Vega Capacitive electrodes EL 4 … 20 mA - Compact Bedienungsanleitung PDF herunterladen (Seite 39)

Capacitive electrodes EL 4 … 20 mA - Compact 39

22652-EN-020809

–

4 … 20 mA 12 … 20 V

Sensor

Diagnosis

5.4 Fault rectification

Fault Rectifying measure

Current value Check the sensor inputs on the following failures:

≥ 22 mA - short-circuit on the input

- sensor not connected correctly

- sensor cable interrupted

- supply voltage too low or too high

Measure the current on the connection cable to the sensor.

Under normal conditions, the terminal voltage of the sensor is at least

12 V.

In Ex systems, make sure that the Ex protection is not influ-

enced by the measuring instruments.

Current value > 22 mA

- Check all connections and the connection cable to the sensor.

- Loosen the two small screws with a Phillips screwdriver and remove

the oscillator from the plug connection.

- Measure the current.

• If the current value remains > 22 mA, then the oscillator is

defective. Exchange the oscillator.

• If the current value is < 22 mA, the the electrode is defective.

Return the electrode for repair.

12 … 36 V

e.g. VEGATOR

1 2 ... 34 35 36 37 38 39 40 41 42 43 44

Keine Kommentare

Vega Capacitive electrodes EL 4 … 20 mA - Compact Bedienungsanleitung Seite 39