VEGA VEGATOR 521, 522, 523, 527 - Manual (Page 23)

VEGATOR 23
Diagnostics
a. Current value < 2 mA
- Check the supply voltage on the connection cable to the sensor.
The voltage should be at least 18 V.
Should a value below 18 V should be measured, it indicates a
defect in the signal conditioning instrument. In this case, return
the instrument for repair to VEGA.
- Should the red failure lamp continue to light, separate the
connection cable from the signal conditioning instrument and
connect to the sensor inputs of the signal conditioning instrument
a resistor of 1 kOhm.
If the failure lamp continues to light, the signal conditioning
instrument is defective. In such a case, return the instrument for
repair to VEGA.
- Should the failure lamp extinguish, reconnect the signal
conditioning instrument. Separate the sensor from the connection
cable and connect a resistor of 1 kOhm in its place.
- Should the failure lamp continue to light, there is probably a short
circuit in the connection line. Check the connection cable to the
sensor.
- If the failure lamp extinguishes, the sensor is defective. Check the
connected sensor.
b. Current value > 22 mA
- Check all connections and the connection cable to the sensor.
- Should the red failure lamp continue to light, separate the sensor
from the connection cable and connect a resistor of 1 kOhm in its
place.
If the failure lamp extinguishes, the sensor is defective. Check the
connected sensor.
- Should the failure lamp continue to light, reconnect the sensor.
Separate the signal conditioning instrument from the connection
cable and connect a resistor of 1 kOhm to its sensor input.
- Should the failure lamp continue to light, the signal conditioning
instrument is defective. In such a case, return the instrument for
repair to VEGA.
- If the failure lamp extinguishes, there is probably a short circuit in
the connection line. Check the connection cable to the sensor.