Function description
Operating Manual PMCprotego S12(C)
1002528EN03
36
Timing diagram with tolerance range activated
v
t
SS1 SIL3/Reset
1
0
1
0
Limit value
Maximum speed
1
0
1
0
1
0
SS1 Activate
Ready
STO Acknowledge
1
0
SSR Activate
SSR delay time
ta
te
SSR
t1
t1
t2
Limit value
Minimum speed
Tolerance amount
Tolerance amount
ts
SSR
SRA Safe Range
Acknowledge
Fig.: Safety function SSR with tolerance range activated
}
Tolerance amount as % of the two limit values, maximum and minimum speed
}
t
a
: Activation of safety function SSR
}
t
e
: Once the SSR delay time has elapsed, the speed is monitored
}
t
s
: Speed v exceeds the limit value and activates the tolerance range (tolerance
amount, tolerance time, tolerance period)
}
t
1
: Tolerance time
}
t
2
: Tolerance period
}
SS1 Activate: Input for safety function SS1
}
SS1 SIL3/Reset: Input for SIL 3 and reset
}
SSR Activate: Input for safety function SSR
}
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
}
SRA Safe Range Acknowledge: Output for monitoring the limit value on the motor
