Festo CAMC-G-S3 Manual page 96

2 Product description of safety module CAMC-G-S3
The logic to request the SSF0 safety function is shown in the following block diagram:
Safety Function SSF0
VIN_USF0_RSF
&
P0E.00
VIN_USF0_CSF
P0E.0B
ACTUAL_SPEED
P0E.0x
Fig. 2.24 Block diagram SSF0
Term/abbreviation
Safety Function SFF0
VIN_USF0_RSF
VIN_USF0_CSF
ACTUAL SPEED
TIMER + SPEED
RAMP GENERATOR
VOUT_USF0_SFR
VOUT_USF0_SSR
[53-0] USF0_ERR
SPEED_LIMIT
Tab. 2.52 Legend for Fig. 2.24
The safety function SSF0 is requested as follows:
– by the user via any combination of input signals LIN_D... on the signal VIN_USF0_RSF, if the SSF
function was activated using the parameter "Activate SSF" (P0E.00/...).
The request of the safety function SSF0 is cancelled as follows:
– by the user via a combination of different inputs, run on the signal VIN_USF0_CSF.
– by setting the parameter "Automatic restart allowed" (P0E.0B/...), an automatic restart is per­
formed when the request is cancelled.
The SSF0 function provides the following control signals for activation of the basic unit:
– Time-dependent limits for speed in the basic unit, SPEED_LIMIT.
96
TIMER
+
SPEED RAMP
S Q
GENERATOR
R
1
Explanation
Safety function SFF0
Virtual input: Request USF0
Virtual input: End USF0 request
Internal signal: Current speed
Timer and calculation of speed ramps
Virtual output: USF0 requested
Virtual output: Safe state USF0 reached
Internal error signal: Error 53-0
Internal signal: Speed limit in basic unit
VOUT_USF0_SFR
VOUT_USF0_SSR
[53-0] USF0_ERR
SPEED_LIMIT
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English