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Controls Interface
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.)
Downloading and Viewing Graphs
The unit controller continuously records and stores sensor
input and relay/analog output data. This data is collected
in 10-second (default) intervals. The controller stores 1008
packets of data replacing the oldest with the newest. With
the time interval set at 10 seconds, graph data can be
downloaded with a time span of 168 minutes. The time
interval is adjustable.
In the MCS-CONNECT software, select GRAPH. Data will
be downloaded and then a graph setup page will appear.
Select the input and output data to be viewed. Type in Y-
axis parameters and select OK. Use the scroll bar at the
bottom of the graph to view. Return to the setup page at
any time to change selections. The graph may be saved.
The saved graph will be located in a folder called GRAPH
inside another folder called MCS on the C: drive.
To change the default 10-second interval, make changes
and select SAVE and then OK on the setup page. The
controller will now record data at this new interval.
To view a saved graph, select LOAD A GRAPH FILE. These
files can be e-mailed for analysis if needed.
Updating Chiller Software and
Configuration Files
CICD chillers are programmed, set up, and tested prior to
shipment. Sometimes after a unit arrives at the jobsite, the
customer may want to enable an option such as 0–5 Vdc
target reset, etc. These options require a configuration
change. The configuration file must be downloaded and
electronically sent to the factory for the changes to be
made or the factory may modify a default configuration
file and electronically send the modified default
configuration to the customer. Modifying a configuration
file will save any setpoint changes that have been made on
site. Otherwise, the controller will be set back to default
factory settings.
To e-mail a copy of the chiller's configuration file, in the
MCS-CONNECT software, establish communication with
the chiller and select RECEIVE CFG.
Name it "Unit (serial number)" and e-mail to
engineering@nappstech.com.
To load a configuration file, turn off circuit enable switches
and select TRANSMIT CFG. Locate the new file and press
OPEN. The file will be uploaded to the controller. The
controller will reboot itself.
Routine software (HEX FILE) updates are NOT necessary.
However, if a software update is necessary to resolve an
operating issue, a hex file in a zipped folder will be
34
provided. Save the zipped folder to the computer's
desktop. Right click folder and select EXTRACT ALL. This
will create another folder by the same name on the
computer's desktop. Inside this folder will be the hex file.
It should be about 2300 KB. In the MCS-CONNECT
software, select TRANSMIT SW. Locate the extracted hex
file and select Transmit. Watch the chiller LCD screen. After
the file is uploaded, the CICD unit controller will verify that
it's a valid file and then erase the flash memory. Next, it will
write the new hex to memory. When completed, the
controller will reboot itself. This process may take 15 or 20
minutes. After the reboot is completed, close and restart
the MCS-CONNECT software to reestablish
communication with the chiller.
CG-SVX044B-EN
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