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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
Load monitoring configuration and response must match.
It is not permissible that the individual load torque monitoring areas overlap.
Alarm value (r2124, interpret decimal):
Number of the parameter with the invalid value.
The load torque monitoring has not been activated as long as the alarm is active.
Remedy:
- set the parameters for the load monitoring according to the applicable rules.
- if necessary, deactivate the load monitoring (p2181 = 0, p2193 = 0).
A07927
DC braking active
Reaction:
NONE
Acknowledge:
NONE
Cause:
The motor is braked with DC current. DC braking is active.
1)
A message with response DCBRK is active. The motor is braked with the braking current set in p1232 for the duration 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 braking set (p1230 = 4). Braking current p1232 is
injected until this binector input becomes inactive.
Remedy:
Not necessary.
The alarm automatically disappears once DC braking has been executed.
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.
Note:
- in the case of vector control and an induction motor, this alarm is followed by fault F07902.
- PM330: Correction currents are calculated and displayed in the optimized pulse pattern range.
See also: p2179 (Output load identification current limit)
Remedy:
- check the motor feeder cables.
- reduce the threshold value (p2179), e.g. for synchronous motors.
- increase threshold value (PM330).
- check the voltage boost of the U/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:
The load monitoring has detected a load failure.
Remedy:
- check the sensor.
- if necessary, deactivate the load monitoring (p2193).
See also: p2193 (Load monitoring configuration), p3232 (Load monitoring failure detection)
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Warnings, faults and system messages
9.6 List of fault codes and alarm codes
797
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