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2 Installation
2 Installation
2.1 Installing and wiring in compliance with EMC Directive
Effective measures must be taken against the EMI that the actuator and driver may give to adjacent control-
system equipment, as well as the EMS of the actuator and driver itself, in order to prevent a serious functional
impediment in the machinery. The use of the following installation and wiring methods will enable the actuator
and driver to be compliant with the EMC directive. Refer to “CE Marking” on p.12 for the applicable standards.
Oriental Motor conducts EMC measurements on its actuator and driver in accordance with “Example of
actuator and driver installation and wiring” on p.15. The user is responsible for ensuring the machine’s
compliance with the EMC Directive, based on the installation and wiring explained below.
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Connecting the power supply
Use a DC power supply compliant with the EMC Directive.
Use a shielded cable for wiring and wire/ground the power supply over the shortest possible distance.
Refer to "Wiring the power supply cable and I/O signal cable" for how to ground the shielded cable.
■
Connecting noise fi lter for power supply line
•
Connect a noise fi lter in the DC power supply input to prevent the noise generated in the driver from
propagating externally through the power supply line.
•
When using a power supply transformer, be sure to connect a noise fi lter to the AC input side of the
power supply transformer.
•
For a noise fi lter, use HF2010A (SOSHIN ELECTRIC CO.,LTD), FN2070-10-06 (Schaffner EMC) or
equivalent product.
•
Install the noise fi lter as close to the AC input terminal of DC power supply as possible. Use cable
clamps and other means to secure the AC input cables (AWG18: 0.75 mm
2
or more) and output cables
(AWG18: 0.75 mm
2
or more) fi rmly to the surface of the enclosure.
•
Connect the ground terminal of the noise fi lter to the grounding point, using as thick and short a wire as possible.
•
Do not place the AC input cable (AWG18: 0.75 mm
2
or more) parallel with the noise fi lter output
cable (AWG18: 0.75 mm
2
or more). Parallel placement may cause the enclosure's internal noise to
be directly coupled to the power supply cable by means of stray capacitance, which may result in a
reduction in noise fi lter effectiveness.
■
How to ground
The cable used to ground the driver and noise fi lter must be as thick and short as possible so that no potential
difference is generated. Choose a large, thick and uniformly conductive surface for the grounding point.
■
Wiring the power supply cable and I/O signal cable
•
Use a shielded cable of AWG22 (0.3 mm
2
) or more for the power supply cable, and keep it as short as possible.
•
Use a shielded cable for the I/O signal cable, and keep it as short as possible.
•
To ground a shielded cable, use a metal cable clamp or similar device that will maintain contact with
the entire circumference of the cable. Attach a cable clamp as close to the end of the cable as possible,
and connect it as shown in the fi gure.
Cable clamp
Shielded cable
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