Operating Instructions
Transponder-Coded Safety Switch CET.-AP-…
10
(Translation of the original operating instructions) 2122242-04-05/18
6.7.
Start button and feedback loop (optional)
A start button and a feedback loop can be connected (for monitoring downstream relays and contactors) (input Y).
Important!
Faults on the start button/in the feedback loop are not detected. This can lead to unintentional auto-
matic starting.
On devices with start button and feedback loop, safety outputs are switched on only when the start button is pressed
and the feedback loop is closed. Start button and feedback loop must be closed for at least 500 ms.
The monitoring output OUT is switched on as soon as guard locking is active. The status of the feedback loop/the start
button has no effect on this aspect (see also chapter
12. System status table on page 26
).
6.8.
Switching states
The detailed switching states for your switch can be found in the system status table. All safety outputs, monitoring outputs
and LED displays are described there.
Guard closed and locked
Guard closed and not locked
Guard open
Voltage on guard locking solenoid CET3
off
on
(irrelevant)
Voltage on guard locking solenoid CET4
on
off
(irrelevant)
Safety outputs OA and OB
on
off
off
Monitoring output OUT
on
off
off
Door monitoring output OUT D
(only CET3 and CET4)
on
on
off
