Operating instructions

TM 11574A-OI
2-28
Table 2-6 Controller Function Codes
Code
No.
TITLE DESCRIPTION
Note: If the function is not applicable, the display will read “---------”
Display Only Functions
Cd01
Suction Modulation
Valve Opening (%)
Displays the SMV percent open. The right display reads 100% when the valve
is fully open and 0% when the valve is fully closed. The valve will usually be at
21% on start up of the unit except in very high ambient temperatures.
Cd02 Quench Valve Displays state of the solenoid quench valve, open or closed.
Cd03 Not Applicable Not used
Cd04
Cd05
Cd06
Line Current, Phase
A
Line Current, Phase
B
Line Current, Phase
C
The current sensor measures current on two legs. The third unmeasured leg is
calculated based on a current algorithm. The current measured is used for
control and diagnostic purposes. For control processing, the highest of the
Phase A and B current values is used for current limiting purposes. For
diagnostic processing, the current draws are used to monitor component
energization. Whenever a heater or a motor is turned ON or OFF, the current
draw increase/reduction for that activity is measured. The current draw is then
tested to determine if it falls within the expected range of values for the
component. Failure of this test will result in a pre-trip failure or a control alarm
indication.
Cd07 Main Power Voltage The main supply voltage is displayed.
Cd08
Main Power Fre-
quency
The value of the main power frequency is displayed in Hertz. The frequency
displayed will be halved if either fuse F1 or F2 is bad (alarm code AL21).
Cd09 Ambient Temperature The ambient sensor reading is displayed.
Cd10
Compressor Suction
Temperature
Compressor suction temperature sensor reading is displayed.
Cd11
Compressor Dis-
charge Temperature
Compressor discharge temperature sensor reading is displayed.
Cd12
Compressor Suction
Pressure
Compressor suction pressure transducer reading is displayed.
Cd13 Condenser Pressure Condenser pressure transducer reading is displayed.
Cd14
Compressor Dis-
charge Pressure
Compressor discharge pressure transducer reading is displayed.
Cd15
Unloader Valve(On--
Off)
Not used in this application
Cd16
Compressor Motor
Hour Meter
Records total hours of compressor run time. Total hours are recorded in incre-
ments of 10 hours (i.e., 3000 hours is displayed as 300).
Cd17
Relative Humidity (%) Humidity sensor reading is displayed. This code displays the relative humidity,
as a percent value.
Cd18 Software Revision # The software revision number is displayed.
Cd19 Battery Check
This code checks the Controller/DataCORDER battery pack. While the test is
running, “btest” will flash on the right display, followed by the result. “PASS” will
be displayed for battery voltages greater than 7.0 volts. “FAIL” will be
displayed for battery voltages between 4.5 and 7.0 volts, and “---------” will be
displayed for battery voltages less than 4.5 volts. After the result is displayed
for four seconds, “btest” will again be displayed, and the user may continue to
scroll through the various codes.
Cd20 Config/Model #
This code indicates the dash number of the model for which the Controller is
configured (i.e., if the unit is a 69NT40-541-100, the display will show “41100”).
Cd21
Humidity Water
Pump/Atomizer
Status
This code displays the status of the humidity water pump (---------,forward,
reverse or off). If not configured, the mode is permanently deactivated and will
display “---------.”
Cd22 Compressor Speed The status of the compressor is displayed (high, low or off).
Cd23 Evaporator Fan Displays the current evaporator fan state (high, low or off).