Specifications

19
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE8-1368 R2
The screen will display each of the related events in
a table format with an indication of whether the event
has occurred. The columns labeled 1 through 8 at
the top represent days of the week with number 1
being the current day of operation. In addition, the
count column serves as a running counter of each
alarm since the device has been commissioned. In
the event that a compressor needs to be replaced,
this history information will be zeroed when a new
control module is connected.
5.0 Stand-Alone Installation and Operation
A Stand-Alone control confi guration has been
established to allow control of the compressor
contactor and unloader(s) in a condensing unit or
other application when the network mode is not used.
Control of the contactor and unloader is through a
24 volt AC signal supplied to spare leads inside the
terminal box.
Please refer to Figure 5.1 of the wiring diagram that
shows the 24 volt power supply and the stand-alone
input connections. It is important that the 24 volt signal
to the input leads comes from the same leg of the
transformer as the left-hand side sensor module power
lead. There is no danger or risk of electrical damage if
the input comes off of the other transformer leg, but the
input demands will not function.
Note that the dipswitch settings must be set for “Stand
Alone” control. Dipswitch #9 must be “down” to enable
stand alone input. Note that a change in the dipswitch
position will not be seen by the control module unless
the “reset” button has been pushed after the dipswitch
is repositioned.
• A 24 volt signal to the demand input will turn the
compressor “on”.
• A 24 volt signal to the unloader will energize
the unloader (energizing the unloader reduces
compressor capacity.)
• Failsafe operation is not enabled when in stand-
alone mode.
Stand-alone operation may be enabled for service
reasons even if a communication network is used.
Communication of information is not affected by
operation in the stand-alone mode. To convert back to
Network mode, the reset button must be pushed for the
control module to recognize the new dipswitch position.
6.0 Compressor Status Codes
The CoreSense Diagnostics control module has a LED
& LCD to display the compressor status. The bicolor
LED provides basic diagnostics to aid in troubleshooting
of the system or compressor.
• Steady Green: An indication of normal operation.
There are no faults or issues with the compressor.
Figure 5.1
Stand-Alone Input Power Supply
24V Power Black
24V Power White
Unloader 1 input Yellow
Demand input Orange
Unloader 2 input Violet
Class II 24
VAC Power
Supply
Terminal Box
t
o
Harness to
Control
Module
●●
●
Demand (on-off) and
Unloaders are from the
Power Leg that Connects
to the Connector Tab on
the Left Side