APPENDIX
Document Part # 026-4909 Rev 0 11-NOV-2010 Page 1 of 12
©2010 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
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Installation Instructions: XJ Scroll Condenser to E2
Overview
Copeland XJ Scroll Condenser Units are used for walk-in cooler and freezer applications. All units inte-
grate the many benefits of scroll compressor technology, fan speed control, and Copeland Performan-
ceAlert™ diagnostic controls.
E2 communicates with the Copeland XJ Scroll Condenser One-way Communication Board via the
RS485 MODBUS network. The E2 is used to receive alarm and notice status from the XJ Scroll condens-
ers via the One-way Communication board. If the XJ Scroll condenser does not have a One-way Commu-
nication Board, one must be installed for E2 alarm and notice receiving. The E2 then provides the ability
to assign delays and priorities to alarms or notices, but the alarms and notices can be logged in the E2.
Maximum Number of XJ Scroll units per E2:
Network Wiring and Configuration
XJ Scroll Condensers connect to the E2 with the One-Way Communication Board using RS485 MOD-
BUS.
E2 Model/Series
100
300 400
RX 4 8 16
CX 4 8 16
Table 1 - E2 Models
Figure 1 - XJ Scroll Connected to a One-Way Communication Board
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