Siemens G130 - F07928 Internal voltage protection initiated; F07930 Drive: Brake control error

SINAMICS G130/G150
List Manual (LH2), 07/2016, A5E03263479A
1613
4 Faults and alarms
4.2 List of faults and alarms
F07928 Internal voltage protection initiated
Message value: -
Message class: Application/technological function faulted (17)
Drive object: VECTOR_G
Component: Power Module Propagation: GLOBAL
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
automatically 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link voltage falls below 450 V, then the armature short-circuit is withdrawn.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 800 V), the armature short-circuit is withdrawn after 3 minutes.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
Message class: Application/technological function faulted (17)
Drive object: VECTOR_G
Component: Motor Propagation: GLOBAL
Reaction: OFF1 (NONE, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The Control Unit has detected a brake control error.
- motor cable is not shielded correctly.
- defect in control circuit of the Motor Module.
Fault value (r0949, interpret decimal):
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.
- S120M: brake opened via terminal X4.1 for mounting purposes (this is only permissible when the power supply
voltage is switched off).
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 the Control Unit and Motor
Module (brake control).
80:
When using the Safe Brake Adapter (SBA), a fault has occurred in the brake control of the Control Unit.
See also: p1278 (Brake control diagnostics evaluation)
Remedy: - check the motor holding brake connection.
- for a parallel connection, check the setting of the power unit data set to control the holding brake (p7015).
- check the function of the motor holding brake.
- check whether there is a DRIVE-CLiQ communication error between the Control Unit and the Motor Module
involved and, if required, carry out a diagnostics routine for the faults identified.