4
© 2011 Emerson Climate Technologies
Printed in the U.S.A.
AE8-1384 R1
Application Engineering
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INTRODUCTION
Overview
CoreSense
™
Communications is a breakthrough
innovation for 20 to 40 ton Copeland Scroll
™
air conditioning compressors. The CoreSense
Communications module, installed in the compressor
electrical box, provides advanced diagnostics,
protection, and communications that enhance
compressor 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
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
fi
eld retro
fi
ts for other motor protection
modules that may have been previously used with
Copeland Scroll compressors. The motor and scroll
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-T
E
D.
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
.
Agency Recognition
CoreSense Communications carries the following
agency recognitions:
U.L.
fi
le E253322, Volume 7, Software Class B
CB Test Certi
fi
cate
Product Speci
fi
cations
CoreSense speci
fi
cations are shown in
Table 2
. Many of
the electrical specifcations 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
Always disconnect and lockout the power supply
before removing the compressor electrical box
cover for servicing.
Terminal Description and Basic Field Wiring
Figure 1
shows the CoreSense Communications
module and
Figure 2
illustrates the required OEM/
fi
eld
wiring.
Figure 3
is the terminal box wiring diagram. 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.
