PSEN cs4.2a
Operating Manual PSEN cs4.2a
1003575-EN-08
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Series connection
The safety sensors PSENcode are also suitable for series connection with other sensors.
Maximum number of PSENcode sensors switched in series connections for SIL CL 3 using
SDD
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PSENcode compact design (PSEN cs3 – cs4, 8-pin): 12
When using other SDD-compatible sensors, the number must be recalculated.
In practice, the maximum possible number will be limited by the following parameters,
among others:
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The required SIL level (e.g. SIL CL 3),
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the required performance level (e.g. PL e (Cat. 4)),
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the maximum delay or risk time permitted by the application.
Ensure there is sufficient supply voltage, taking inrush currents and fusing into considera-
tion.
CAUTION!
Extension of delay-on de-energisation
When several (n) devices are connected in series, the delay-on de-ener-
gisation time adds with the number of interconnected safety switches.
The max. delay-on de-energisation is made up of the
risk time (see
+ (n-1) x max. delay-on de-energisation of the inputs
+ max. delay-on de-energisation of the evaluation device
}
When making series connections using SDD, only use the following passive junctions.
– PSEN ix2 F4 code
– PSEN ix2 F8 code
– PSEN Y junction M8-M12/M12 PIGTAIL
– PSEN Y junction M12-M12/M12 PIGTAIL
– PSEN Y junction M12 SENSOR
– PSEN Y junction M12 cable channel
– PSEN Y junction M8 SENSOR
– PSEN Y junction M8 cable channel
