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[ IX Troubleshooting ]
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HWE09080 GB
(5) Simple checking procedure for individual components of main inverter circuit
Before checking, turn the power off and remove the parts to be checked from the control box.
Part name Judgment method
Rush current
protection resis-
tor
R1(R2)
Measure the resistance between terminals: 22 ohm 10%
Electromagnetic
relay
72C
This electromagnetic relay is rated at 200VAC and is driven by a coil. The resistance between the
coils in row A cannot be measured with a tester.Check only for shorting.
DC reactor DCL Measure the resistance between terminals: 1ohm or lower (almost 0 ohm)
Measure the resistance between terminals and the chassis:
Check point
Row A
Not to be short-circuited
Row B to Row E
Installation direction
Test button
Row
A
Row
B
Row
C
Row
D
Row
E
A2 44 34 24 14
43 33 23 13
A1
Coil
Contact
Checking criteria
With the test button
turned off :
With the test button
turned on : 0
[THMU-A]