Service functions and error messages
Page 127
Error message
Meaning of the error message
Measures
Main
index
Sub index
4
FSM: Fault in SSIO communication
Cause:
Error in the internal communication connection
between the basic device and the safety module.
Action: Identify interfering radiators in the environment of
the servo drive.
Replace module or basic device.
Please contact the Technical Support.
5
FSM: Fault in FSM break control
Cause:
Internal hardware error (brake activation control
signals) of the safety module or fieldbus
activation module.
Action:
Module presumably defective. If possible,
replace with another module.
Cause:
Error in brake driver circuit section in the basic
device.
Action:
Basic device presumably defective. If possible,
replace with another basic device.
52
1
Safety function: Discrepancy time
overrun
Cause:
Control ports STO-A and STO-B are not actuated
simultaneously.
Action:
Check discrepancy time.
Cause:
Control ports STO-A and STO-B are not wired in
the same way.
Action:
Check circuitry of the inputs.
Cause:
Upper and lower switch supply voltage not
simultaneously activated (discrepancy time
exceeded)
Error in control / external circuitry of safety
module.
Error in safety module.
Action: Check circuitry of the safety module – are the
inputs STO-A and STO-B switched off on two
channels and simultaneously?
Replace safety module if you suspect it is faulty.
2
Safety function: Failure of driver supply Cause: Failure of driver supply voltage with active PWM.
