SMC Networks HRW002-H, Operation Manual

Page: 31 / 88

HRX-OM-K003
Chapter 3 Transporting and Installation
HRW Series 3.3 Procedure for Installation
3-7
3.3.3 Wiring installation

Power cable
The power cables are to be prepared under your responsibility, referring to the
following table.
Table 3-1 Power Cable and Main Breaker (This System)
Item Type
Po
wer
c
a
b
le
Size (recommended) 10AWG

4-conductor
Crimp contact
(recommended)
Breaker R5.5-8
Earth bar R5.5-8
Torque
(recommended)
Breaker 1
2.5N•m (1.84 ft-lbf)
Earth bar
12.5N•m (9.22 ft-lbf)
Main breaker (This System) 30A

Communication connector
The communication connectors are to be prepared under your responsibility,
referring to the following table.
Table 3-2 Communication Connector
Connector Type (for your system)
Contact signal (P1 connector) D-Sub 25-pin (male)
Serial RS-485 (P2 connector) D-Sub 9-pin (male)

Only designated personnel are allowed to install wiring.

Be sure to turn OFF the power prior to wiring to assure safety.
Do not do any wiring when the system is energized.

The system wiring requires not only a thorough connection with the
designated cable but also securing to prevent loose connection. Poor
connection and securing may cause electric shock, heat sports, fire or
communication errors.

Be sure to supply the power to this system according to specifications.

Supply pure AC power. Potential malfunction may occur if a rectified AC
with voltage rise (dv/dt)
at zero crossing exceeds 40V /200µ sec.

Always establish a connection to a ground for safety.

Be sure that no ground connection is made to
a water pipe, gas pipe and lighting rod.
V
dV
dt
dt
= Voltage ratio
on zero-cross point
dV
t
Voltage rise %
Time
Voltage