Overview of Alarms
207930
<location>Drive: Brake control defective
Reaction:
OFF1 (NONE, OFF2, OFF3)
Acknowledge:
IMMEDIATELY
Cause:
The control unit has detected a brake control fault.
- no motor holding brake connected.
- the motor holding brake control on the motor module is faulty.
- a DRIVE-CLiQ communications error has occurred between the control unit and the
motor module involved.
Fault value (r0949, decimal):
10: No brake connected or fault in the motor module brake control circuit ("open brake"
operation).
11: Defect in the brake control circuit of the motor module ("brake open" operation).
20: Short-circuit in the brake winding or fault in the brake control circuit of the motor module
("brake open" state).
30: No brake connected, short-circuit in the brake winding or fault in the motor module
brake control circuit ("close brake" operation).
31: Defect in the brake control circuit of the motor module ("close brake" operation).
40: Defect in the brake control circuit of the motor module ("brake closed" state).
50: Defect in the brake control circuit of the motor module or communications fault between
the control unit and the motor module (brake control diagnostics).
Remedy:
- check the motor holding brake connection.
- check the function of the motor holding brake.
- check whether there is a DRIVE-CLiQ communications error between the control unit and
the motor module involved and if required, carry-out a diagnostics routine for the faults
identified.
- check the electrical cabinet design and cable routing for EMC compliance
- replace the motor module involved.
207931
<location>Brake does not open
Reaction:
NONE
Acknowledge:
NONE
Cause:
This alarm is output for r1229.4 = 1.
See also: p1216, r1229
Remedy:
- check the functionality of the motor holding brake.
- check the feedback signal (p1223).
207932
<location>Brake does not close
Reaction:
NONE
Acknowledge:
NONE
Cause:
This alarm is output for r1229.5 = 1.
See also: p1217, r1229
Remedy:
- check the functionality of the motor holding brake.
- check the feedback signal (p1222).
207950
<location>Drive: Motor parameter defective
Reaction:
NONE
Acknowledge:
IMMEDIATELY
2-706
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005