9
3
Maintenance and repair
3.1
Safety
3.1.1
Only qualified personnel should execute operations on maintenance.
3.1.2
The transducer meets ГОСТ Р 52319-2005 (IEC 61010-1:2001).
Insulation class - primary. Pollution degree is 2. Overvoltage category is III. Rated voltage of
measurable circuit is up to 660 V.
3.1.3
IT IS FORBIDDEN TO MAKE EXTERNAL CONNECTION IF INPUT SIGNAL IS ON.
3.2
Order of maintenance
3.2.1
It is recommended to carry out routine inspection in field quarterly. For this purpose:
-
turn input signal OFF;
-
remove dust from case of transducer;
-
examine case, connectors and mountings for absence of mechanical damage;
-
after inspection is done, turn ON input signal
3.2.2
To unfix transducer from rail, insert screwdriver in groove located at lower part of
transducer case.
3.3
Troubleshooting
3.3.1
Faults, probable reasons and solutions are given in table 4
Table 4
Fault
Probable reason
solution
There is no voltage at
transformer winding
Brake or short-circuit of
transformer winding
Replace transformer
No output signal while input
signal is ON
Break or short-circuit in wiring
Check voltage on C1-C3
capacitors. Eliminate break
or short-circuit
There is no voltage at the
output of rectifier
Bridge Rectifier (V1) has
failed
Replace bridge rectifier
Intrinsic error exceeds
an acceptable value
insignificantly
It is necessary to adjust the
transducer
Adjust the transducer using
additional adjustment
windings of the transformer