Fuji Electric FRENIC-HVAC User Manual page 702

4) For connection to inverter's control terminals and for connection of the RS-485 communication
signal cable, use shielded wires. As with the motor, clamp the shields firmly to the specified point
or the grounded metal plate inside the inverter.
Clamp for control
signal lines
5) When connecting an EMC-compliant filter (option) to the inverter externally, mount the inverter
and the filter on a grounded panel or metal plate as shown in Figure 11.2-1. If radiation noise from
the inverter exceeds the permission level, enclose the inverter and its peripherals in a metal panel.
For the combination of the inverter and the filter, see Table 11.2-1.
MCCB or
RCD/ELCB*
Power
supply
Three-
phase
with overcurrent protection
*
Figure 11.2-1 Mounting the Inverter with EMC-compliant Filter in a Metal Panel
Figure 11.2 Wiring to Control Circuit Terminals
Metal panel
FRENIC-HVAC
L1/R
EMC-
compliant
L2/S
filter
(optional)
L3/T
G G
11-2
Note: Connect the shielding layer of
shielded cable to the motor and
panel electrically and ground the
motor and panel.
U
V
W
G
Shielded
cable
M
3
Motor