Oriental motor BLE Series - 6.11 Installing for EMC Directive Compliance; Mains Filter, Power Lines, and Grounding

Installation
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23
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6.11 Installing and wiring in compliance with EMC Directive
The
BLE
Series is designed and manufactured for use as an internal component of equipment. The EMC Directive
require that your mechanical equipment in which the
BLE
Series is installed satisfy the applicable requirements.
The installation/wiring methods of the motor and driver explained here represent the basic methods that are effective
in helping your mechanical equipment conform to the EMC Directive.
The nal level of conformance of your mechanical equipment to the EMC Directive will vary depending on the
control system equipment used with the motor/driver, conguration of electrical parts, wiring, layout, hazard level,
and the like. Therefore, you must conduct the EMC tests on your mechanical equipment to conrm compliance.
Without effective measures to suppress the electromagnetic interference (EMI) caused by the
BLE
Series in the
surrounding control system equipment or the electromagnetic spectrum (EMS) generated by the
BLE
Series, the
function of your mechanical equipment may be seriously affected.
The
BLE
Series will conform to the EMC Directive if installed/wired using the methods specied below.

Connecting a mains lter
Install a mains lter in the power line in order to prevent the noise generated within the driver from propagating
outside via the AC input line. For mains lters, use the products as shown in the chart, or an equivalent.
Manufacturer
Single-phase 100-120 V
Single-phase 200-240 V
Three-phase 200-240 V
SOSHIN ELECTRIC CO., LTD HF2010A-UPF HF3010C-SZA
Schaffner EMC FN2070-10-06 FN3025HP-10-71
Overvoltage category II applies to mains lters.
Install the mains lter as close to the driver as possible, and use cable clamps and other means to secure the input and
output cables rmly to the surface of the enclosure. Connect the ground terminal of the mains lter to the grounding
point, using as thick and short a wire as possible.
Do not place the AC input cable (AWG18 to 14: 0.75 to 2.0 mm
2
) parallel with the mains-lter output cable (AWG18
to 14: 0.75 to 2.0 mm
2
). Parallel placement will reduce mains lter effectiveness if the enclosure’s internal noise is
directly coupled to the power supply cable by means of stray capacitance.

Connecting the AC power line reactor
When inputting single-phase 200-240 V, insert a reactor (5 A, 5 mH) in the AC power line to ensure compliance with
EN 61000-3-2.

Connecting the control power supply
Use a control power supply conforming to the EMC Directive. Use a shielded cable for wiring and wire/ground the
control power supply over the shortest possible distance. Refer to “Wiring the power supply cable” for how to ground
the shielded cable.

Grounding procedure
The cable used to ground the motor, driver, mains lter and power supply cable (shielded cable) must be as thick
and short to the grounding point as possible so that no potential difference is generated. Choose a large, thick and
uniformly conductive surface for the grounding point. Refer to the p.26 for the recommended grounding method.

Wiring the power supply cable
Use a shielded cable of AWG18 to 14 (0.75 to 2.0 mm
2
) in diameter for the driver power supply cable and keep it as
short as possible.
Strip a part of the shielded cable and ground the stripped part using a metal cable clamp that contacts the stripped
cable around its entire circumference, or use a drain wire to make the
ground connection.
When grounding the shielded cable, connect both ends (mains lter
side and power supply side) to earth to prevent a potential difference
from generating in the shielded cable.
Shielded cable
Cable clamp