System Manual Safety Switch CES-AH-C03-AH-SM
18
Typical system times
Ready delay:
After switching on, the unit carries out a self-test for 3 s. The system
is ready for operation only after this time.
Risk time according to EN 60947-5-3:
If an actuator moves outside the oper-
ating distance, the safety outputs LA and LB on the corresponding safety switch
are deactivated after a maximum of 60 ms.
Difference time:
The safety outputs LA and LB switch with a slight time offset.
They have the same signal state at the latest after a difference time of 50 ms.
System times for "restart after fault" and "normal operation"
Example application: UB = 4 V
+LA permanently connected to UB
+ LB switched by control system
D
t
1
= Fault detection time
D
t
2
= Fault time (5 s, switch spends this time in the fault state)
D
t
3
= PowerUp time (3 s)
D
t
4
= Risk time (
≤
60 ms, time from "no actuator" to "outputs switch off")
Figure 3: System times for individual switches
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