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SQLC-220-086
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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.
Setting check.
Trouble of device.
Replace the device.
Measuring value error
is noticeable
Range is not set correctly.
Please set again.
Out of range in rated frequency (45 to 65Hz).
Cannot be used.
Cycle control, SCR phase angle control, PWM, or
other inverter output is measured.
Cannot be used.
Analog output is not
outputted.
Analog output is set to OFF or measurement factor
is set to OFF.
Please check setting
Pulse output is not
outputted.
Pulse output is set to OFF or measurement factor is
set to OFF.
Please check setting
Alarm output does not
return.
The return method is a "manual reset".
Please check setting
7.2 Test
In case this product is tested, a special setting or operation is not needed fundamentally.
However, the following test should operate it along with each process.
(1) Alarm output test
Even if this product does not have input, it can perform ON/OFF test of an alarm output (relay contact output).
Operation is performed by alarm 1 test and alarm 2 test in the setting mode 1.
Please refer to "5.3.1 Setting mode 1 (2) alarm output setup" about the details of operation.
In addition, an alarm return constitutes action corresponding to a return method setting (automatic reset /
manual reset) of each alarm output.
< Operating process >
・Alarm 1 test (Setting № 124)
(111) (121) (124)
Press SET for 3 seconds → Press MODE → Press RESET/SHIFT for 3 times → While pushing SET , the
alarm 1 output is ON.
・Alarm 2 test (Setting № 128)
(111) (121) (128)
Press SET for 3 seconds → Press MODE → Press RESET/SHIFT for 7 times → While pushing SET , the
alarm 2 output is ON.
(2) Harmonic time interval test
Please test by the following operation about the time interval of a harmonic. An error becomes large, in case
it tests without performing the following operation.
Operation is performed with the average time interval in the setting mode 1.
Please refer to "5.3.1 setting mode 1 (4) harmonic detection setting" for operation details.
< Operating process > (Setting № 14A)
(111) (141) (14A)
Press SET for 3 seconds → Press MODE for 3 times → Press RESET/SHIFT for 9 times
Please press SET simultaneously with a test start.
Please press DISPLAY and return to a measurement screen.