item Controller BL 1-04 /C
― Product manual
94
52-3
FSM: Limitation error
Cause:
Servo drive reports error if the currently requested direction of movement is
not possible because the safety module has blocked the setpoint value in this
direction.
Error may occur in connection with the SSFx safe speed functions if an asymme
-
trical speed window is used where one limit is set to zero. In this case, the error
occurs when the servo drive moves in the blocked direction in the Positioning
mode.
Measure:
Check application and change if necessary.
Group 53: FSM: Violation of safety conditions
53-0
USF0: safety condition
violated
Cause:
Violation of monitored speed limits of the SSF0 in operation / when USF0 /
SSF0 requested. Measure:
Check when the violation of the safety condition occurs:
a) During dynamic braking to safe rotational speed
b) After the drive has reached the safe 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 b) Check how far the current speed is from the monitored limit speed;
increase distance if necessary (parameter in safety module) or correct speed
specified by control.
53-1
USF1: safety condition
violated
Cause:
Violation of monitored speed limits of the SSF1 in operation / when USF1 /
SSF1 requested.
Measure:
See USF0, error 53-0.
53-2
USF2: safety condition
violated
Cause:
Violation of monitored speed limits of the SSF2 in operation / when USF2 /
SSF2 requested.
Measure:
See USF0, error 53-0.
53-3
USF3: safety condition
violated
Cause:
Violation of monitored speed limits of the SSF3 in operation / when USF3 /
SSF3 requested.
Measure:
See USF0, error 53-0.
