Rockwell Automation 2711PC- T6C20D, User Manual

Page: 27 / 132

Publication 2711PC-UM001A-EN-P - March 2009 27
Connecting Power Chapter 3
Earth/Ground Connection
You must connect the earth/ground terminal to a low-impedance
earth/ground.
•
The 1000 terminals have the earth/ground connection on the
rear of the display module.
•
The 400 and 600 terminals have the functional earth/ground
connection on the power input terminal block.
The earth terminal requires a minimum wire gauge.
Earth Wire Specifications
On most PanelView Plus DC terminals, the earth/ground terminal is
internally connected to the DC- terminal within the product.
The PanelView Plus terminals have isolated and nonisolated
communication ports. Refer to
Communication Port Isolation page 88
for details.
IMPORTANT
The earth/ground connection to ground is mandatory. This
connection is required for noise immunity, reliability, and
Electromagnetic Compliance (EMC) with the European Union
(EU) EMC directive for CE-mark conformance and is required for
safety by Underwriters Laboratory.
Terminal Symbol Wire Type Wire Gauge Terminal Screw Torque
400 and 600
Stranded or solid Cu 90 °C (194 °F)
14…12 AWG
0.45…0.56 N•m (4…5 lb•in)
1000
GND
14…10 AWG 1.13…1.36 N•m (10…12 lb•in)
ATTENTION
Damage or malfunction can occur when a voltage potential
exists between two separate ground points. Make sure the
terminal does not serve as a conductive path between ground
points at different potentials.
IMPORTANT
For more information, refer to Wiring and Grounding Guidelines
for PanelView Plus Devices, publication
2711P-TD001 .