Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 47)

Publication 1753-UM001C-EN-P - March 2010 47
General Wiring Considerations Chapter 3
GuardPLC 1600 and GuardPLC 1800 Controllers and Distributed I/O
The I/O module is functionally grounded through its DIN rail
connection. A protective earth ground connection is required and is
provided by a separate grounding screw, located on the upper left of
the housing and marked with the grounding symbol
.
GuardPLC 2000 Chassis
Ground the GuardPLC 2000 chassis and cables by using the grounding
screw located on the left side of the grounding grill. Ground the
chassis via the grounding grill.
Terminal Connections
Terminals accommodate wire sizes up to 1.5 mm
2
(16 AWG) for
input/output wiring and up to 2.5 mm
2
(14 AWG) for voltage supply
connections.
ATTENTION
This product is grounded through the DIN rail to chassis ground.
Use zinc plated yellow-chromate steel DIN rail to assure proper
grounding. The use of other DIN rail materials (for example,
aluminum and plastic) that can corrode, oxidize, or are poor
conductors, can result in improper or intermittent grounding.
CPU DIO AI AO CO PS DIO CO
Grounding Screw
Grounding Grill