Festo MPS PA Compact, Руководство пользователя

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Commissioning
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© Festo Didactic • MPS
®
PA Compact Workstation
5.6.1 Capacitive proximity sensor B113/B114
The two capacitive proximity sensors are used to determine liquid level in the lower
tank and are to be adjusted such as to enable the contactless sensing of the liquid in
the container, but not the wall of the container. The liquid changes the capacity of a
capacitor integrated into the proximity sensor.
Notes
The capacitive proximity sensors are used to sense the liquid level of both the lower
and upper liquid levels of the tanks.
Prerequisites
•
The tank and a profile for the attachment of the mounting bracket are assembled
•
The electrical connection of the capacitive proximity sensor is established
•
The power pack is switched on.
Procedure
1. Mount the proximity sensors onto the mounting bracket so that they do not
touch the tank, each at a distance of 5 mm from the tank.
2. Fill the tank with liquid.
3. The proximity sensors are set at the following values:
– 2 l (bottom); 6 l (top)
– Move the switches up or down until the switching status display (LED)
switches
on at the respective volume level.
Note
The proximity sensors must be triggered by the liquid in the tank. If there is no liquid
in the tank, there must be no signal available.
4. Check the positioning and setting of the proximity sensor by repeatedly filling
and emptying the tank.
5.6
Adjusting sensors