Operating Instructions
Transponder-Coded Safety Switch CET.-AS-…
6
(Translation of the original operating instructions) 2113689-04-07/19
3. Description of the safety function
Devices from this series feature the following safety functions:
Monitoring of guard locking and the position of the guard
(interlocking device with guard locking according to ENISO14119)
Ì Safety function (see chapter 6.3. Switching states on page 10):
- When guard locking is unlocked, no valid code sequence is sent (monitoring of the locking device).
- When the guard is open, no valid code sequence is sent (monitoring of the door position).
- Guard locking can be activated only when the actuator is located in the switch head (failsafe locking mechanism).
Ì Safety characteristics: category, Performance Level, PFH
d
(see chapter 13. Technical data on page 24).
Activation of guard locking
If the device is used as guard locking for personnel protection, control of guard locking must be regarded as a safety function.
Guard locking is controlled on the output side via ASi bit D0 from the control system. The auxiliary power must not be
switched off for the CET, because the CET’s monitoring circuit is powered by the auxiliary power.
Guardlocking Device
PFH
D
ext.
(e.g. standstill
monitor)
(locking mean)
Control via ASi Bit D0
4. Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or if the safety regulations are not followed,
or if any servicing is not performed as required, liability will be excluded and the warranty void.
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