10-6
The EMC-compliant filter and the inverter should be connected with each other according to the procedure
given below. The wiring on the inverter and motor should be performed by an authorized electrical engineer. In
order to ensure compliance with the EMC Directive, this procedure should be followed as closely as possible.
Basic connection procedure
1) Install the inverter and the EMC-compliant filter on a grounded metal plate. Use a shielded cable also for
connection to the motor and make it as short as possible. Connect the shield layer of the cable firmly to the
metal plate. Also, at the motor side, connect the shield layer electrically to the grounding terminal of the
motor.
2) Use a shielded cable for connection of control circuit lines of the inverter and also for connection of the
signal cable of an RS-485 communications card. As with the motor, clamp the shield layer of the cable
firmly to a grounded plate.
3) If noise radiated from the inverter exceeds the level prescribed in the EMC Directive, enclose the inverter
and its peripherals (EMC-compliant filter) inside a metal enclosure as shown in Figure 10.3.
Figure 10.3 Installation of EMC-Compliant Filter (Option)
10.5.4 EMC-compliant environment and class
The table below lists the capacity and power supply voltage of the FRENIC-Eco and the EMC-compliant
environment.
Inverter capacity Power
supply
voltage
Standards
1HP to 100HP for 208V, 1HP to 125HP for 460V 125HP for 208V, 150HP to 350HP
Immunity EN61800-3 Second environment (Industrial environment)
3-phase
208 V
Emission EN61800-3 Second environment (Industrial environment)
Immunity EN61800-3 Second environment (Industrial environment)
3-phase
460 V
Emission
EN55011
Group 1 Class A
EN61800-3 Second environment
(Industrial environment) Note 1
Note 1: Wiring change for compliance
Changing the internal wiring makes EMC-compliant level (emission) be in conformity with Group 1 Class A. Refer to the
wiring procedures given on the following pages.
Before changing any internal wiring, turn OFF the power and wait more than five minutes for models of
30HP for 208V, 40HP for 460V or below, or ten minutes for models of 40HP for 208V, 50HP for 460V or
above. Make sure that the LED monitor and charging lamp (on models of 40HP for 208V, 50HP for 460V or
above) are turned OFF. Further, make sure, using a multimeter or a similar instrument, that the DC link bus
voltage between the terminals P (+) and N (-) has dropped below the safe voltage (+25 VDC).
Otherwise electric shock could occur.
FRENIC- Eco
L1/R
L2/S
L3/T
U
V
W
G
Power
supply
G
Motor
MCCB/
GFCI
*
Metal enc losure
Three-
phase
Shielded
cable
with overcurrent protection
M
3
Note
:
Connect the shield layer of the cable
electrically to the metal enclosure
and the motor and make sure that
both the metal enclosure and the
motor are grounded.
*
EMC-
compliant
filter
(optional)
G
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