Carrier 69NT40-541-505, Operation And Service Manual, Page: 44 / 143

T-368 4–14
A list of the configuration variables is provided in Table 4–
2 . Descriptions of DataCORDER operation for each vari-
able setting are provided in the following paragraphs.
4.8.2 Sensor Configuration (dCF02)
Two modes of operation may be configured, the Standard
Mode and the Generic Mode.
a. Standard Mode
In the standard mode, the user may configure the Data-
CORDER to record data using one of seven standard
configurations. The seven standard configuration vari-
ables, with their descriptions, are listed in
Table 4–3 .
The six thermistor inputs (supply, return, USDA #1, #2,
#3, and cargo probe) and the humidity sensor input will
be generated by the DataCORDER. An example of a
report using a standard configuration is shown in
Figure
4.11 .
NOTE
The DataCORDER software uses the supply
and return recorder sensors. The tempera-
ture control software uses the supply and
return temperature sensors.
b. Generic Mode
The generic recording mode allows user selection of the
network data points to be recorded. The user may select
up to a total of eight data points for recording. A list of the
data points available for recording follows. Changing the
configuration to generic and selecting which data points
to record may be done using the Carrier Transicold Data
Retrieval Program.
1. Control mode
2. Control temperature
3. Frequency
4. Humidity
5. Phase A current
6. Phase B current
7. Phase C current
8. Main voltage
9. Suction modulation valve percentage
10. Discrete outputs (See Note )
11. Discrete inputs (See Note )
12. Ambient sensor
13. Compressor suction sensor
14. Compressor discharge sensor
15. Return temperature sensor
16. Supply temperature sensor
17. Defrost temperature sensor
18. Discharge pressure transducer
19. Suction pressure transducer
20. Condenser pressure transducer
4.8.3 Logging Interval (dCF03)
The user may configure four time intervals between data
recordings. Data is logged at exact intervals in accor-
dance with the real-time clock. The clock is factory set at
Greenwich Mean Time.
4.8.4 Thermistor Format (dCF04)
The user may configure the format in which the thermistor
readings are recorded. The low resolution is a 1 byte for-
mat and the normal resolution is a 2 byte format. The low
resolution requires less memory and records temperature
in 0.25°C (0.45°F) increments when in perishable mode
or 0.5°C (0.9°F) increments when in the frozen mode.
The normal resolution records temperature in 0.01°C
(0.02°F) increments for the entire range.
Table 4–2 Data CORDER Configuration Variables
CONFIGURATION NO. TITLE DEFAULT OPTION
dCF01 (Future Use) -- --
dCF02 Sensor Configuration 2 2,5,6,9,54,64,94
dCF03 Logging Interval (Minutes) 60 15,30,60,120
dCF04 Thermistor Format Short Low, Normal
dCF05 Thermistor Sampling Type A A,b,C
dCF06 Controlled Atmosphere/Humidity Sampling Type A A,b
dCF07 Alarm Configuration USDA Sensor 1 A Auto, On, Off
dCF08 Alarm Configuration USDA Sensor 2 A Auto, On, Off
dCF09 Alarm Configuration USDA Sensor 3 A Auto, On, Off
dCF10 Alarm Configuration Cargo Sensor A Auto, On, Off
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