Wiring For Noise Resistance - Omron R88M-W User Manual

System Design and Installation
Note 2. For Servomotors with brakes, there are separate connectors for power and brakes. There-
fore, whenever a Servomotor with a brake is used, a separate R88A
is required. R88A

3-2-4 Wiring for Noise Resistance

System noise resistance will vary greatly depending on the wiring method used. This
section explains how to reduce noise through proper wiring.
H Wiring Method
D R88D-WTA3Hj to R88D-WT04H Servo Drivers (Single-phase Power Supply Input)
AC power
NFB
supply
Fuse
2
3.5 mm
Class-3
ground (to
100 Ω or less)
Ground
plate
Ground control box
D R88D-WT05H to R88D-WT150H Servo Drivers (Three-phase Power Supply Input)
AC power
NFB
supply
Surge absorber
Fuse
2
3.5 mm
Class-3
ground (to
100 Ω or less)
Ground
plate Ground control box
• 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.
-
CAWEjB Power Cable is used for wiring (2-core) the brake line only.
Noise filter
Surge absorber
Controller power supply
Noise filter
Controller power supply
Contactor
X1
2
2 mm
Contactor
X1
2
2 mm
Chapter 3
-
CAWEjB Power Cable
Metal duct
2
Thick power line (3.5 mm )
Machine ground
Metal duct
2
Thick power line (3.5 mm )
Machine ground
3-21