VEGA VEGASWING 83A EXD - Manual (Page 27)

VEGASWING 81A EXD and 83A EXD 27
b.Current value > 22 mA
- Check all connections and the connection line to the sensor .
- Should the red failure lamp still light, separate the sensor from the
connection line and connect instead a r esistor of 1 kW.
When the failure lamp extinguishes, the sensor will be defect. Check
the connected sensor .
- Should the failure lamp still light, connect the sensor again. Separate
the signal conditioning instrument from the connection line and con-
nect to the sensor input a r esistor of 1 kW.
- Should the failure lamp still light, the signal conditioning instrument will
be defect. In this case return the instrument for repair to VEGA.
- When the failure lamp extinguishes, there is probably a shortcircuit in
the connection line. Check the connection line to the sensor .
Malfunction during After pushing the test key , the switching conditions do not occur in the
function test correct sequence or the correct period, e.g. there is no full signal
provided.
- Measure the line resistance
When the line is high-resistance, you have to take appropriate meas-
ures to reach a standard resistance. E.g. check the terminals and
cable connections on corrosion.
Diagnosis