Festo CAMC-G-S3 Manual page 97

2 Product description of safety module CAMC-G-S3
In addition, the SSF0 function generates the status messages
– VOUT_USF0_SFR, safety function USF0 requested.
– VOUT_USF0_SSR, safe state USF0 reached.
USF0 output signals
VOUT_USF0_SFR
VOUT_USF0_SSR
Tab. 2.53 SSF0 status signals
Each request of the safety function has priority over termination of the request.
This means: As long as one of the xxx_RSF signals is pending, the safety function cannot be terminated
by an xxx_CSF signal.
Error detection
The safety condition is considered violated when the rotational speed is continuously outside the per­
mitted range for the time "Allowable time for limit value violation" (P0E.03/...). The violation is con­
sidered as cancelled when the rotational speed is continuously within the permitted range for the time
"Allowable time for limit value violation".
Please note
In applications with only one shaft encoder / position encoder with analogue signal
interface (Resolver, SIN-/COS, Hiperface, etc.), the restrictions regarding diagnostic
cover and possible accuracy of rest and speed monitoring must be taken into account
è Appendix A.3.5 and A.3.6.
If the safety condition is violated, an error is triggered, which results in an error response which can be
parameterised.
The error "Safety condition violated" is also generated when a position encoder fails and thus no reli­
able speed information is available.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Idle state Safety function requested / achieved
0 1
0 1 (displayed, see runtime performance)
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