Siemens SINAMICS S110 List Manual page 1112

Faults and alarms
List of faults and alarms
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 de-activate load monitoring (p2181 =
0, p2193 = 0).
A07927 DC braking active
Message value: -
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
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.
F07928 Internal voltage protection initiated
Message value: -
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The Motor Module signals that the motor is short-circuited through the power semiconductors (r1239.5 = 1). The
pulses cannot be enabled. The internal voltage protection is selected (p1231 = 3).
Remedy: If the Motor Module supports the autonomous internal voltage protection (r0192.10 = 1), then the Motor Module auto-
matically decides - using the DC link voltage - as to whether the armature short-circuit should be activated.
The armature short-circuit is activated and response OFF2 is initiated if the DC link voltage exceeds 800 V. If the DC
link voltage falls below 450 V, then the armature short-circuit is withdrawn.
If the motor is still in a critical speed range, the armature short-circuit is re-activated once the DC link voltage exceeds
the threshold of 800 V.
If the autonomous (independent) internal voltage protection is active (r1239.5 = 1) and the line supply returns (450
V < DC link voltage < 800 V), the armature short-circuit is withdrawn after 3 minutes.
F07930 Drive: Brake control error
Message value: %1
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
Reaction: OFF1 (NONE, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The Control Unit has detected a brake control error.
Fault value (r0949, decimal interpretation):
10, 11: Fault in "open holding brake" operation.
- No brake connected or wire breakage (check whether brake releases for p1278 = 1).
- Ground fault in brake cable.
20: Fault in "brake open" state.
- Short-circuit in brake winding.
30, 31: Fault in "close holding brake" operation.
- No brake connected or wire breakage (check whether brake releases for p1278 = 1).
- Short-circuit in brake winding.
40: Fault in "brake closed" state.
50: Fault in the brake control circuit of the Control Unit or communication fault between Control Unit and Motor Mod-
ule (brake control diagnostics).
80: When using the Safe Brake Adaptor (SBA), a fault has occurred in the brake control of the Control Unit.
3-1112
© Siemens AG 2012 All Rights Reserved
SINAMICS S110 List Manual (LH7), 06/2012, 6SL3097-4AP10-0BP3