Omron NX701-1620, User Manual

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4 Installation and Wiring
NX-series CPU Unit Hardware User’s Manual (W535)
4-4 Wiring
4
4-
4-2 Gro
unding
This section describes how to ground the CPU Rack.
 Power Supply Units
Power Supply Units NX-PA9001 and NX-PD7001
• Terminal Screws and Crimp Terminals
The terminals on the Power Supply Unit are M4, self-raising terminals with screws.
Use crimp terminals (M4) having the dimensions shown below. Tighten the terminal block screws to
the torque of 1.2 N·m.
4-4-2 Grounding
Units with Ground Terminals and Type of Ground Terminals
Termi-
nal
name
Grounding
type
Symbol Function
LG Functional
Grounding Functional grounding is done to protect device and system func-
tions, including prevention of noise from external sources, or pre-
vention of noise from devices or equipment that could have
harmful effects on other devices or equipment.
GR Protective
Grounding Protective grounding is done to ensure safety. It is intended to pre-
vent electrical shock by grounding the electrical potential that is
generated by factors such as leakage, induction, or failure.
L1
L2/N
PA9001
PWR
L1
L2/N
AC100-2
INPUT
RUN
OUTPUT
AC240V
DC24V
LG (Noise-filter neutral terminal)
GR (Ground terminal)
7 mm max. 7 mm max.