Introduction; Overview; Features; Application Usage - Emerson CoreSense Application Engineering Bulletin

INTRODUCTION

Overview

Communications
CoreSense™
innovation for 20 to 40
conditioning compressors.
Communications module, installed in the compressor
electrical box, provides advanced diagnostics, protection,
and communications
performance and reliability.

Features

CoreSense Communications has the following key
features:
1. Motor temperature protection
2. Scroll high temperature protection
3. Missing phase protection
4. Reverse phase protection
5. Low control circuit voltage protection
6. Short cycling detection and alert
7. Communication to system controller through
RS485/Modbus
8. Storage of operational history, runtime information,
fault counters, etc.
9. Display of status, warning, and alert information
via LEDs
CoreSense Communications provides compressor and
system protection through its proprietary lockout feature.
Depending on the severity and frequency of the fault that
caused the trip condition, the CoreSense Communications
module can lockout the compressor contactor to prevent
damage to the compressor and system components. Less
severe fault conditions resulting in an occasional trip will
not result in a lockout condition.
Flashing red and green LEDs communicate Status,
Warning, and Alert codes to the service technician and
the master controller.

Application Usage

WARNING
WARNING
CoreSense Communications modules are not
interchangeable with any other brand of motor
protection module that may have been previously
used with Copeland Scroll compressors.
CoreSense Communications modules are not intended
to be used as field retrofits for other motor protection
modules that may have been previously used with
Copeland Scroll compressors. The motor and scroll
© 2018 Emerson Climate Technologies, Inc.
is a breakthrough
ton Copeland Scroll™ air
The CoreSense
that enhance compressor
thermistor circuits are configured differently for Copeland
Scroll with CoreSense Communications and are not
compatible with motor protection modules that were
previously used.
Copeland Scroll compressors equipped with CoreSense
Communications will have an "E" in the electrical code. An
example is the 40-ton scroll, ZP485KCE-TED.
Module Part Numbers
OEM and service compressors will have the CoreSense
Communications module installed in the compressor
electrical box. Individually packaged modules are
available to the aftermarket for component replacement.
Part numbers for OEM and service applications are listed
in Table 1 at the end of this bulletin.

Agency Recognition

CoreSense Communications carries the following agency
recognitions:
U.L. file E253322, Volume 7, Software Class B
CB Test Certificate

Product Specifications

CoreSense specifications are shown in Table 2. Many
of the electrical specifications are the same as previously
used electronic motor protection modules.
INSTALLATION
Mounting
As mentioned above, CoreSense Communications will
be shipped already installed in the compressor electrical
box. Two holding tabs secure the module in the box. To
remove the module depress the holding tabs and remove
the module.
WARNING
WARNING
Always disconnect and lockout the power supply
before removing the compressor electrical box cover
for servicing.

Terminal Description and Basic Field Wiring

Figure 2 at the end of this bulletin shows the CoreSense
Communications module. Figures 1a and 1b are the
terminal box wiring diagrams. An explanation of the
terminal designations follows:
T2-T1: Module power supply, 24 or 120/240 VAC.
L1-L2-L3: Phase inputs corresponding to compressor
input power L1-L2-L3.
4
PRELIMINARY
AEX-XXXX
AE8-1384 R6