SVLC-212-175
42
7. Maintenance and check
7.1 Trouble shooting
Symptoms
Possible causes
Remedial measures
Indicator does not
display.
The power supply is not supplied.
(Not connected. or voltage is low)
Check the auxiliary supply.
Again, a power supply is supplied.
Measurement display ON/OFF setting is set to OFF. Check the setting.
Trouble of device.
Replace the device.
Backlight does not
lights.
It is set as AUTO (auto off) or OFF (always-off). Check the setting.
Have a margin of
measurement error.
Setting of a range is not right.
Please set again.
Wiring is not right.
Check the wiring.
Outside the rated frequency (45～65Hz).
It cannot be used.
Cycle control, SCR phase angle control, PWM control,
or other inverter output is measured.
It cannot be used.
Analog output is not
outputted.
Analog output is set to OFF or measurement factor is
set to OFF.
Check the setting.
Alarm output does not
return.
The return method is a "manual reset".
Check the setting.
Settings changed.
It changed an input circuit setting.
Please set again.
7.2 Check
Be careful with the following items periodically.
(1) Check if the measuring values, scale digits, units, etc. are displayed correctly.
(2) Check if LCD is free of a color change, breakage of case, or other defects.
(3) Check the unit for loose wiring and loose mounting screws.
(4) Please remove, if dust has adhered to the product.
