Festo Checkbox Compact CHB-C-X, Руководство пользователя

Страница: 85 / 148

4. I/O module extensions of the CHB−C−P/..X
4−21
Festo P.BE−CB−COMP−en en 0503c
1
Buffer zone
2
Conveyor device
3
Sensor 2
4
Sensor 1
1
2
3
4
Fig.4/2: Buffer zone check with switching delay
Sensor type Function
B ff ith t
Normally−
open
contact
1)
Normally−
closed
contact
2)
Buffer zone with one or two sensors
Sensor 1
LOW
Sensor 1
HIGH
The sensor does not register a
conveyed part. The small parts
conveyor is/remains switched on.
Sensor ...
3)
HIGH
Sensor ...
3)
LOW
The buffer zone is full. The display
switches to Full". Good parts are
returned. When the preset time has
expired, the small parts conveyor will
be switched off; the conveyor device
still runs.
1)
Factory presetting; negative switching (NPN), 24 V DC active high
2)
To be set with CheckKon (recommendation); positive switching
(PNP), 24 V DC active low (PNP), 24 V DC active low
3)
Buffer zone monitoring
with one sensor: Sensor 1
with two sensors: Sensor 2
Tab.4/18: Sensor function for type NPN or PNP