Carrier PrimeLINE 69NT40-561-200, Operation And Service Manual

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4.6.4 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 battery 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 DataCORDER is finished recording, it will power down.
During DataCORDER power-up, while using battery-pack power, the controller will perform a hardware voltage
check on the battery. If the hardware check passes, the controller will energize and perform a software battery
voltage check before DataCORDER logging. 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, it indicates that
the battery pack needs replacement.
4.6.5 DataCORDER Alarms
The alarm display is an independent DataCORDER function. If an operating parameter is outside of the expected
range or a component does not return the correct values to the DataCORDER, an alarm is generated. The
DataCORDER contains a buffer of up to eight alarms. A listing of the DataCORDER alarms is described in
Table
4–10
. See
Section
for configuration information.
Displaying Alarm Codes:
1. While in the Default Display Mode, press the ALT. MODE and ALARM LIST keys. This brings up the
DataCORDER Alarm List Display Mode, which displays any alarms stored in the alarm queue.
2. To scroll to the end of the alarm list, press the Up Arrow key. Pressing the Down Arrow key will scroll the list
backward.
3. The left display will show “AL#” where # is the alarms number in the queue. The right display will show
“AA##,” if the alarm is active, where ## is the alarm number. “IA##,” will show if the alarm is inactive
4. “END” is displayed to indicate the end of the alarm list if any alarms are active. “CLEAr” is displayed if all the
alarms in the list are inactive.
5. If no alarms are active, the alarm queue may be cleared. The exception to this rule is the DataCORDER
alarm queue Full alarm (AL91), which does not have to be inactive in order to clear the alarm list. To clear
the alarm list:
a. Press the ALT. MODE and ALARM LIST keys.
b. Press the Up or Down Arrow key until “CLEAr” is displayed.
c. Press the ENTER key. The alarm list will clear and “-----” will be displayed.
d. Press the ALARM LIST key. “AL” will show on the left display and “-----” on the right display when there
are no alarms in the list.
e. Upon clearing of the alarm queue, the alarm light will be turned off.