Festo CPX-F8DE-P Manual page 64

1. System overview CPX-F8DE-P
1-32
up to PL e, Cat. 4 / SIL 3
–
with certified switch/sensor of an appropriate safety cat­
egory
and with automatic testing of the safety function by a
machine within 24 hours
– up to PL e, Cat. 4 / SIL 3
with certified switch/sensor of an appropriate safety cat­
egory
and with wiring protection of the customer application in
accordance with EN 13849-2, Table D.4.
Function mode 7 – 1oo2 D
(two-hand control device of type IIIC in accordance
with EN 574)
Signal evaluation of up to 2 dependent two-channel switches/
sensors per channel pair, with temporal monitoring of signal
change.
For E1, E3, E5 and E7, the clock signals are wired as a mirror
image of E0, E2, E4 and E6
Actuation of both buttons within 500 ms generates a logical 1
in the input image of the channel pair.
Note that before every actuation, a zero crossing is required
(both NC standby contacts closed).
Circuit diagram
Tab. 1/22: Function mode 7 – 1oo2 D
Channel pair ports
T0 T2 T4
E1 E3 E5
0 V
E0 E2 E4
T1 T3 T5
Festo P.BE-CPX-F8DE-P-E N en 1610a English
T6
E7
E6
T7