42
Instruction Booklet
IB156002EN
Effective January 2022
Eaton HCU2/HCUn active harmonic
filter installation manual
EATON
www.eaton.com
Figure 50 . Chassis to HMI/front panel connections
LED light
pipe socket
(D404)
HMI COM1
connection
RJ45 J9
HMI 24 Vdc
power
connection
J12
USB to
front
To control
board J9
To power supply
board J12
To customer’s Ethernet
for Modbus TCP/IP
Figure 51 . Control board and CT board detail
J2
Figure 52 . Control board J2 detail
Control Board
Com Q1 Q2 Q3 Q4 GND I1 I2 I3 I4
Dry Contact Output
Digital Input Control