Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 47)

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4-29
4.3 Safety functions
4 Function Description
Fig. 4-12: Changing the direction of rotation with SDI delay time
 t
1
: Activation of safety function SDI in negative direction of rotation
 t
2
: Once the SDI delay time has elapsed, the negative direction of ro-
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
v
t
SS1 SIL3/Reset
1
0
1
0
1
0
1
0
1
0
SS1 Activate
Ready
STO Acknowledge
SDI
1
0
SDI Acknowledge
SDI Neg Activate
1
0
SDI Pos Activate
t1 t2
Tolerance window
SDI
SDI delay time