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Part 1 Installation

6. Auxiliary Power Equipment

6.1 Example of Auxiliary Power Equipment Configuration

[1] Breaker

Install a circuit breaker on the AC power-supply line side (primary side) of the controller to prevent damage

caused by power switching or short-circuit current.Install an earth leakage breaker on the AC power-supply

line side (primary side) of the controller to cut off leak current should it generate. A single breaker may be

used for both the motor power supply and control power supply.

As a selection guideline, it is recommended that you select a breaker capable of accommodating three

times the rated motor power-supply capacity by considering potential power-supply capacity requirements

during acceleration/deceleration.

Rated breaker current > (Rated motor power-supply capacity [VA] x 3 + Control power-supply capacity [VA])

/ Input voltage

Also, always use an earth leakage breaker of leak-current detection type specified for inverter, so that leak

current from servos can also be cut off.

[2] Surge absorber

The motor power supply and control power supply have no built-in surge absorber for protecting the

equipment from surge noise that may generate inside the controller in the event of lightening shock.

If you wish to enhance surge resistance, an external surge absorber must be installed.

Recommended surge absorber

Manufacturer Okaya Electric Industries

Model RAV-781BWZ-2A

[ [3] Noise filter

The motor power supply has no built-in noise filter. Accordingly, always install a noise filter for the motor-

drive power supply externally to the controller. A single noise filter may be used for both the motor power

supply and control power supply.

Note) Always install a noise filter.

Recommended noise filter

Manufacturer TDK Lambda

Model MC1210

AC power

supply

(Earth

leakage)

breaker

Surge

absorber

Noise filter

Control power input

Motor power input

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