Inovance IS810N-INT Series User Manual

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IS810N-INT Series Servo System User Manual (Brief) Chapter 4 Wiring
4.12 Anti-interference Measures for Electrical Wiring
Take the following measures to suppress interference:
• Ensure that the length of the reference input cable is below 3 m, and the length of the encoder
cable is below 20 m.
• Use a thick cable (above 2.0 mm2 in diameter) as the grounding cable.

D class (or higher class) grounding is recommended (grounding resistance is below 100 Ω).

Use single point grounding.
• Use a noise lter to prevent radio frequency interference. For home application or application
with noise interference, install the noise lter on the input side of the power cable.
• To prevent malfunction due to electromagnetic interference, take the following measures:

Install the host controller and noise lter as close to the servo drive as possible.

Install a surge absorber on the relay, solenoid and electromagnetic contactor coils.

The distance between a strong-current cable and a weak-current cable must be at least
30 cm. Do not put these cables in the same duct or bundle them together.

Do not connect the servo drive to the same power supply as an electric welder or
electrical discharge machine. When the servo drive is placed near a high-frequency
generator, install a noise lter on the input side of the power cable.
4.12.1 Anti-interference Wiring Example and Grounding
The servo drive uses high-speed switches in the main circuit. Switching noise from these
components may affect normal operation of the servo drive due to improper wiring or grounding.
Thus, the servo drive must be properly wired and grounded. A noise lter can be added if
necessary.
Anti-interference Wiring Example
Figure 4-30 Anti-interference wiring example
P
N
U
V
W
M
Encoder
signal
interface
Noise
filter
Servo drive
Grounding to earth
Grounding plate
Greater than
3.5 mm
2
Greater than
2.0 mm
2
Greater than
3.5 mm
2
PG
R
T
S
Power
supply
unit
NOTE
Use a cable of at least 3.5 mm2 thick as the grounding cable connected to the cabinet
housing. Plain stitch copper wires are recommended.
If a noise lter is used, observe the precautions as described in the “Using Noise Filter"
section.
2) Grounding
To prevent potential magnetic interference, conduct grounding correctly according to the
following instructions.
a) Grounding the motor housing
Connect the grounding terminal of the servo motor to the PE terminal of the servo drive and
ground the PE terminal.
b) Grounding the shield of the encoder cable
Ground both ends of the shield of the motor encoder cable.

Inovance IS810N-INT Series Specifications

General

Brand	Inovance
Model	IS810N-INT Series
Category	Servo Drives
Language	English