Yaskawa DR2 Sigma Servo User Manual

Page 154

Advertising
background image

3.8 Special Wiring

141

NOTE

Use a noise filter to prevent noise interference.
(For details, refer to the following Caution.)

• If the servo is to be used near private houses or

may receive noise interference, install a noise
filter on the input side of the power supply line.
Since this Servopack is designed as an indus-
trial device, it provides no mechanism to prevent
noise interference.

NOTE

To prevent malfunction due to noise, take the following actions:

• Position the input reference device and noise filter as close to the Servopack as pos-

sible.

• Always install a surge absorber circuit in the relay, solenoid and magnetic contactor

coils.

• The distance between a power line (such as a power supply line or motor cable) and a

signal line must be at least 30 cm (12 in). Do not put the power and signal lines in the
same duct or bundle them together.

• Do not share the power supply with an electric welder or electrical discharge machine.

When the Servopack is placed near a high-frequency oscillator, install a noise filter on
the input side of the power supply line.

Note a) Since Servopack uses high-speed switching elements, signal lines may re-

ceive noise. To prevent this, always take the above actions.

b) For details of grounding and noise filters, refer to 3.8.2 Wiring for Noise Con-

trol.

NOTE

Use a molded-case circuit breaker (MCCB) or fuse to protect the power supply line from high
voltage.

• This Servopack is directly connected to com-

mercial power supply without a transformer.
Always use an MCCB or fuse to protect the ser-
vo system from accidental high voltage.

• Select an appropriate MCCB or fuse according

to the Servopack capacity and the number of
Servopacks to be used as shown below.

3

Noise filter

MCCB

Advertising
This manual is related to the following products: