External power for isolated dc terminals, Earth/ground connection – Rockwell Automation 2711PC-T10C4D1 PanelView Plus Terminals and Display Modules User Manual

Page 18

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18 PanelView Plus 700 to 1500 and PanelView Plus Compact 1000 Terminals and Display Modules

Publication 2711P-IN001I-EN-P - November 2009

External Power for Isolated DC Terminals

Use an SELV or PELV 24V DC power supply, such as catalog number 2711P-RSACDIN, to
power the isolated DC PanelView Plus terminal.

The isolated DC terminals may be powered by the same power source as other equipment.

Earth/Ground Connection

PanelView Plus devices with a DC power input have a 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 non-isolated communication ports.
For more information refer to the PanelView Plus Terminals User Manual, publication

2711P-UM001

.

TIP

Isolated DC logic modules are identified by catalog number 2711P-RPxDx.

ATTENTION

Use an SELV or PELV supply as required by local wiring codes for your installation. The
SELV and PELV power sources provide protection so that under normal and single fault
conditions, the voltage between conductors and earth ground does not exceed a safe
value.

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

Symbol

Wire Type

Wire Gauge

Terminal Screw Torque

GND

Stranded or solid

Cu 90 °C (194 °F)

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.

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