What to doCauseFault
Calculate a new watchdog time. See
section PROFIsafe response
time (page 122).
The watchdog time is too short.PROFIsafe communication watch-
dog time exceeds often.
Reboot the safety PLC.After you have modified the config-
uration of the safety devices, you
may have to reboot of the whole
system before the changes take ef-
fect.
All errors solved but you still cannot
start the PROFIsafe communication.
If this does not help, reboot also the
FSPS-21 module and the drive.
To reboot the FSPS-21 module:
• switch the power off and on, or
• use drive parameter FBA A/B
PAR REFRESH (parameter
51.27/54.27, see the drive firm-
ware manual).
To reboot the drive:
• switch the power off and on, or
• use drive parameter Control board
boot (parameter 96.08, see the
drive firmware manual).
172 PROFIsafe
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