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Earth/ground connection – Rockwell Automation 2711P-xxxx PanelView Plus 6 Terminals User Manual User Manual

Page 39

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Rockwell Automation Publication 2711P-UM006C-EN-P - April 2013

39

Install Terminal

Chapter 2

PanelView Plus 6 devices were tested to operate with the catalog number
2711P-RSACDIN power supply. To use another power supply, review the
criteria in the table.

Earth/Ground Connection

PanelView Plus 6 devices with a DC power input have an earth/ground terminal
that you must connect to a low-impedance earth/ground.

On 400 and 600 terminals, the earth/ground connection is on the power

terminal block.

On 700 to 1500 terminals, the earth/ground connection is on the rear of

the display module.

Table 38 - Power Supply Criteria

If the PanelView Plus 6 Device

Use a

Description

Connects to equipment with isolated
communication ports

SELV or PELV power supply

Other equipment can share this power
supply with the PanelView Plus 6 device
provided that no ground loops are created.
A PELV source internally connects the
negative power terminal to chassis ground.

Does not connect to other equipment

Connects to equipment with non-
isolated communication ports

Dedicated, isolated, and
ungrounded SELV source to
power each terminal

This prevents ground loops from damaging
the device.

IMPORTANT

All of the communication ports on the terminals and supported
communication modules are isolated, with the exception of the USB ports.

IMPORTANT

The earth/ground connection to ground is mandatory. This connection is
required for the following:

Noise immunity, reliability, and Electromagnetic Compliance (EMC) with

the European Union (EU) EMC directive for CE-mark conformance

Safety by Underwriters Laboratory

Table 39 - Earth Wire Specifications for DC Power

Terminal

Symbol

Wire Type

Wire Gauge

Terminal Screw Torque

400, 600

GND

Stranded or solid
Cu 90 °C (194 °F)

2.1…3.3 mm

2

(14…12 AWG)

0.45…0.56 N•m
(4…5 lb•in)

700 to 1500

GND

Stranded or solid
Cu 90 °C (194 °F)

2.1…5.3 mm

2

(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.