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33
Parts name
Evaluation criteria
Diode bridge
Measure the resistance between terminals. : 1
Ω
or less
Measure the resistance between the terminal and the chassis. :
Disconnect the CNCT2 connector, and check the resistance between the terminals.
: 580
Ω
±
30
Ω
Disconnect the connector CNTH, and measure the resistance between connector terminals.
Check that the terminals are not short-circuited (0
Ω
) or open-circuited (
∞
Ω
).
Inrush current limiting resistor R
AC reactor (ACL)
Current sensor ACCT
THHS sensor
Refer to (5) Troubleshooting the diode bridge.
Measure the resistance between terminals. : 22
Ω
±
10 %
(4) Simple check on the main inverter circuit components
(5) Troubleshooting the diode bridge
* Turn off the power supply, take the following components out of the control box, and then check the components.
Measure the resistance between terminals of the diode bridge with a tester, and use the measured value for troubleshooting.
Read before taking measurements.
- Check the polarity before taking measurements. Black is positive on a regular multimeter when it is used to
measure resistance.
- Check that the circuit is not completely open (
Ω
) or short-circuited (-0
Ω
).
- These resistance measurement values are provided only as a guide, and small deviations from these values
are allowed.
- If the resistance between a given terminal and other terminals all fall within a range of minus 50% and plus
100%, the resistance is normal.
Tester restrictions
- Use a tester that has an internal voltage supply of 1.5 V or greater.
- Use a dry-battery-powered tester.
(An accurate diode resistance measurement cannot be obtained with a button-battery-operated card tester
because of its low applied voltage.)
- Use a tester that can measure in small increments.
It will allow for more accurate measurement.
External view
Internal circuit diagram
~
(L)
~
(L)
~
(L)
~
(N)
5~200
Ω
5~200
Ω
5~200
Ω
5~200
Ω
~
(N)
~
(N)
+
+
L
N
+
+
-
-
-
-
<Reference values for resistance check>
HWE17030.qxd 17.11.9 16:28 Page 33
Содержание PEA-RP200WKA
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