Festo Checkbox Compact CHB-C-C, Руководство пользователя

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3. The I/O module
3-8
Festo P.BE-CB-COMP-EN en 0211a
Buffer zone sensor (buffer)
The Checkbox is set at the factory for use with a buffer zone
sensor. The output of this sensor has 0 V potential in the rest
state. (24 V DC active high = normally-open function).
CheckKon
With CheckKon you can modify the following parameters of
the buffer zone:
– Switching logic
Buffer zone sensor type = normally open/closed
– Connecting 1 or 2 buffer zone sensors
(only Checkbox PLC, see chapter 4.3.5.)
– Signal delay
Minimum sensor signal duration for “Buffer zone empty”
or “Buffer zone full.”
Please note
You can optimize the operating reliability of your supply
system as follows:
– Use sensors which have a sensor output with a potential
of 24 V DC (24 V DC active low = normally-closed func-
tion) in the rest state.
– Adapt the setting of the sensor type with CheckKon.
In this way, you can prevent the system from becoming
blocked up in the event of e.g. a cable fracture.