Troubleshooting With The Basic Operator Panel - Siemens Micromaster 420 Operating Instruction

6. TROUBLESHOOTING
6.2

Troubleshooting with the Basic Operator Panel

If the display shows a fault or warning code, please refer to Section 6.3 and the following
MM420 Fault Codes.
If the motor fails to start when the ON command has been given:
•
Check that P0010 = 0.
•
Check that a valid ON signal is present.
•
Check that P0700 = 2 (for digital input control) or
•
Check that the setpoint is present (0 to 10V on Terminal 3) or the setpoint has been
entered into the correct parameter, depending upon the setpoint source (P1000). See
Section 5.3 Error! Bookmark not defined..
If the motor fails to run after changing the parameters, set P0010 = 30 then P0970 = 1
and press 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
P0700 = 1 (for BOP control).
International English
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