Eaton NRX Series Installation Instructions Manual

Instructional Leaflet
Installation instructions for Series NRX
Modbus communications adapter
module (MCAM)
Instructions apply to:
Series NRX, Type NF Frame
ANSI, UL1066, UL489/IEC IZMX16, IZM91
1600 NRX SUB-TITLE IMAGE (12/15/2010)  WARNING
(1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE
PERMITTED TO WORK ON THE EQUIPMENT.
(2) ALWAYS DE-ENERGIZE PRIMARY AND SECONDARY CIRCUITS
IF A CIRCUIT BREAKER CANNOT BE REMOVED TO A SAFE WORK
LOCATION.
(3) DRAWOUT CIRCUIT BREAKERS SHOULD BE LEVERED (RACKED)
OUT TO THE DISCONNECT POSITION.
(4) ALL CIRCUIT BREAKERS SHOULD BE SWITCHED TO THE OFF
POSITION AND MECHANISM SPRINGS DISCHARGED. FAILURE TO
FOLLOW THESE STEPS FOR ALL PROCEDURES DESCRIBED IN THIS
INSTRUCTION LEAFLET COULD RESULT IN DEATH, BODILY INJURY,
OR PROPERTY DAMAGE.
 WARNING
THE INSTRUCTIONS CONTAINED IN THIS IL AND ON PRODUCT
LABELS HAVE TO BE FOLLOWED. OBSERVE THE FIVE SAFETY RULES:
– DISCONNECTING
– ENSURE THAT DEVICES CANNOT BE
ACCIDENTALLY RESTARTED
– VERIFY ISOLATION FROM THE SUPPLY
– EARTHING AND SHORT-CIRCUITING
– COVERING OR PROVIDING BARRIERS TO
ADJACENT LIVE PARTS
DISCONNECT THE EQUIPMENT FROM THE SUPPLY. USE ONLY
AUTHORIZED SPARE PARTS IN THE REPAIR OF THE EQUIPMENT.
THE SPECIFIED MAINTENANCE INTERVALS AS WELL AS THE
INSTRUCTIONS FOR REPAIR AND EXCHANGE MUST BE STRICTLY
ADHERED TO PREVENT INJURY TO PERSONNEL AND DAMAGE TO
THE SWITCHBOARD.
IL01301034E
Effective December 2010
Supersedes March 2010
IL01301034EH02
Series NRX, Type RF Frame
IEC, IZMX40
4000 NRX RF DRAWOUT SUBTITLE IMAGE (12/15/2010)

Section 1: General information

The Series NRXE ModbusT communications adapter mod-
ule (MCAM) (Figure 1) is an accessory that will operate as
a communicating device in conjunction with a compatible
Series NRX trip unit/breaker in a master communications
network (Figure 2).
The Modbus adapter communicates to a master on a
Modbus network using the Modbus RTU (remote terminal
unit) protocol. Information is exchanged through the MCAM
between the Modbus master and the Digitrip unit using
assigned registers.
Figure 1. Series NRX Modbus Communications Adapter
Module