Rockwell Automation 2711P-RDT12H High-bright Display Module - Manual (Page 17)

High-bright Display Modules 17
Publication 2711P-IN026E-EN-P - September 2008
Earth/Ground Connection
PanelView Plus devices with a DC power input have an earth/ground terminal that
you must connect to a low-impedance earth/ground. The earth/ground connection
is on the rear of the display module.
The earth/ground terminal requires a minimum wire gauge.
On most PanelView Plus devices, the earth/ground terminal is internally connected
to the DC- terminal within the product.
The PanelView Plus devices have isolated and nonisolated communication ports.
For more information refer to the PanelView Plus Terminals User Manual,
publication
2711P-UM001 .
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. This connection is required for safety
by Underwriters Laboratory.
Earth/Ground Wire Specifications for DC Power
Attribute Value
Symbol
GND
Wire Type Stranded or solid, Cu 90 °C (194 °F)
Wire Gauge 14…10 AWG
Terminal Screw Torque 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.