VEGA VEGAMET 602 - Manual (Page 18)

18 VEGAMET 601, 602
5.3 Failure rectification
Failure Rectification/Measure
Instrument does not
function/Green
operating control
lamp extinguishes
Check the supply voltage and the mains connections by noting the
"Wiring instructions". If the instrument still does not function, call our
service department.
Function of VEGA- Check the sensor inputs for the following causes of failures:
MET 601 is wrong - shortcircuit on the input
or failed - sensor not correctly connected, i.e. polarity reversed
- sensor cable interrupted
Red failure LED - supply voltage too low
of VEGAMET 602
lights
Check if the sensor is connected correctly.
- failures in the sensor, effecting a current change below 2 mA or
above 23 mA, cause a fault signal in VEGAMET.
Measure the current
on the connection cable
leading to the sensor.
With Ex systems, make sure that the Ex protection is not
degraded by the measuring instruments.
+
–
mA V
VEGAMET
1 2 4 3
5 Diagnostics
5.1 Maintenance
The instrument is maintenance-free.
5.2 Repair
To correct possible defects, the instrument
must be opened. For safety and warranty
reasons, any internal work on the instru-
ments, apart from that involved in normal
installation and electrical connection, must be
carried out only by qualified VEGA person-
nel.
In case of a defect, please return the affected
instrument with a short description of the
error to our repair department.
Failures are brief instrument malfunctions
which are caused by wrong adjustment or
defects in the sensor or the connection ca-
bles.
Failures, their possible causes and their
elimination are listed under "5.3 Failure rectifi-
cation".
15 … 18 V
(24 V with VEGAMET 601)
4 … 20 mA
Diagnostics