11
2537376-01-04/21 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTP/CTA-L1/2-BR
EN
6.4.3. Guard locking on version CTP/CTA-L1 and control via IO-Link communication
(guard locking actuated by spring force and released by power-ON)
Activating guard locking: close guard; no auxiliary voltage at the solenoid and set bit CL.
Releasing guard locking: apply auxiliary voltage to the solenoid and clear bit CL.
The spring-operated guard locking functions in accordance with the closed-circuit current principle. If the auxiliary voltage
is interrupted at the solenoid, the guard locking remains active and the guard cannot be opened directly.
Important!
If the guard is open when the power supply is interrupted and is then closed, guard locking is activated.
This can lead to persons being locked in unintentionally.
The actuator cannot be pulled out of the switch and the guard is locked as long as the guard locking pin is extended.
If the auxiliary voltage is applied to the guard locking solenoid, the guard locking pin is retracted and the actuator is released.
The guard can be opened.
6.4.4. Guard locking on version CTP/CTA-L2 and control via IO-Link communication
(guard locking actuated by power-ON and released by spring force)
Important!
Use as guard locking for personnel protection is possible only in special cases, after strict assessment
of the accident risk (see ENISO14119:2013, section 5.7.1)!
Activating guard locking: apply auxiliary voltage to the solenoid and set bit CL.
Releasing guard locking: disconnect auxiliary voltage from the solenoid and clear bit CL.
The magnetically actuated guard locking operates in accordance with the open-circuit current principle. If the auxiliary voltage
is interrupted at the solenoid, the guard locking is released and the guard can be opened directly!
The guard can be opened as long as no auxiliary voltage is applied to the guard locking solenoid.
If the auxiliary voltage is applied to the guard locking solenoid, the guard locking pin is held in the extended position and
the guard is locked.
6.5. Switching states
The detailed switching states for your switch can be found in the system status table (see chapter 13. System status table
CTP/CTA-L1/2-BR on page 37). All safety outputs, signals and display LEDs are described there.
6.5.1. Switching states on version CTP/CTA-L1/L2
Guard closed and locked
Guard closed and not locked
IMP
IMM
Guard open
P
M
Voltage at guard locking solenoid CTP/
CTA-L1
off on (irrelevant)
Voltage at guard locking solenoid CTP/
CTA-L2
on off (irrelevant)
Safety outputs FO1A and FO1B
on off off
Guard locking signal OL on off off
Door position signal OD on on off
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