3-29
•
Noise filters and surge absorbers must be inserted in power supply lines.
•
Shielded cable must be used for I/O signal cables and encoder cables. (Use tinned soft steel wire.)
•
Cables leading out from the control box must be enclosed within metal ducts or conduits with blades.
(It is not necessary to enclose the 30-cm power cable, encoder cable, or connectors in a metal duct or
conduit.)
•
Ferrite cores must be installed for cables with braided shields, and the shield must be directly
grounded to a ground plate.
H
Wiring Method
AC
power
supply
Metal
duct or
conduit
Control box
2 m max.
Noise
filter
Brake
power
supply
Surge
absorber
Ground
plate
Controller
power
supply
Controller
Clamp
Ferrite core
Clamp
Metal
duct or
conduit
Motor built-in device
Ferrite
core
Contactor
Class-3
ground (to
100
Ω
or less)
Ferrite
core
Ferrite
core
Ferrite
core
Ferrite core
2 m max.
Noise
filter
Note 1.
Make 1.5 turns for the ferrite core’s cable winding.
Note 2.
Peel the insulation off the cable at the clamp, and directly connect the shield to the metal plate.
Note 3.
For single-phase power supply input models (R88D-WTA3H
j
to R88D-WT04H), the main-
circuit power supply input terminals will be L1 and L2. For single-phase powersupply models
(R88D--WT08HH and R88D-WT15HH), the main circuit powersupply will be L1 and L3
•
Ground the motor’s frame to the machine ground when the motor is on a movable shaft.
•
Use a grounding plate for the frame ground for each Unit, as shown in the above diagrams, and ground
to a single point.
•
Use ground lines with a minimum thickness of 3.5 mm
2
, and arrange the wiring so that the ground lines
are as short as possible.
•
If no-fuse breakers are installed at the top and the power supply line is wired from the lower duct, use
metal tubes for wiring and make sure that there is adequate distance between the input lines and the
internal wiring. If input and output lines are wired together, noise resistance will decrease.
•
No-fuse breakers, surge absorbers, and noise filters should be positioned near the input terminal
block (ground plate), and I/O lines should be isolated and wired using the shortest distance possible.
System Design and Installation
Chapter 3
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : [email protected]
