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Festo — CPX-F8DE-P — 2022-10d
System overview CPX-F8DE-P
Fig. 6: Function mode 2 – 1oo1 test
Function mode 2 can be used as a test mode when you connect sensors for function mode 1.
A safety controller that alternately uses the function mode 1 and 2 can in this way generate user-spe-
cific test signals and evaluate whether a zero crossover has taken place.
Software-generated test signals only work with the following manifold blocks:
• CPX-M-AB-4-M12X2-5POL-T
• CPX-AB-8-KL-4POL.
NOTICE
Safety requirements cannot be evaluated by the safety control unit during the test period.
Function mode 2 can be alternatively used to reset sensors with self-monitored electronic outputs.
Functional safety
–
PL c, Cat. 1/SIL 1
with switch/sensor tried and tested in accordance with EN 13849-2, Table D.3,
and with wiring protection of the customer application according to EN 13849-2, Table D.4
2.3.3.4
Function mode 3 – 1oo1 T (with clock signal monitoring)
Signal evaluation of up to 2 independent single-channel switches/sensors per channel pair with
individually clocked sensor power via T0, T2, T4, T6 and with common clock signal via T1, T3, T5, T7.
This function mode detects short circuits and cross circuits in the sensor wiring.
Example A
2 single-channel switches/sensors (N/O or N/C)
