER 420 SPECIFICATIONS Table 7-4 MICROMASTER 420 Fuses – Sizes and Types Inverter Power Inverter Voltage Inverter Filter Frame Inverter Order Standard (kW) Power (hp) Class Size Number (MLFB) Fuses 0.12 0.16 230 1ph Unfiltered FS A…

• Page 103: Supplementary Information

  8. SUPPLEMENTARY INFORMATION International English Supplementary Information This Chapter contains: Supplementary information. Available options …………Error! Bookmark not defined. Electro-Magnetic Compatibility (EMC) ……Error! Bookmark not defined. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 104: Available Options

  Available options The following accessories are available as options for your MICROMASTER MM420 Inverter. For more details please refer to the Reference Manual or contact your local Siemens sales office if you require assistance. • Additional RFI suppression filter •…

• Page 105: Table 8-1 Class 1 — General Industrial

  Radio Frequency Electromagnetic Field, ENV 50 140 80-1000 MHz, 10 V/m, 80% AM, amplitude modulated power and signal lines Radio-frequency Electromagnetic Field, ENV 50 204 900 MHz, 10 V/m 50% duty pulse modulated cycle, 200 Hz repetition rate MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 106: Table 8-3 Class 3 — Filtered For Residential, Commercial And Light Industry

  The MICROMASTER inverters are intended exclusively for professional applications. Therefore, they do not fall within the scope of the harmonics emissions specification EN 61000-3-2. • Maximum mains supply voltage when filters are fitted is 460V. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 107: Table 8-4 Compliance Table

  Frame size A units 400-480 V with external Class A footprint filters 6SE6400-2FA00-6AD0 Class 3 – Filtered for residential, commercial and light industry 6SE6420-2U***-**A0 with Unfiltered units fitted with external Class B footprint filters. 6SE6400-2FB0*-***0 * denotes any value is allowed. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 108
  International English 8. SUPPLEMENTARY INFORMATION MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 109: A — Changing The Operator Panel

  APPENDIX A International English A — Changing the Operator Panel MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 110
  International English APPENDIX A MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 111: B — Removing Covers Frame Size A

  APPENDIX B International English B — Removing Covers Frame Size A » MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 112
  International English APPENDIX B MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 113: C — Removing Covers Frame Sizes B And C

  APPENDIX C International English C — Removing Covers Frame Sizes B and C MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 114
  International English APPENDIX C » MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 115: D — Removing ‘Y’ Cap Frame Size A

  APPENDIX D International English D — Removing ‘Y’ Cap Frame Size A LK 700 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 116
  International English APPENDIX D MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 117: E — Removing ‘Y’ Cap Frame Sizes B And C

  APPENDIX E International English E — Removing ‘Y’ Cap Frame Sizes B and C LK700 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 118
  International English APPENDIX E MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 119: F — User Parameter Settings

  P2264 P0731 52:3 P1133 P2265 r0752 P1134 r2266 r0754 P1135 P2271 r0755 P1200 r2272 P0756 P1210 r2273 P0757 P1215 P2280 P0758 P1216 P2285 P0759 P1217 P2291 P0760 P1232 P2292 P0761 P1233 r2294 P0771 P1236 P3900 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 120
  International English APPENDIX F MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 121: G — Applicable Standards

  Product Standard for Power Drive Systems EN61800-3. Underwriters Laboratories UL and CUL LISTED POWER CONVERSION EQUIPMENT 5B33 for use in a pollution degree 2 ISO 9001 Siemens plc operates a quality management system, which complies with the requirements of ISO 9001. MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 122
  International English APPENDIX G MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 123: H — List Of Abbreviations

  Fast Current Limitation IGBT Insulated Gate Bipolar Transistor Liquid Crystal Display Light Emitting Diode Proportional and Integral Programmable Logic Controller Positive Temperature Coefficient RCCB Residual Current Circuit breaker Residual Current Device Revolutions Per Minute Standard Display Panel MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 124
  International English APPENDIX H MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 125: Index

  BOP fitted · 40 Performance characteristics · 16 SDP fitted · 40 Power and motor connections · 22 Frame sizes single phase · 23 removing the Y Cap from frame size A · 115 Power and motor terminals MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…

• Page 126
  & disposal · 9 warnings and faults states · 30 general · 7 System Parameters and Definitions · 48 operation · 9 repair · 9 transport & storage · 8 Water hazard · 19 MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 127
  Date of Issue: A1 Should you come across any printing Company/Service Department errors when reading this publication, Address: please notify us on this sheet. Suggestions for improvement are also welcome. Telephone: __________ / Telefax: ________ / MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 128
  MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 129
  VIEW OF UNITS International English Frame Size A Frame Size B & C View of Unit Standard Display Panel fitted Power Terminal Connections Control Terminal Connections Access to “Y Cap“ MICROMASTER 420 Operating Instructions 6SE6400-5AA00-0BP0…
• Page 130
  Order Number *6SE6400-5AA00-0BP0* Drawing Number *G85139-K1790-U201-A2* A&D SD VM 4 © Siemens AG, 2000 Subject to change without prior notice Siemens Aktiengesellschaft Order No.: 6SE6400-5AA00-0BP0Operating Instructions Printed in UK. Date: October 2000…

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