VEGA VEGAMET 602 - Manual (Page 19)

VEGAMET 601, 602 19
Failure Rectification/Measure
Function of VEGA-
MET 601 is wrong
or failed
Red failure LED
of VEGAMET 602
lights
a. Current value < 2 mA
- Check the supply voltage on the connection cable leading to the
sensor. The voltage should be at least 17 V.
Should you measure a value below 17 V, this indicates defect in the
signal conditioning instrument. In this case, send the instrument for
repair to VEGA.
- If at least 17 V are present, separate the signal conditioning instru-
ment from the connection cable and connect a resistor of 2.2 kOhm
to the sensor input of the signal conditioning instrument.
If the failure lamp continues to light, the signal conditioning instrument
is defective. In this case, send the instrument for repair to VEGA.
- Should the failure lamp extinguish, connect the signal conditioning
instrument again. Separate the sensor from the connection cable and
connect instead a resistor of 2.2 kOhm.
- If the failure lamp continues to light, probably the connection cable is
interrupted. Check the connection cable leading to the sensor.
- If the failure lamp extinguishes, the sensor is defective. Check the
connected sensor.
b. Current value > 23 mA
- Check all connections and the connection cable leading to the sen-
sor.
- Should the red failure lamp continue to light, separate the sensor
from the connection cable and connect instead a resistor of
2.2 kOhm.
If the failure lamp extinguishes, the sensor is defective. Check the
connected sensor.
- Should the failure lamp continue to light, reconnect the sensor. Sepa-
rate the signal conditioning instrument from the connection cable and
connect to its sensor input a resistor of 2.2 kOhm.
- Should the failure lamp continue to light, the signal conditioning instru-
ment is defective. In this case, return the instrument for repair to
VEGA.
- If the failure lamp extinguishes, there is probably a shortcircuit in the
connection cable. Check the connection cable leading to the sensor.
Diagnostics