Figure 2: Actuator
1
Anchor plate
2
Protective cap
3
Actuator surface
3.2.2 Product variants
The safety switch is delivered in different variants. You will find an overview of impor‐
t
ant distinguishing features of the variants in the following.
•
2 cables with M12 plug connector (5-pin)
•
1 cable with M12 plug connector (5-pin)
•
1 cable with M12 plug connector (8-pin)
3.2.3 Locking principle
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
In the event of a voltage drop, the locking device unlocks regardless of whether the
dangerous state of the machine has ended
b
Do not use the safety switch in applications in which the dangerous state cannot
be ended immediately (stopping/run-down time).
Power to lock principle
•
L
ock locking device: voltage at locking device input
•
Unlock locking function: no voltage at locking device input
If voltage is interrupted, the locking device is unlocked and the protective device can be
opened immediately.
Complementary information
•
T
he locking device is not monitored, which means that the safety switch does not
check whether the anchor plate is applied to the solenoid.
•
The locking force is not monitored.
•
Locking force is not a safety-related function.
3.2.4 Protective functions
The safety switch has the following internal protective functions:
•
S
hort-circuit protection at all outputs
•
Cross-circuit monitoring at OSSDs
3 P
RODUCT DESCRIPTION
10
O P E R A T I N G I N S T R U C T I O N S | MLP1 8020169/ZJN1/2018-03-21 | SICK
Subject to change without notice
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