T-340
4–18
4.8.3
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 DataCORDER to record data using one of seven standard config
-
urations. The seven standard configuration variables, with their descriptions, are listed in
The inputs of the six thermistors (supply, return, USDA #1, #2, #3 and cargo probe) and the humidity sensor input
will be generated by the DataCORDER (see
).
NOTE
The DataCORDER software uses the supply and return recorder sensors (SRS, RRS). The temperature
control software uses the supply and return temperature sensors (STS, RTS).
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. Evaporator expansion valve percentage
10. Discrete outputs (Bit mapped - require special handling if used)
11. Discrete inputs (Bit mapped - require special handling if used)
12. Ambient sensor
13. Evaporator temperature sensor
14. Compressor discharge sensor
15. Return temperature sensor (RTS)
16. Supply temperature sensor (STS)
17. Defrost temperature sensor (DTS)
18. Discharge pressure transducer (DPT)
19. Suction pressure transducer (SPT)
20. Condenser pressure transducer
21. Vent position sensor (VPS)
4.8.4
Logging Interval (dCF03)
The user may select four different time intervals between data recordings. Data is logged at exact intervals in
accordance with the real time clock. The clock is factory set at Greenwich Mean Time (GMT).
4.8.5
Thermistor Format (dCF04)
The user may configure the format of the recorded thermistor readings. The short resolution is a 1 byte format and the
long resolution is a 2 byte format. The short requires less memory and records temperature with variable resolutions
depending on temperature range. The long records temperature in 0.01°C (0.02°F) steps for the entire range.
