item Controller BL 1-04 /C
― Product manual
96
54-4
SS1: safety condition
violated
Cause:
Actual speed outside permitted limits for too long. Measure:
Check when the violation of the safety condition occurs:
a) During dynamic braking to zero.
b) After the drive has reached zero speed.
▪ With a) Check of braking ramp – record the speed - can the drive follow the
ramp? Change parameters for the slowdown ramp or start time /delay times
for monitoring.
▪ With a) If the option "Activate quick stop ramp in base device" is activated:
Check of the servo drive‘s quick stop ramp.
▪ With b) Check whether the drive continues to oscillate after reaching the zero
speed or remains at idle and stable – increase monitoring tolerance time if
necessary.
▪ With b) If the actual speed value is very noisy when at rest: Check and if
necessary adjust expert parameters for speed recording and detection of
standstill.
54-5
STO: safety condition
violated
Cause:
Internal hardware error (voltage error) of the safety module.
Measure:
Module presumably defective. If possible, replace with another module.
Cause:
Error in driver circuit section in the servo drive. Measure:
Servo drive presumably defective. If possible, replace with another servo drive.
Cause:
No feedback received from servo drive to indicate that output stage was swit
-
ched off.
Measure:
Check whether the error can be acknowledged and whether it occurs again
upon a new STO request – if yes: Servo drive presumably defective. If possible,
replace with another servo drive.
54-6
SBC: brake not released for
> 24 hrs
Cause:
Error occurs when SBC is requested and the brake has not been released by the
servo drive in the last 24 hours.
Measure:
▪ If the brake is actuated via the brake drivers in the servo drive [X6]: The brake
must be energised at least once within 24 hours before the SBC request
because the circuit breaker check can only be performed when the brake is
switched on (energised).
▪ Only if brake control takes place via DOUT4x and an external brake control
-
ler: Deactivate 24 hr monitoring in the SBC parameters if the external brake
controller allows this.
54-7
SOS: SOS requested > 24
hrs
Cause:
If SOS is requested for more than 24 hours, the error is triggered.
Measure:
Terminate SOS and move axle at least once during this time.
