Specifications

41
Status function
This function shows the rotating display, current status of alarm
and alert (diagnostic) codes, capacity stages, operating modes,
chilled water setpoint, all measure system temperatures and
pressures, analog inputs, and switch inputs.
Alarms/Alerts
Alarms and alerts are messages that indicate that one or more
faults have been detected. See Table for definitions. The alarms
and alerts indicate failures that cause the unit to shut down,
terminate an option (such as reset) or result in the use of a default
value as set point.
Up to 10 alarms/alerts can be stored at once. To view them press
<1> <STAT>. The control will display the current total number
of alarms/alerts. Use the arrow keys to scroll through the list.
Depress the <EXPN> key when needed to view the full description
of an alarm or alert. Press <1> <ENTR> to clear all the alarms.
When an alarm or alert is stored in the display and the machine
automatically resets, the alarm/alert is deleted. Codes for safeties
which do not automatically reset are not deleted until the problem
is corrected and the machine is switched to the OFF position,
then back to LOCAL/REMOTE or under CCN control. To clear
manual reset alarms from the CPM control modules, the control
circuit breaker must be switched off, then back on.
General parameters
General operating parameters are displayed including control
mode, run status, CCN status and the five most current alarms.
Press <2> <STAT> to display these and the other values as shown
in status function and subfunctions table.
Circuit A and B analogue and discrete information
Circuit A analogue values can be viewed by pressing <3> <STAT>
and scrolling down to see current system operating conditions
such as pressures and temperatures. Pressing <4> <STAT> will
bring up Circuit A Discrete Inputs and outputs. Scroll down to
view the On/Off status of the compressor(s), loaders, solenoids
and pumps. Oil switch and feedback inputs are also displayed.
Press <5> and <6> <STAT> to view the identical analogue values
and discrete inputs and outputs for Circuit B. See status function
and subfunctions table for a complete display.
Unit analogue parameters and temperature reset
Press the <7> and <STAT> keys and scroll down to display the
unit entering and leaving fluid temperatures as well as the
temperature reset signal and calculated values.
Miscellaneous Inputs and Outputs
Pressing <8> <STAT> and scrolling down will display the demand
limit settings, pump relay and switch status and miscellaneous
items such as Heat/Cool and Dual Setpoint switch positions. See
status function and subfunctions table for a complete list.
Modes
The operating modes are displayed to indicate the operating status
of the unit at a given time. See status function and subfunctions
table for a complete list of all modes.
To enter the MODES subfunction, press <9> <STAT> and use
the <↓> key to view all current modes of operation.
Capacity Control
Pressing <10> <STAT>, this subfunction displays the load/unload
factor, control point and leaving water temperature. Scrolling
down will also reveal the liquid level sensor values in degrees
format.
STATUS
SUBFUNCTION KEYPAD DISPLAY COMMENT
ENTRY
1 Alarms <1> Alarm: xx
<STAT> Reset Alarms: 1 <ENTER>
<↓> Scroll down to display all current alarms. Use
EXPN key when needed.
2 General Parameters <2> General parameters
<STAT>
<↓> Control Mode Displays LOCAL
ON/OFF or CCN
ON/OFF
<↓> Run Status Displays Off/On
<↓> Occupied ? Displays Yes/No
<↓> CCN Enable Displays Off/On
<↓> CCN Chiller Start/Stop Displays Start/Stop
<↓> Alarm State Displays
Normal/Alarm
<↓> Current Alarm 1 Displays x.xx
<↓> Current Alarm 2 Displays x.xx
<↓> Current Alarm 3 Displays x.xx
<↓> Current Alarm 4 Displays x.xx
<↓> Current Alarm 5 Displays x.xx
<↓> Active Demand Limit Displayed as xxx.x %
<↓> Percent Total Capacity Displayed as xxx.x %
<↓> Water/Brine Setpoint Displayed as xx.x °C
<↓> Control Point Displayed as xx.x °C
<↓> Entering Fluid Temperature Displayed as xx.x °C
<↓> Leaving Fluid Temperature Displayed as xx.x °C
<↓> Emergency Stop Displayed Emstop
<↓> Minutes Left for Start Displayed as xx min
<↓> Heat-Cool Status Displayed Heat/Cool
3 Circuit A Analogue <3> Circuit A analogue
Values <STAT> VALUES
<↓> Total Capacity Displayed as xxx.x %
<↓> Available Capacity Displays xxx.x %
<↓> Discharge Pressure Displays xxx.x kPa
<↓> Suction Pressure Displays xxx.x kPa
<↓> A1 Oil Pressure Diff. Displays xxx.x kPa
<↓> A2 Oil Pressure Diff. Displays xxx.x kPa
<↓> A1 Oil Pressure Displays xxx.x kPa
<↓> A2 Oil Pressure Displays xxx.x kPa
<↓> Discharge Gas Temperature Displays xxx.x °C
<↓> A1 Motor Temperature Displays xxx.x °C
<↓> A2 Motor Temperature Displays xxx.x °C
<↓> SAT Condensing Temp Displays xxx.x °C
<↓> Saturated Suction Temp Displays xxx.x °C
<↓> EXV Percent Open Displays xxx.x %
<↓> Motormaster Speed Displays xxx.x %
<↓> Water Valve Position Displays xxx.x %
<↓> Cooler Level Indicator Displays xxx.x
<↓> CPM A1 Feedback Displays x.x Volts
<↓> CPM A2 Feedback Displays x.x Volts
<↓> Circuit A Econ Pressure Displays xxx.x kPa