7
2525462-03-06/21 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR
EN
3.1.
Control of guard locking for variants with IMP/IMM connection
If the device is used as guard locking for personnel protection, the control of the guard locking must be regarded as a
safety function.
The safety level of guard locking control is determined by the device PFHD
int.
and by the external control (e.g. PFHD
ext.
of
the standstill monitor), but cannot be higher than PL d.
PFHD
int.
(internal electronic)
Guardlocking Device
PFHD
ext.
(e.g. standstill
monitor)
(locking mean)
Safety characteristics: category, Performance Level, PFH
D
Releasing guard locking
Ì
Safety functions
-Guard locking remains activated until IMP requests releasing the guard locking.
The decisive criterion for a possible request to deactivate guard locking is a voltage of at least 5 V between the inputs IMP
and 0 V or between IMP and IMM.
The external control system must recognize and react to short circuits on these control signals. Fault exclusion, e.g. by
laying the cables with protection, can be considered as an alternative.
3.2.
Control of guard locking via IO-Link communication
If the device is used as guard locking for personnel protection, the control of the guard locking must be regarded as a
safety function.
The device does not feature a safety characteristic for the control of the guard locking.
