Wiring
Operating Manual PSEN sg2c-5CCLLE
1004172-EN-02
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5.10
Series connection
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 may. delay-on de-energisation is composed of
max. delay-on de-energisation actuator
+ (n-1) x max. delay-on de-energisation of the inputs
+ delay-on de-energisation of the evaluation device
INFORMATION
When the solenoid is operated in single-channel, only a safety level of PL d
(Cat. 2) / SIL CL 2 can be achieved.
To achieve PL e (Cat. 4)/SIL CL 3, the solenoid must have dual-channel op-
eration.
For applications with single-channel operation of the solenoid (up to PL d/SIL CL 2) a mo-
mentarily overloadable safe output (1.8 A for 50 ms) can be used.
The device can be switched in series with all safety switches from Pilz. The maximum
switching current of the solenoid is present only while switching the solenoids for about 50
ms. The solenoids of the safety switches are switched with a low time offset of ca. 1 s, to
avoid power surges at the evaluation device.