Issue 01/06  Faults and Alarms 
MICROMASTER 440    Parameter List 
6SE6400-5BB00-0BP0 
307 
5 Faults and Alarms 
5.1 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: 
1.  Cycle the power to the drive. 
2.  Press the 
 
 button on the BOP or AOP. 
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  STOP II 
Quit 
Remove fault and reset fault memory by disconnecting the 
-  drive converter from the line supply and powering-up again 
-  Press the Fn key on the BOP or AOP 
-  Acknowledge fault P2103, P2104 
-  P0952 (complete fault memory) 
Cause 
-  short-circuit at the output 
- ground fault 
-  excessively large motor (the motor power rating P0307 is greater than the inverter power r0206) 
-  defective final stage (end stage) 
Diagnosis & Remedy 
Please check the following: 
-  are the cable lengths within the limit values ? 
-  does the motor cable or motor have either a short-circuit or ground fault ? 
-  do the motor parameters correspond to those of the motor being used ? 
-  is the motor overloaded or stalled (locked rotor) ? 
-  increase the accelerating time. 
-  reduce the gain 
-  use a motor with a lower power rating 
-  is the stator resistance value (P0350) correct ? 
F0002 Overvoltage  STOP II 
Quit 
Refer to F0001 
Cause 
-  DC link voltage (r0026) higher than the overvoltage threshold (refer to parameter r0026) 
- ground fault 
Diagnosis & Remedy 
Please check the following: 
-  is the line supply voltage within the permissible range? 
-  has the DC current DC link monitoring been enabled (P1240) and correctly parameterized? 
-  extend the deceleration ramp (ramp-down time P1121, P1135) 
-  remove the ground fault 
-  is the required braking power within the permissible limits? 
NOTE 
-  a higher moment of inertia requires longer deceleration times; if required, use a braking resistor. 
-  overvoltage can either be caused by an excessively high line supply voltage or by the fact that the motor 
is generating (regenerative mode). 
-  the motor can be generating as it is decelerating quickly or due to the fact that an active load is driving 
the motor.