Carrier 69NT40-541-505, Operation And Service Manual, Page: 46 / 143

T-368 4–16
4.8.5 Sampling Type (dCF05 & dCF06)
Three types of data sampling are available − average,
snapshot, and USDA. When configured to average, the
average of readings taken every minute over the
recording period is recorded. When configured to snap-
shot, the sensor reading at the log interval time is
recorded. When USDA is configured, the supply and
return temperature readings are averaged and the
three USDA probe readings are snapshot.
4.8.6 Alarm Configuration (dCF07 − dCF10)
The USDA and cargo probe alarms may be configured
to OFF, ON or AUTO.
If a probe alarm is configured to OFF, then the alarm
for this probe is always disabled.
If a probe alarm is configured to ON, then the associ-
ated alarm is always enabled.
If the probes are configured to AUTO, they act as a
group. This function is designed to assist users who
keep their DataCORDER configured for USDA record-
ing, but do not install the probes for every trip. If all the
probes are disconnected, no alarms are activated. As
soon as one of the probes is installed, then all of the
alarms are enabled and the remaining probes that are
not installed will give active alarm indications.
The DataCORDER will record the initiation of a pre-trip
test (refer to Section 4.7 ) and the results of each of the
tests included in pre-trip. The data is time-stamped and
may be extracted via the Data Retrieval program. Refer
to Table 4–9 for a description of the data stored in the
DataCORDER for each corresponding pre-trip test.
4.8.7 DataCORDER Power-Up
The DataCORDER may be powered up in any one of
four ways:
1. Normal AC power : The DataCORDER is powered up
when the unit is turned on via the stop-start switch.
2. Controller DC battery pack power : If a battery
pack is installed, the DataCORDER will power up
for communication when an interrogation cable is
plugged into an interrogation receptacle.
3. External DC battery pack power : A 12 − volt bat-
tery pack may also be plugged into the back of
the interrogation cable, which is then plugged
into an interrogation port. No controller battery
pack is required with this method.
4. Real-time Clock demand : If the DataCORDER is
equipped with a charged battery pack and AC
power is not present, the DataCORDER will power
up when the real-time clock indicates that a data
recording should take place. When the Data-
CORDER is finished recording, it will power down.
During DataCORDER power-up, while using battery-
pack power, the controller will perform a hardware volt-
age check on the battery. If the hardware check
passes, the Controller will energize and perform a soft-
ware battery voltage check before DataCORDER log-
ging. If either test fails, the real-time clock battery
power-up will be disabled until the next AC power
cycle. Further DataCORDER temperature logging will
be prohibited until that time.
An alarm will be generated when the battery voltage
transitions from good to bad indicating that the battery
pack needs recharging. If the alarm condition persists
for more than 24 hours on continuous AC power, the
battery pack needs replacement.
4.8.8 Pre-trip Data Recording
The DataCORDER will record the initiation of a Pre-trip
test (refer to Section 4.7 ) and the results of each of the
tests included in pre-trip. The data is time-stamped and
may be extracted via the Data Retrieval program. Refer
to Table 4–9 for a description of the data stored in the
DataCORDER for each corresponding pre-trip test.
4.8.9 DataCORDER Communications
Data retrieval from the DataCORDER can be accom-
plished by using the DataLINE, DataBANK Card, or a
communications interface module.
NOTE
A DataLINE or a communications interface
module display of Communication Failed is
caused by faulty data transfer between the
datacorder and the data retrieval device.
Common causes include:
1. Bad cable or connection between Data-
CORDER and data retrieval device.
2. PC communication port(s) unavailable or mis-
assigned.
Communication identification for the models covered
herein may be obtained on the Container Products
Group Information Center by authorized Carrier Transi-
cold Service Centers.
Table 4–3 Data CORDER Standard Configurations
Standard
Config.
Description
2 sensors
(dCF02=2) 2 thermistor inputs (supply & return)
5 sensors
(dCF02=5)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
6 sensors
(dCF02=6)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 humidity input
9 sensors
(dCF02=9) Not Applicable
6 sensors
(dCF02=54)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 cargo probe (thermistor input)
7 sensors
(dCF02=64)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 humidity input
1 cargo probe (thermistor input)
10 sensors
(dCF02=94)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 humidity input
1 cargo probe (thermistor input)
Downloaded from ManualsNet.com search engine