Pilz PMCprotego S1 Operating Manual page 47

4 Function Description
4.3 Safety functions
v
Tolerance window
1
SS1 Activate
0
1
SS1 SIL3/Reset
0
1
SDI Neg Activate
0
1
SDI Pos Activate
0
1
Ready
0
1
STO Acknowledge
0
1
SDI Acknowledge
0
Fig. 4-12: Changing the direction of rotation with SDI delay time
t : Activation of safety function SDI in negative direction of rotation

1
t : Once the SDI delay time has elapsed, the negative direction of ro-

2
tation is monitored
SS1 Activate: Input for safety function SS1

SS1 SIL3/Reset: Input for SIL 3 and reset

SDI Neg Activate: Input for safety function SDI, anti-clockwise rota-

tion is monitored (new direction of rotation)
SDI Pos Activate: Input for safety function SDI, clockwise rotation is

monitored (old direction of rotation)
Ready: Output for operating status of the safety card

STO Acknowledge: Output for feedback from safety function STO

SDI Acknowledge: Output for feedback from safety function SDI

SDI
t 2
t 1
SDI delay time
SDI
t
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