Controls Interface; Unit Controller - General; Unit Controller  Software Installation And Setup - Trane Cold Generator CG-SVX044F-EN Installation, Operation And Maintenance Manual

Controls Interface

Unit Controller — General
The CICD controller is a rugged microprocessor-based
controller designed for the hostile environment of the HVAC/R
industry. It is designed to be the primary manager of the CICD
product.
The controller provides flexibility with setpoints and control
options that can be selected prior to commissioning a system
or when the unit is live and functioning. Unit display presents
pressure, temperature and alarm information with history in a
clear and simple language format, informing the user of the
chiller status. See wiring diagram in the wiring section of this
manual ("Wiring," p. 42) and attached to the inside of the
control panel door.
A password is required to access chiller setpoints. Use
password code 2112 to access many of these features. A
factory code may be required to allow access to critical areas,
and can only be entered by a factory representative.
An RS-485 port is provided for communication with other
manufacturers' systems.
Additionally, a built-in RS-485 to RS-232 converter allows
communication over the RS-485 network via the RS-232 port.
Other features include the integration of BACnet IP
®
MODBUS into the unit controller. Optional communication
cards are available for communication via L
Johnson N2 and BACnet MS/TP
the chiller if required. An ethernet connection is also provided
on each unit. While field changes can be made, please ensure
that the unit is ordered set up for required communications to
ensure that factory testing includes end user configuration.
A complete software support package is available for your PC
allowing for system configuration, dynamic on-line display
screens, remote communication, graphing and more.
Downloads for the MCS-Connect software are available at
www.mcscontrols.com at no charge. See
Installing Unit Controller (MCS-Connect) Software," p. 33
download instructions. All information needed to run the unit is
available from the unit display; however, a laptop computer is
invaluable for ease of use of diagnosing or changing the unit
setpoints.
Note: Not all setpoints can be changed with MCS-Connect;
some require a configuration change.
A serial cable is included in each shipment for the convenience
of the field technician. If you do not have a laptop with a serial
port, you will require a converter such as a Black Box item
number #IC199A-R3 serial-to-USB adaptor.
The CICD standard configuration allows for the unit to start at
the lowest stage possible, and then add compressors as
needed to meet demand.
Important: All configuration changes need to be done by
factory representatives to ensure proper
operation of the unit within design parameters.
See CG-SVX030*-EN controller manual for
sequence of operation and additional details.
CG-SVX044F-EN
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Unit Controller 
Software Installation and Setup
Downloading and Installing Unit
Controller (MCS-Connect) Software
Go to www.mcscontrols.com.
Go to the software page and select MCS-CONNECT. Select
SAVE. After downloading, open and select RUN. Follow
prompts and software will be installed on your computer.
If your computer does not have a serial port, you will need to
purchase a USB to Serial adapter. (Computer stores should
have this.) Install the software for the adapter. If your computer
has a serial port, you will not need an adapter.
Start the MCS-CONNECT software. Select
SETUP>COMMUNICATIONS and then change LOCAL COM
PORT to match your computer. Select SAVE and then OK.
Connecting to the Chiller
Connect the supplied NULL MODEM cable between your USB
adapter or serial port to the chiller. A standard serial cable will
not work.
Connection directly through the 100 MBPS Ethernet port on
the CICD unit controller or array controller to a PC requires a
crossover Ethernet cable. If all controllers in the array are
connected to an Ethernet switch, then an Ethernet patch
(straight) cable will be used to connect the PC to the Ethernet
switch.
Start the MCS-CONNECT software and select LOCAL
SERIAL. The site info page will appear. The software should
scan and find the chiller. (If you see a Failed to open comm port
error, or it scans and does not find the chiller, your comm port
settings are not correct.) Click the tab next to the "Site Info" tab.
The screen shows real time data.
Setpoint Changes
Click the VIEW ONLY button. Enter the password code 2112.
Select OK. Button should say SERVICE. Go to setpoints and
double-click on a value. Change and select OK.
Viewing and Troubleshooting ALARMS
The unit controller will record and store 120 seconds of sensor
input data prior to and up to any LOCKOUT ALARM. Select the
ALARM tab, then INFO next to the alarm you want to analyze.
This will pop up a screen that shows operating conditions just
prior to the trip allowing the user to determine if the fault was
caused by a sudden or gradual change. For instance, a sudden
increase in discharge pressure might suggest a condenser
pump or fan failure etc. (This data can also be viewed from the
chiller LCD screen. Select LOCKOUT ALARMS.)
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