List of Faults and Alarms
Faults and Alarms
3-625
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
F07925
Drive: Torque/speed out of tolerance
Reaction:
OFF1 (NONE, OFF2, OFF3)
Acknowledge:
IMMEDIATELY
Cause:
For p2193 = 1:
The torque deviates from the torque/speed envelope characteristic.
For p2193 = 2:
The speed signal from the external encoder (refer to p3230) deviates from the speed (r2169).
Remedy:
Check the connection between the motor and load.
Adapt the parameterization according to the load.
A07926
Drive: Envelope curve, parameter invalid
Reaction:
NONE
Acknowledge:
NONE
Cause:
Invalid parameter values were entered for the envelope characteristic of the load monitoring.
The following rules apply for the speed thresholds:
p2182 < p2183 < p2184
The following rules apply for the torque thresholds:
p2185 > p2186
p2187 > p2188
p2189 > p2190
Alarm value (r2124, interpret decimal):
Number of the parameter with the invalid value.
Remedy:
Set the parameters for the load monitoring according to the applicable rules or deactivate load monitoring (p2181 =
0; p2193 = 0).
A07927
DC brake active
Reaction:
NONE
Acknowledge:
NONE
Cause:
The motor is braked with a DC current, the DC current brake is active.
1)
An alarm with response DCBRAKE is active. The motor is braked with the braking current set in p1232 for the dura-
tion set in in p1233. If the standstill threshold p1226 is undershot, then braking is prematurely canceled.
2)
DC braking has been activated at binector input p1230 with the DC brake set (p1230 = 4). Braking current p1232 is
injected until this binector input becomes inactive.
Remedy:
None necessary.
A07929 (F)
Drive: No motor detected
Reaction:
NONE
Acknowledge:
NONE
Cause:
The absolute current value is so small after enabling the inverter pulses that no motor is detected.
See also: p2179 (Output load identification current limit)
Remedy:
- check the motor feeder cables.
- reduce the threshold value (p2179) (e.g. for synchronous motors).
- check the voltage boost of the V/f control (p1310).
- carry out a standstill measurement to set the stator resistance (p0350).
F07936
Drive: load failure
Reaction:
OFF1 (NONE, OFF2, OFF3)
Acknowledge:
IMMEDIATELY
Cause:
Load monitoring: load failure detected.
Remedy:
Check the sensor.
Switch out the monitoring (p2193).
See also: p2193 (Load monitoring configuration), p3232 (Load monitoring failure detection)
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