![background image](http://html1.mh-extra.com/html/sick/flexlock/flexlock_operating-instructions-manual_1264596036.webp)
LED indicators
OSSDs
Inputs
Status
STATUS
LOCK
DIAG
LOCK
IN 1/IN 2
Ö
Green
(1 Hz)
O
Green
O
Yellow
OFF
Lock
requested.
OFF
Actuator detected.
Locking function is locked.
No valid enable signal at IN1 and IN2
Ö
Green
(1 Hz)
o
o
OFF
Unlock
requested.
ON
Actuator detected.
Locking function is unlocked.
O
Green
O
Green
o
ON
Lock
requested.
ON
Actuator detected.
Locking function is locked.
O
Green
o
o
ON
Unlock
requested.
ON
Actuator detected.
Locking function is unlocked.
Not relevant
Not relevant
O
Yellow
OFF
Not relevant
OFF
No valid enable signal at IN1 and IN2
Not relevant
Not relevant
Ö
Red
(1 Hz)
Not relevant
Not relevant
Not relevant
Supply voltage too low or too high
10.1.3
Fault indications during operation
Table 15: Fault indications during operation
LED indicators
OSSDs
Inputs
Cause
Troubleshooting
STATUS
LOCK
DIAG
LOCK
IN 1/IN 2
Ö
Red
(1 Hz)
O
Yellow
Ö
Red
(1 Hz)
OFF
Not relevant
Not relevant
Device has tried unsuccess‐
fully to activate or deactivate
the safety locking function for
10 minutes.
b
Make sure that the auxili‐
ary release is not active.
b
Make sure that the
escape release is not
active.
b
Check the alignment of
the actuator.
b
Check that the actuator
reaches the end position
when closing the door.
b
Check whether the locking
pin is blocked by foreign
bodies.
Ö
Red
(1 Hz)
o
Ö
Red
(4 Hz)
OFF
Not relevant
Not relevant
External error
b
Check the OSSD connec‐
tion for a cross-circuit or
short-circuit.
b
Check the cables for dam‐
age.
b
Disconnect and restore
the voltage supply.
Ö
Red
(1 Hz)
o
Ö
Red
(1 Hz)
OFF
Not relevant
Not relevant
Voltage supply too low or too
high
1.
Check voltage supply.
2.
Disconnect and restore
the voltage supply.
O
Red
Ö
Yellow
(1 Hz)
O
Red
OFF
Lock
requested.
Not relevant
Actuator was removed while
the locking function was
active. Actuator is probably
damaged.
Replace actuator.
Ö
Green
(1 Hz)
or
O
Green
Ö
Ö
Yel‐
low/green
(1 Hz)
Irrelevant
Not relevant
Lock
requested.
Not relevant
Unable to activate the safety
locking function
Check the alignment of the
actuator. Check whether the
movable physical guard is
pulling on the actuator.
Ö
Green
(1 Hz)
or
O
Green
Ö
Ö
Yel‐
low/green
(4 Hz)
Irrelevant
Not relevant
Unlock
requested.
Not relevant
Unable to deactivate the
safety locking function.
Check the alignment of the
actuator. Check whether the
movable physical guard is
pulling on the actuator.
10
TROUBLESHOOTING
36
O P E R A T I N G I N S T R U C T I O N S | flexLock
8020562/2022-07-07 | SICK
Subject to change without notice