Справочник Пользователя для Mitsubishi Electronics FR-A500L

37

z

z

z

z

(1) Disconnect the external power supply cables (R, S, T) <L

1

, L

2

, L

3

> and motor cables (U, V, W).

(2) Prepare a tester. (Use 100

Ω

 range.)

Change the polarity of the tester alternately at the inverter terminals R, S, T, U, V, W, P and N <L

1

, L

2

, L

3, 

U, V,

W, + and ->, and check for continuity.

Note: 1. Before measurement, check that the smoothing capacitor is discharged.

2. At the time of continuity, the measured value is several to several ten’s-of ohms depending on the

module type, circuit tester type, etc. If all measured values are almost the same, the modules are
without fault.

R<L

1

>

P<+>

Discontinuity

R<L

1

>

N<->

Continuity

D1

P<+>

R<L

1

>

Continuity

D4

N<->

R<L

1

>

Discontinuity

S<L

2

>

P<+>

Discontinuity

S<L

2

>

N<->

Continuity

D2

P<+>

S<L

2

>

Continuity

D5

N<->

S<L

2

>

Discontinuity

T<L

3

>

P<+>

Discontinuity

T<L

3

>

N<->

Continuity

C

onverter m

odul

e

D3

P<+>

T<L

3

>

Continuity

D6

N<->

T<L

3

>

Discontinuity

U

P<+>

Discontinuity

U

N<->

Continuity

TR1

P<+>

U

Continuity

TR4

N<->

U

Discontinuity

V

P<+>

Discontinuity

V

N<->

Continuity

TR2

P<+>

V

Continuity

TR6

N<->

V

Discontinuity

W

P<+>

Discontinuity

W

N<->

Continuity

In

verter m

odul

e

TR5

P<+>

W

Continuity

TR2

N<->

W

Discontinuity

D1

D2

D3

D4

D5

D6

TR1

TR3

TR5

TR4

TR6

TR2

U

V

W

R

<L

1

>

S

<L

2

>

T

<L

3

>

C

P<+>

N

<->

Inverter module

Converter module