Siemens SINUMERIK 840D sl Function Manual page 458

Diagnostics
10.2 NCK safety alarms for SINUMERIK 840D sl
Remedy
Program
continuation
20096
Parameter
Explanation
Response
Remedy
Program
continuation
20097
Parameter
Explanation
Response
Remedy
Program
continuation
10-458
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Check the parameterization for the brake test function: The torque for
weight equalization in drive parameter p1532 should be approximately
the same as the actual holding torque.
The specified torque for the brake test in MD $MA_SAFE_BRAKET-
EST_TORQUE must be set higher than the actual holding torque.
Clear the alarm with the Clear key or with NC–START.
Axis %1 brake test aborted, additional info %2
%1 = axis name, spindle number
%2 = fault information, based on $VA_FXS_INFO
The brake test has detected a problem. The additional information pro-
vides details of the cause of the alarm. An explanation is provided in
the documentation about the system variables $VA_FXS_INFO
Supplementary info:
0: No additional information available
1: Axis type is neither a PLC nor a command axis
2: Limit position reached, motion stopped
3: Abort using NC–RESET (key reset)
4: Monitoring window exited
5: Torque reduction rejected by drive
6: PLC has withdrawn the enable signal
Alarm display
Interface signals are set.
Note the supplementary conditions of the brake test, refer to supple-
mentary information.
Clear the alarm with the Clear key or with NC–START.
Axis %1 incorrect traversing direction brake test
%1 = axis name, spindle number
As a result of the selected traversing direction, the brake test is carried
out for the existing load torque with an incorrect torque.
Alarm display
– Carry out the brake test in the other traversing direction
– Adapt drive parameter p1532 more precisely to the actual situation.
This alarm only occurs – with the brake open – if the actual torque
deviates by more than 5% of parameter p1532
– Using MD $MA_SAFE_BRAKETEST_CONTROL, bit 0 = 1, activate
the automatic load torque determination at the beginning of the
brake test.
Clear the alarm with the Clear key or with NC–START.
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05.08