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3 faults and alarms, 1 fault messages – Siemens MICROMASTER 411 User Manual

Page 81

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Issue 03/01

6 Troubleshooting

MICROMASTER 411 & COMBIMASTER 411 Operating Instructions

6SE6400-5CA00-0BP0

81

6.3 Faults

and

Alarms

6.3.1

Fault messages

In the event of a failure, the inverter switches off and a fault code appears on the
display.

NOTE
To reset the fault code, one of three methods listed below can be used:
Method 1: Cycle the power to the drive

Method 2: Press the

button on the BOP or AOP

Method 3: Via Digital Input 3 (Default Setting)


Fault messages are stored in parameter r0947 under their code number (e.g.
F0003 = 3). The associated error value is found in parameter r0949. The value 0 is
entered if a fault has no error value. It is furthermore possible to read out the point
in time that a fault occurred (r0948) and the number of fault messages (P0952)
stored in Parameter r0947.

F0001 OverCurrent

OFF2

Possible Causes

Motor power (P0307) does not correspond to the inverter power (r0206)

Motor leads are too long

Motor lead short circuit

Earth faults

Diagnose & Remedy

Check the following:

Motor power (P0307) must correspond to inverter power (r0206)

Cable length limits must not be exceeded

Motor cable and motor must have no short-circuits or earth faults

Motor parameters must match the motor in use

Value of stator resistance (P0350) must be correct

Motor must not be obstructed or overloaded

Increase the ramp time

Reduce the boost level (V/f control: P1311 & P1312, Vector control: P1610 & P1611)

F0002 OverVoltage

OFF2

Possible Causes

DC-link controller disabled (P1240 = 0)

DC-link voltage (r0026) exceeds trip level (P2172)

Overvoltage can be caused either by too high main supply voltage or if motor is in regenerative
mode. Regenerative mode can be caused by fast ramp downs or if the motor is driven from an
active load.

Diagnose & Remedy

Check the following:

Supply voltage (P0210) must lie within limits indicated on rating plate

DC-link voltage controller must be enabled (P1240) and parameterized properly

Ramp-down time (P1121) must match inertia of load

Required braking power must lie within specified limits

NOTE
Higher inertia requires longer ramp times; otherwise, apply braking resistor.

F0003 UnderVoltage

OFF2

Possible Causes

Main supply failed