Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 25)

Function description
Operating Manual PMCprotego S1­2(­C)
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Timing diagram: STO is started once the STO delay time has elapsed
Braking ramp
v
t t1
SS1 Activate
1
0
STO Acknowledge
1
0
STO delay time
Tolerance window
Braking ramp
Limit value
Standstill detection
SS1 SIL3/Reset
1
0
STO
Ready
1
0
t2
Timing diagram: STO is started during the STO delay time
Braking ramp
Tolerance window
Braking ramp
Limit value
Standstill detection
STO delay time
SS1 Activate
SS1 SIL3/Reset
Ready
STO Acknowledge
Fig.: Safety function SS1
} t
1
: Activation of safety function SS1
} t
2
: Activation of safety function STO