7)Individual Parts Failure Judgment Methods.

Part Name

Judgment Method

 

 

Diode Stack (DS)

Refer to “Judging Diode Stack Failure.”

 

 

Intelligent Power Module(IPM)

Refer to “Judging IPM Failure.”

 

 

Electromagnetic Contactor (52C)

Measure the resistance value at each terminal.

 

 

 

A2

 

 

A1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/L1

 

3/L2

 

5/L3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Location

Judgment Value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A1-A2

0.1k~1.3kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/L1-2/T1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/L2-4/T2

∞

 

 

 

2/T1

 

4/T2

 

6/T3

 

5/L3-6/T3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rush Current Protection Resistor (R1, 5) Measure the resistance between terminals: 4.5k~5.5kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DC Reactor (DCL)

Measure the resistance between terminals: 1 Ω or lower

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between the terminals and the chassis: ∞

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling Fan (MF1)

Measure the resistance between terminals: 0.1k~1.5kΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transformer (T01)

Measure the resistance between terminals on the primary side (CNTR1):

 

1.0k~2.5kΩ

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between terminals on the secondary side (CNTR):

 

20~60Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

AC Current sensor (ACCT)

Measure the resistance between terminal between 1pin and 2pin, 3pin and

 

4pin : 35 ~ 45 (Ω

 

)

 

 

 

 

 

[Caution at replacement of inverter parts]

1IPM and G/A board should be replaced together at the same time.

When the IPM is damaged, the G/A board may possibly be broken, and the use of the broken G/A board damages the normal IPM. Therefore, replace the IPM and G/A board together at the same time. However, if the G/A board is damaged, judge that the IPM is faulty, then judge whether replacement is necessary or not.

2Fully check wiring for loose and incorrect connections.

The incorrect or loose connection of the power circuit part wiring like IPM and diode module causes damage to the IPM. Therefore, check the wiring fully. As the insufficient tightening of screws is difficult to find, tighten them together additionally after finishing other works. For the wiring of the base for IPM, observe the wiring diagram below care- fully as it has many terminals.

3Coat the grease provided uniformly onto the heat radiation surface of IPM /diode modules.

Coat the grease on the full surface in a thin layer, and fix the module securely with the screw for fastening. As the radiation grease attached on the wiring terminal causes poor contact, wipe it off if attached.

–88–

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Mitsubishi Electronics P500YMF-C, PURY-P400 specifications A1-A2, 20~60Ω AC Current sensor Acct
Page 89 Page 91

PURY-P400, P500YMF-C specifications

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