3-21
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
-CAWEjB Power Cable
is required. R88A
-CAWEjB Power Cable is used for wiring (2-core) the brake line only.
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)
NFB
AC power
supply
Surge absorber
Noise filter
Contactor
X1
Metal duct
Fuse
Class-3
ground (to
100 Ω or less)
Controller power supply
Thick power line (3.5 mm
2
)
Machine ground
Ground
plate
Ground control box
3.5 mm
2
2 mm
2
D R88D-WT05H to R88D-WT150H Servo Drivers (Three-phase Power Supply Input)
NFB
AC power
supply
Surge absorber
Noise filter
Contactor
X1
Metal duct
Fuse
Class-3
ground (to
100 Ω or less)
Controller power supply
Thick power line (3.5 mm
2
)
Machine ground
Ground
plate
Ground control box
3.5 mm
2
2 mm
2
• 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.
System Design and Installation
Chapter 3
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