Function description
Operating Manual PMCprotego S2-2(-C)
1002529-EN-04
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Timing diagram:
v
t
Reset
1
0
1
0
1
0
1
0
1
0
SS1 Activate
Ready
STO Acknowledge
SDI
1
0
SDA Safe Direction
Acknowledge
SDI Neg Activate
1
0
SDI Pos Activate
t1
t2
Tolerance window
SDI
SDI delay time
Fig.: 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 rotation is monitored
}
SS1 Activate: Input for safety function SS1
}
Reset: Input for reset
}
SDI Neg Activate: Input for safety function SDI, anti-clockwise rotation is monitored
(new direction of rotation)
}
SDI Pos Activate: Input for safety function SDI, clockwise rotation is monitored (old dir-
ection of rotation)
}
Ready: Output for operating status of safety card and second output for feedback from
safety function STO
}
STO Acknowledge: Output for feedback from safety function STO
}
SDA Safe Direction Acknowledge: Output for feedback from safety function SDI
