SICK i110

DANGER
H
azard due to lack of effectiveness of the protective device
In the event of a voltage drop, the safety locking device unlocks regardless of whether
the dangerous state of the machine has ended.
b
Assess the risk of accident. Use for protecting people requires correct project plan‐
ning.
3.2.2 Locking device monitoring
All variants feature at least 1 positive opening normally closed contact for locking
de
vice monitoring. The output state changes when locking or unlocking the locking
device.
Variants with 2 positive opening normally closed contacts for locking device monitoring
are recommended to protect people.
3.2.3 Door monitoring
All versions feature at least 1 positive opening normally closed contact for door monitor‐
in
g. Depending on the product variant, the contacts can be positive opening normally
closed contacts, normally open or normally closed contacts. The output state changes
when opening or closing the protective device.
Variants with 2 positive opening normally closed contacts for door monitoring are rec‐
ommended for process protection.
3.3 Symbols on the product
Table 1: Symbols on the product
Symbol Meaning
Positive opening normally closed contact for locking device moni‐
t
oring
Positive opening normally closed contact for door monitoring
Mechanical unlocking mechanism actuated, safety locking device
unloc
ked
Mechanical unlocking mechanism not actuated, safety locking
de
vice functions normally
3.4 Manual unlocking
In some situations, it necessary to unlock the locking device manually (e.g. is faults are
pr
esent). After unlocking, a function test must be performed.
Mechanical unlocking mechanism
With the mechanical unlocking mechanism, the safety locking device can be unlocked
regardless of the status.
When actuating the mechanical unlocking mechanism, the contacts for locking device
monitoring open. A stop command must be generated.
Actuating the mechanical unlocking mechanism
b
Ensur
e tensile stress is not applied on the actuator.
b
Loosen safety screw with the screwdriver.
b
Use the screwdriver to rotate the mechanical unlocking mechanism in the direc‐
tion of the arrow to the following symbol:
PRODUCT DESCRIPTION 3
8020543/17K9/2020-06-08 | SICK O P E R A T I N G I N S T R U C T I O N S | i110 Lock
9
Subject to change without notice