T-354
4–20
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 dis played for
battery voltages less than 4.5 volts. After the result is displayed for four sec-
onds, "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).
Cd24
Controlled
Atmosphere State
Not used in this application
Cd25
Compressor Run Time
Remaining Until Defrost
This code displays the time remaining until the unit goes into defrost (in tenths of
an hour). This value is based on the actual accumulated compressor running time.
Cd26
Defrost Temperature
Sensor Reading
Defrost temperature sensor reading is displayed.
Configurable Functions
NOTE
Function codes Cd27 through Cd37 are user-selectable functions. The operator can change the value
of these functions to meet the operational needs of the container.
Cd27
Defrost Interval (Hours
or Automatic)
There are two modes for defrost initiation, either user-selected timed intervals
or automatic control. The user-selected values are (OFF), 3, 6, 9, 12, or 24
hours while the factory default is 12 hours.
Automatic defrost starts with an initial defrost at three hours and then adjusts
the interval to the next defrost based on the accumulation of ice on the evapo-
rator coil. Following a start-up or after termination of a defrost, the time will not
begin counting down until the defrost temperature sensor (DTS) reading falls
below set point. If the reading of DTS rises above set point any time during the
timer count down, the interval is reset and the countdown begins over.
If DTS fails, alarm code AL60 is activated and control switches over to the return
temperature sensor. The controller will act in the same manner as with the DTS
except the return temperature sensor reading will be used.
Defrost Interval Timer Value (Configuration variable CnF23):
If the software is configured to "SAv" (save) for this option, then the value of the
defrost interval timer will be saved at power down and restored at power up.
This option prevents short power interruptions from resetting an almost expired
defrost interval, and possibly delaying a needed defrost cycle.
NOTE
The defrost interval timer counts only during compressor run time.
Table 4–5 Controller Function Codes (Continued)
CODE
TITLE
DESCRIPTION
Содержание 69NT40-541-306
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