SOPA-...
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Festo – SOPA-... – 2017-09b English
6.2
Using the differential pressure regulator
In order to enable faster response times with low measuring distances or completely sealed measuring
nozzles, a
differential pressure regulator
(LRLL-1/8-QS-6) can be used instead of the vent screw. The
valve function enables the pressure to be exhausted significantly quicker than via the vent screw.
Connecting the differential pressure regulator
1. Remove the vent screw (spanner size AF 14) and mount the differential pressure regulator
(LRLL-1/8-QS-6) to this port (
è
Fig. 2).
2. Press the CLEAN pushbutton (CLEAN = OFF) and then the SENSE pushbutton (SENSE = ON) on the
control module.
3. Make sure that no workpiece is inserted.
4. Turn the adjusting screw on the differential pressure regulator clockwise (towards LOW) until no air
flows from the differential pressure regulator.
5. Turn the adjusting screw on the differential pressure regulator counter-clockwise (towards HIGH)
until air starts to flow from the differential pressure regulator.
Checking the settings of the differential pressure regulator
1. Seal the measuring nozzles (e.g. clamp workpiece).
2. Press the CLEAN pushbutton (CLEAN = OFF) and then the SENSE pushbutton (SENSE = ON) on the
control module.
è
The “ready for operation” signal switches on after a short delay.
è
If the delay is too long: reduce the time by turning the adjusting screw on the differential
pressure regulator towards HIGH.
7
Maintenance and care
Cleaning the SOPA from the outside
1. Switch off the operating voltage.
2. Switch off the compressed air.
3. Clean the SOPA from the outside.
Soap suds (max. +60 °C), petroleum ether and all non-abrasive cleaning agents may be used.