Faults and Alarms
List of faults and alarms
3-1584
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
A07932 Brake does not close
Drive object: SERVO, VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: This alarm is output for r1229.5 = 1.
For r1229.5 = 1, OFF/OFF3 are suppressed to prevent the drive accelerating by a load that drives the motor -
whereby OFF2 remains effective.
See also: p1217 (Motor holding brake closing time), r1229 (Motor holding brake status word)
Remedy: - check the functionality of the motor holding brake.
- check the feedback signal (p1222).
F07935 (N) Drv: Motor holding brake detected
Drive object: SERVO, VECTOR
Reaction: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: A motor with integrated motor holding brake was detected where the brake control has not been configured (p1215
= 0). The brake control configuration was then set to "motor holding brake the same as sequence control" (p1215 =
1).
Remedy: None necessary.
See also: p1215 (Motor holding brake configuration)
Reaction upon N: NONE
Acknowl. upon N: NONE
F07940 Sync-line-drive: Synchronization error
Drive object: VECTOR
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: After synchronization has been completed, the phase difference (r3808) is greater than the threshold value, phase
synchronism (p3813).
OFF1 or OFF3 response, while the closed-loop phase control is active (r3819.6 = 1) or synchronism reached
(r3819.2 = 1).
Enable signal withdrawn (p3802 = 0), while the closed-loop phase control was active (r3819.6 = 1).
Remedy: If required increase the threshold value phase synchronism (p3813) for synchronizing the line supply to the drive.
Before OFF1 or OFF3, complete synchronizing (r03819.0 = 0).
Before withdrawing the enable signal (p3802 = 0), reach synchronism (r3819.2 = 1).
See also: p3813 (Sync-line-drive phase synchronism threshold value)
A07941 Sync-line-drive: Target frequency not permissible
Drive object: VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: The target frequency is outside the permissible value range.
Alarm value (r2124, interpret decimal):
1084: Target frequency greater than the positive speed limit, f_sync > f_max (r1084).
1087: Target frequency less than the negative speed limit, f_sync < f_min (r1087).
Remedy: Fulfill the conditions for the target frequency for line-drive synchronization.
See also: r1084 (Speed limit positive effective), r1087 (Speed limit negative effective)
A07942 Sync-line-drive: Setpoint frequency is completely different than the target frequency
Drive object: VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: There is a considerable difference between the setpoint frequency and the target frequency (f_set <> f_target). The
deviation that can be tolerated is set in p3806.
Remedy: The alarm automatically disappears after the difference that can be tolerated between the setpoint and target fre-
quencies (p3806) is reached.
See also: p3806 (Sync-line-drive frequency difference threshold value)
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