Carrier 69NT40-511-199, 69NT40-521 manual DataCORDER Alarm Configurations Description Selection

The DataCORDER alarms for the USDA and cargo probes are configurable using the interrogation program or via a configuration card. There are four configuration variables for the DataCORDER, which are listed in Table 3-8 with their descriptions and selection values.

Table 3-8. DataCORDER Alarm

Configurations

Configuration	Description	Selection
Variable		Values
dCF07	USDA (PR1)	Auto,On,Off
dCF08	USDA (PR2)	Auto,On,Off
dCF09	USDA (PR3)	Auto,On,Off
dCF10	Cargo Probe (PR4)	Auto,On,Off

The default configuration for the four probes is “Auto.” If the alarms are configured as “Auto,” and all the probes are missing (i.e., appear open-circuited to the DataCORDER), no alarms are activated. As soon as one of the probes is installed (plugged into the receptacle), then all of the alarms are enabled and the remaining probes that are not installed will give active alarm indications. This function is designed to assist those users who wish to keep their DataCORDER configured for USDA recording, and do not wish to install the probes for every trip.

If a probe alarm is configured to be “On,” then the associated alarm is always enabled. As long as the probe remains in-circuit (plugged in), the alarm will not be activated. Probes with this configuration have alarms that act like the alarms for the supply and return recorder sensors. It is presumed that normal operation includes the probe in question.

If a probe alarm is configured to be “Off,” then the alarm for this probe is always disabled. It is not possible to activate the respective alarm for this probe no matter what the circumstance.

3.3.5Access to DataCORDER Functions

To access the DataCORDER functions codes, alarm codes, configuration and scrollback, the user must first press the ALT. MODE key, then press the applicable key for functions (CODE SELECT) or alarms (ALARM LIST).

a. Keypad/Display Interface

The DataCORDER uses the Controller display and keypad. The DataCORDER contains four types of display parameters. They are: functions codes, alarm codes, configuration and scrollback.

b. DataCORDER Power-Up

The DataCORDER may be powered up in several ways:

1.Normal AC power: The DataCORDER is powered up when the unit is turned on via the stop-start switch (ST).

2.Normal DC power: If a rechargeable battery pack is installed (fully charged), the user may plug the interrogation cable into the front interrogation receptacle and the DataCORDER will power up for communications.

On every DataCORDER wake-up, while using battery-pack power, the Controller will first perform a hardware voltage check on the battery. If the hardware check passes, the Controller will energize the appropriate circuitry and perform a software battery voltage check before DataCORDER logging. If either the hardware or software battery test fails, the real time clock (RTC) battery-backed wake-up will be disabled until the next AC power cycle. Further DataCORDER temperature logging will be prohibited until that time.

A 12 volt VCR battery pack may also be plugged into the back of the interrogation cable, which is then plugged into either interrogation port. No rechargeable battery pack is required with this method. The user may now interrogate the DataCORDER.

3.Real Time Clock (RTC) because a logging interval has expired: If the DataCORDER is equipped with a charged battery pack and AC power is not present, the DataCORDER will power up when the RTC indicates that a data recording should take place. When the DataCORDER is finished recording, it will power down.

c. DataCORDER Battery Pack Test

If the DataCORDER has the optional battery pack, then the battery voltage will be tested once every five minutes. 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 probably needs replacement.

d.Trip Start Processing To initiate Trip Start:

S Press the ALT. MODE key

SSelect function code dC30

SDepress the ENTER key for five seconds

Trip Start will flash for five seconds, turn solid, then the date will appear to indicate that a Trip Start is registered. Trip Start may also be initiated via communications using the interrogation program.

SECTION 3

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