Connection diagram, PLG cable, PU connector

(3) Cables and wiring length

Select the recommended cable size to ensure that a voltage drop will be 2% max.

If the wiring distance between the inverter and motor is long, the motor torque will decrease due to the voltage drop of the main circuit cable especially at high-frequency output. The PLG signal will also be affected by the voltage drop.

The following table indicates a selection example for the wiring length of 20m.

200V class (When input power supply is 220V)

Applicable Inverter

Terminal

Tightening

HIV Cables

Torque

mm2

 

Type

Screw Size

 

N·m

 

 

 

 

R, S, T

U, V, W

FR-V520-1.5K, 2.2K

M4

1.5

2

2

FR-V520-3.7K

M5

2.5

3.5

3.5

FR-V520-5.5K

M5

2.5

5.5

5.5

FR-V520-7.5K

M5

2.5

14

8

FR-V520-11K

M6

4.4

14

14

FR-V520-15K

M8

7.8

22

22

FR-V520-18.5K, 22K

M8

7.8

38

38

FR-V520-30K

M10

14.7

60

60

FR-V520-37K

M10

14.7

100

100

FR-V520-45K

M12

24.5

100

100

FR-V520-55K

M12

24.5

150

150

400V class (When input power supply is 440V)

Applicable Inverter

Terminal

Tightening

HIV Cables

Torque

mm2

 

Type

Screw Size

 

N·m

 

 

 

 

R, S, T

U, V, W

FR-V540-1.5K, 2.2K

M4

1.5

2

2

FR-V540-3.7K

M4

1.5

2

2

 

 

 

 

 

FR-V540-5.5K

M4

1.5

3.5

2

FR-V540-7.5K

M6

4.4

3.5

3.5

FR-V540-11K

M6

4.4

5.5

5.5

 

 

 

 

 

FR-V540-15K

M6

4.4

14

8

FR-V540-18.5K

M6

4.4

14

8

FR-V540-22K

M6

4.4

22

14

 

 

 

 

 

FR-V540-30K

M8

7.8

22

22

FR-V540-37K

M8

7.8

38

22

FR-V540-45K

M8

7.8

38

38

 

 

 

 

 

FR-V540-55K

M8

7.8

60

60

The line voltage drop can be calculated by the following expression:

Line voltage drop [V]

=

× cable resistance[m /m]× wiring distance[m] × current[A]

 

 

1000

Use a larger diameter cable when the wiring distance is long or when it is desired to decrease the voltage drop (torque reduction) in the low speed range.

CAUTION

Tighten the terminal screw to the specified torque.

A screw that has been tighten too loosely can cause a short circuit or malfunction.

A screw that has been tighten too tightly can cause a short circuit or malfunction due to the unit breakage.

The crimping terminals recommended for use to wire the power supply and motor are those provided with insulation sleeves.

(4) Wiring length

!The wiring length should be 100m maximum. (during vector control)

CAUTION

Especially for long-distance wiring, the inverter may be affected by a charging current caused by the stray capacitances of the wiring, leading to a malfunction of the overcurrent protective function or a malfunction or fault of the equipment connected on the secondary side. If fast-responce current restriction malfunctions when fast-responce current restriction function is made valid, disable fast- responce current restriction. (Refer to Pr.156 "stall prevention operation selection". )

(5)Cable gause for the control circuit power

Cable gause: 0.75mm2 to 2mm2

Tightening torque: 1.5N•m

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Mitsubishi Electronics FR-V500 instruction manual Cables and wiring length, 200V class When input power supply is