
Operating Instructions
Transponder-Coded Safety Switch CTP/CTA-L1/2-BP
26
(translation of the original operating instructions) 2537377-01-05/21
5. System status table CTP/CTA-L1/2-BP
Operating mode
Actuator/door position
Safety outputs FO1A and
FO1B
Guar
d locking signal OL
Door position signal OD
LED indicator
Output
State
ST
ATE (gr
een)
DIA (r
ed) and diag
-
nostic signal OI
LOCK (yellow)
Self-test
X
off
off
off
5 Hz
Self-test after power-up
X
off
off
off
5 Hz
1 x
No communication with the BR/IO-Link Gateway
Normal operation
closed
on
on
on
Normal operation, door closed and locked
open
off
off
off
1 x
1 x
Normal operation, door open, ready for guard locking
closed
off
off
on
1 x in-
verse
Normal operation, door closed and
not
locked
open
off
off
off
1 x
Normal operation, door open
Teach-in operation
(only unicode)
open
off
off
off
3 x
Device in teach-in standby
closed
off
X
on
1 Hz
Teach-in operation
X
off
X
X
Positive acknowledgment after completion of teach-in
operation
Fault display
X
off
x
x
1 x
or
1 x in-
verse
Error in the teach-in operation (only unicode)
Actuator removed from the actuating range prior to the
end of the teach-in operation or faulty actuator detected
X
off
off
off
3 x
Read error
(e.g. actuator faulty)
X
off
off
off
4 x
Output fault
(e.g. short circuit, loss of switching ability)
X
off
X
X
5 x
Disabled actuator detected/environment error
X
off
off
off
Internal fault/plausibility error
Key to symbols
LED not illuminated
LED illuminated
1 x in-
verse
LED illuminated, briefly goes off 1 x
5 Hz
LED flashes at 5 Hz
3 x
LED flashes three times, and this is then repeated
LEDs flash alternately
X
Any state
When DIA flashes inversely once, the fault display can generally be reset by opening and closing the guard after remedying
the cause. If the fault is still displayed afterward, as well as for all other fault displays, briefly interrupt the power supply.
Contact the manufacturer if the fault display is not reset after restarting.
Important!
If you do not find the displayed device status in the system status table, this indicates an internal device
fault. In this case, contact the manufacturer.