Festo CAMC-G-S3 Manual page 67

2 Product description of safety module CAMC-G-S3
The logic to request the STO safety function is shown in the following block diagram:
Safety Function STO
SS1_STO_RSF
ERR_STO_RSF
VIN_STO_RSF
VIN_STO_CSF
P0A.00
P0A.0x
Fig. 2.14 Block diagram STO
Term/abbreviation
Safety Function STO
SS1_STO_RSF
ERR_STO_RSF
VIN_STO_RSF
VIN_STO_CSF
TIMER
VOUT_PS_EN
VOUT_STO_SFR
VOUT_STO_SSR
[54-5] STO_ERR
STO_SBC_RSF
Tab. 2.27 Legend for Fig. 2.14
The safety function is requested as follows:
– by the user via any combination of input signals LIN_D... on the signal VIN_STO_RSF.
– as an error reaction, controlled via the error management system, signal ERR_STO_RSF.
– via the safety function SS1, signal SS1_STO_RSF.
A request for the safety function STO is cancelled as follows:
– by the user via a combination of different inputs on the signal VIN_STO_CSF.
– setting the parameter "Automatic restart allowed" (P0A.00) performs an automatic restart when
the request is cancelled.
Each request of the safety function has priority over termination of the request.
This means: As long as one of the xxx_RSF (Request Safety Function) signals is pending, the safety
function cannot be terminated by an xxx_CSF (Clear Safety Function) signal.
The safety function controls the switch-off of the driver supply via the VOUT_PS_EN signal.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
1 1
S Q
TIMER
R
1
Explanation
STO safety function
Internal signal: Request STO by SS1
Internal signal: Request STO through error reaction
Virtual input: Request STO
Virtual input: Terminate STO request
Timer
Virtual output: Output stage enable approved
Virtual output: STO requested
Virtual output: Safe state STO reached
Internal error signal: Error 54-5
Internal signal: Request SBC by STO
VOUT_PS_EN
VOUT_STO_SFR
VOUT_STO_SSR
[54-5] STO_ERR
STO_SBC_RSF
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