Wiring
Operating Manual PSEN sg2c
1003267-EN-04
28
X2-4
24 V
0 V
I1 (ST)
I3 (FS)
A1
A2
PSENsgate
O1 (FS)
Auswertegerät/
Evaluation device/
Appareil de surveillance/
Dispositivo di controllo
FS: Fail-safe
ST: Standard
I4 (FS)
X2-3
X1-3
X1-4
X1-1
X1-2
X1-6
X1-5
I2 (ST)
X1-9
O3 (ST)
X1-8
O2 (FS)
X1-7
5.11
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.
