Specifications

Chapter 4 Installing the HA-655 driver
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4-3-3 Installing
The HA-655 driver should be mounted on a
wall as shown in the figure to the right.
Two mounting holes are provided on the back
of the driver. The thickness of the wall should
be more than 2mm.
● Procedure
(1) Screw an M4 machine screw in the
tapped hole on the wall.
(2) Put the lower mounting hole (cut hole)
of the back of the driver on the M4
screw.
(3) Screw tightly through the upper mounting hole with M4 screws.
(4) Tighten the lower M4 screw.
4-4 Suppressing noise
The HA-655 driver employs an IPM (power module) with a PWM control for main circuit. As the IPM
generates switching noise by high-speed power switching, the noise may cause incorrect motion of
other equipment or radio noise interference due to poor cabling or poor grounding.
In addition, it is necessary to provide proper cable management in order to suppress incorrect motion of
the HA-655 driver by external noise from hosts, which contain electronic components, such as a CPU.
To prevent troubles by noise emissions always install cabling and grounding as follows:
4-4-1 Devices for grounding
Refer to the figure below when grounding all devices of the system.
Note 1: For the grounding line filters refer to [4-4-2 installing noise filter].
HD
Noise
Filter
Power
Trans-
former
Noise
Filter
Power
Trans-
former
Noise
Filter
Ground
Customer’s signal
generating devices as a
program logic controller
CN2
E
M
Note1
Note1
R
S
T
U
V
W
CN
1
HA
-
655
3.5mm
2
or thicker
Grounding to the earth
One-point-grounding is
essential.
3.5mm
2
or thicker
Servo Actuator
Power Supply
3-phases
Noise
Filter
r
s
Note1
3.5mm
2
or thicker
Wall
5
5