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MICROMASTER 420
0.12 kW - 11 kW
Compact Operating Manual
Issue 04/04
User Documentation

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   Summary of Contents for Siemens MICROMASTER 420

  • Page 1 MICROMASTER 420 0.12 kW - 11 kW Compact Operating Manual Issue 04/04 User Documentation...
  • Page 2 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. WARNING This equipment contains dangerous voltages and controls potentially dangerous rotating mechanical parts.
  • Page 3: Table Of Contents

    50/60 Hz DIP switch....................8 Communications..................... 9 Establishing communications MICROMASTER 420 ⇔ STARTER......9 Establishing communications between the MICROMASTER 420 ⇔ AOP ....9 Bus interface (CB)....................10 BOP / AOP (Option) ....................11 Buttons and their Functions ..................11 Changing parameters using as an example P0003 "Access level"......
  • Page 4: Installation

    Mounting dimensions Frame Drilling Dimensions Tightening Torque Size Bolts Nm (ibf.in) mm (Inch) mm (Inch) 160 (6.30) – 2xM4 2.5 (22.12) 174 (6.85) 138 (5.43) 4xM4 204 (8.03) 174 (6.85) 4xM4 Fig. 1-2 Mounting dimensions MICROMASTER 420 Compact Operating Manual...
  • Page 5: Electrical Installation

    17-9 15-9 13-7 11-7 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-6.0 1.0-6.0 1.0-6.0 1.5-10 2.5-10 4.0-10 Output Cable 17-13 17-13 17-13 17-13 17-13 17-9 17-9 17-9 15-7 13-7 11-7 2.25 Tightening Torque (lbf.in) (10) (13.3) (20) MICROMASTER 420 Compact Operating Manual...
  • Page 6: Power Terminals

    Isolated output +24 V / max. 100 mA Isolated output 0 V / max. 100 mA RL1-B Digital output / NO contact RL1-C Digital output / Changeover contact DAC+ Analog output (+) DAC- Analog output (-) RS485 port RS485 port MICROMASTER 420 Compact Operating Manual...
  • Page 7: Block Diagram

    60 Hz used 50 Hz COM link RS485 The analog input circuit can be DIP switch alternatively configured to provide an additional digital U,V,W input (DIN4): automatic Option DIN4 24 V Fig. 2-3 Inverter block diagram MICROMASTER 420 Compact Operating Manual...
  • Page 8: Factory Setting

    Issue 04/04 Factory setting The MICROMASTER 420 frequency inverter is set in the factory so that it can be operated without any additional parameterization. To do this, the motor parameters set in the factory (P0304, P0305, P0307, P0310), that correspond to a 4-pole 1LA7 Siemens motor, must match the rated data of the connected motor (refer to the rating plate).
  • Page 9: Communications

    STARTER and MICROMASTER 420: PC <-> frequency inverter connecting set BOP if the USS standard values (refer to Section 6.2.1 "Serial Interface (USS)") are changed in the MICROMASTER 420 frequency inverter PC <-> frequency inverter MICROMASTER 420 connecting set USS settings, refer to Section 6.2.1 "Serial...
  • Page 10: Bus Interface (cb)

    Only for special cases P2041[2] Baud rate 0: 125 kbaud Mapping CANopen <--> MM4 1: 250 kbaud 2: 500 kbaud P2041[3] Diagnostics Mapping CANopen <--> MM4 P2041[4] - response to communication errors - baud rate MICROMASTER 420 Compact Operating Manual...
  • Page 11: Bop / Aop (option)

    Pressing this button allows access to the parameters. parameters Increase Pressing this button increases the displayed value. value Decrease Pressing this button decreases the displayed value. value AOP menu Calls the AOP menu prompting (this is only available for AOP). MICROMASTER 420 Compact Operating Manual...
  • Page 12: Changing Parameters Using As An Example P0003 "access Level

    4 Press to the required value (example: 3) 5 Press to confirm and store the value 6 Now access level 3 is set and all level 1 to level 3 parameters are visible to the user. MICROMASTER 420 Compact Operating Manual...
  • Page 13: Commissioning

    The frequency inverter is adapted to the motor using the quick commissioning function and important technological parameters are set. The quick commissioning shouldn't be carried-out if the rated motor data saved in the frequency inverter (4-pole 1LA Siemens motor, star circuit configuration frequency inverter (FU)- specific) match the rating plate data.
  • Page 14 Time taken for motor to decelerate from maximum motor frequency (P1082) down to standstill when no rounding is used 5.00 s OFF3 ramp-down time P1135 =... (enters the fast stop ramp-down time in s) Defines ramp-down time from maximum frequency to standstill for OFF3 command. MICROMASTER 420 Compact Operating Manual...
  • Page 15: Commissioning The Application

    19200 baud Defines the number of 16-bit words in PZD part of USS telegram. 38400 baud 57600 baud USS PKW length P2013 =... Defines the number of 16-bit words in PKW part of USS telegram. MICROMASTER 420 Compact Operating Manual...
  • Page 16: Selection Of Command Source

    12.3 ms debounce time DIN channel Kl.8 P24 Function of DIN 1 Debounce time: DIN 0 ... 99 0 ... 3 P0701 (1) Kl.9 0 V P0724 (3) 24 V & r0722 r0722 CO/BO: Bin.inp.val MICROMASTER 420 Compact Operating Manual...
  • Page 17: Digital Output (dout)

    Fixed frequency USS on BOP link USS on COM link CB on COM link Sequence control P1000 = Additonal setpoint Setpoint Motor BOP link channel control P1000 = 1 Main COM link setpoint COM link MICROMASTER 420 Compact Operating Manual...
  • Page 18: Analog Input (adc)

    P0780 =... Width of DAC deadband P0781 =... Sets width of deadband in [mA] P0777 P0779 100 % for analog output. DAC channel r0774 P0781 P0773 Function r0xxx P0771 dead scaling zone P0771 = xxx MICROMASTER 420 Compact Operating Manual...
  • Page 19: Motor Potentiometer (mop)

    For settings 2 and 3, all parameters P1016 to Fixed frequency code – P1017 =... P1019 must be set to the selected value so that Bit 1 the drive inverter accepts the ON command. Fixed frequency code – P1018 =... Bit 2 MICROMASTER 420 Compact Operating Manual...
  • Page 20: Jog

    Ramp-down final rounding time P1133 =... (entered in s) Rounding type P1134 =... Continuous smoothing Discontinuous smoothing 5.00 s OFF3 ramp-down time P1135 =... Defines ramp-down time from maximum frequency to standstill for OFF3 command. MICROMASTER 420 Compact Operating Manual...
  • Page 21: Reference/limit Frequencies

    Contrary to parameter P1312, that is only active for the 1 acceleration operation after the ON command, P1311 is effective each time that the drive accelerates or brakes. MICROMASTER 420 Compact Operating Manual...
  • Page 22: Inverter/motor Protection

    P0611 is estimated according to the motor data during quick commissioning or is calculated using P0340 (Calculating of the motor parameters). When the calculation of motor parameters during quick commission is complete the stored value can be replaced by the value given by the motor manufacturer MICROMASTER 420 Compact Operating Manual...
  • Page 23: Inverter-specific Functions

    Configures automatic restart function. Disabled Trip reset after power on Restart after mains blackout Restart after mains brownout or fault Restart after mains brownout Restart after mains blackout and fault Restart after mains brown/blackout or fault MICROMASTER 420 Compact Operating Manual...
  • Page 24 Enables / disables Vdc controller. r1242 Vdc controller disabled Vdc-max controller enabled Auto detect Vdc switch-on levels P1254 =... Enables/disables auto-detection of switch-on -controller active DC_max A0911 levels for Vdc control functionalities. Disabled r0056 Bit14 Enabled f MICROMASTER 420 Compact Operating Manual...
  • Page 25 PID proportional gain P2280 Determined by optimizing P2285 PID integral time P2285 Determined by optimizing P2291 PID output upper limit P2291 Adapt to the application P2292 PID output lower limit P2292 Adapt to the application MICROMASTER 420 Compact Operating Manual...
  • Page 26: Series Commissioning

    6 Commissioning Issue 04/04 Series commissioning An existing parameter set can be transferred to a MICROMASTER 420 frequency inverter using STARTER or DriveMonitor (refer to Section 4.1 "Establishing communications MICROMASTER 420 ⇔ STARTER"). Typical applications for series commissioning include: 1. If several drives are to be commissioned that have the same configuration and same functions.
  • Page 27: Displays And Messages

    PI Feedback below minimum value A0921 DAC parameters not set properly F0222 PI Feedback above maximum value A0922 No load applied to inverter BIST Tests Failure Both JOG Left and JOG Right are F0450 A0923 (Service mode only) requested MICROMASTER 420 Compact Operating Manual...
  • Page 28: Micromaster 420 Compact Operating Manual

    MICROMASTER 420 Compact Operating Manual Information about MICROMASTER 420 is also available from: Regional Contacts Please get in touch with your contact for Technical Support in your Region for questions about services, prices and conditions of Technical Support. Central Technical Support The competent consulting service for technical issues with a broad range of requirements- based services around our products and systems.

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