Operating Instructions

Variants for process protection (actuator monitoring)
OSSDs go into the ON state as soon as the following requirements are all fullfilled.
•
Mo
vable ph
ysical guard is closed.
•
There is a valid signal at the inputs In1 and In2.
Important information
DANGER
Haz
ard due to lack of effectiveness of the protective device
b
Do not use variants for process protection in applications in which the dangerous
state cannot be ended immediately (stopping/run-down time).
3.2.5 Application diagnostic output
Important information
NOTE
The applica
tion diagnostic output cannot be evaluated for a safe series connection with
T-connectors.
Switching behavior
The applica
tion diagnostic output switches parallel the detection of the actuator. This is
not a safety output.
Status of the movable physi‐
c
al guard
S
w
itching behavior of the application diagnostic output
Open OFF
Closed ON
3.2.6 Coded actuators
The safety locking device comes with coded actuators with transponders.
•
U
niq
ue
ly coded
Only one actuator is valid at any one time. Actuators need to be taught-in
to become valid
. Each time a new actuator is taught-in, the previous actuator
becomes invalid.
Coding level: High (ISO 14119)
•
Univ
ersally coded
The device accepts all actuators that are suitable for the device.
Coding level: Low (ISO 14119)
3.3 Manual unlocking
In some situations, it necessary to unlock the locking device manually (e.g. if faults are
present). W
hen unlocking, the safe output signal switching devices (OSSD) switch to the
OFF status. A stop command must be generated as a result.
After manual unlocking, a function test must be performed (see "Testing", page 26).
3.3.1 Auxiliary release
Using the auxiliary release, the safety locking device can be unlocked manually regard‐
less of t
he status.
PRODUCT DESCRIPTION 3
8020562/2021-04-30 | SICK O P E R A T I N G I N S T R U C T I O N S | flexLock
11
Subject to change without notice
Review version 2021-04-30