Stop Parameters - Carrier VECTOR 6500 Operation & Service Manual

If SEPARATE is selected, then the following Functional
Parameter values will be available for use:
• PERISHABLE MINIMUM RUN TIME
• PERISHABLE MINIMUM OFF TIME
• PERISHABLE RESTART TEMPERATURE
• PERISHABLE OVERRIDE TEMP
• PERISHABLE MAXIMUM OFF TIME
• FROZEN MINIMUM RUN TIME
• FROZEN MINIMUM OFF TIME
• FROZEN RESTART TEMPERATURE
• FROZEN OVERRIDE TEMP
• FROZEN MAXIMUM OFF TIME
• FROZEN SHUTDOWN OFFSET
NOTE
In the event that this Configuration was set to
SEPARATE and the ten Functional Parameters
for Perishable and Frozen have been set and
then the Configuration is changed from SEPA-
RATE to TOGETHER. The values from the Per-
ishable settings will be the ones that will be
used.

4.4.2 Stop Parameters

Whenever the unit starts in Start-Stop Operation, it will
remain in the Start-Stop ON cycle until all five of the
following criteria have been satisfied:
1. It has run for the selected Minimum Run Time
The MINIMUM RUN TIME is selected in the
microprocessor Functional Parameters. The purpose of
this is to force the unit to run long enough to completely
circulate the air inside the compartment, and to ensure
that the product temperature is at set point. This value
may be set from 4 to 60 minutes in 1 minute intervals.
The factory default setting is 4 minutes.
If all Start-Stop parameters required to enter a
Start-Stop Off cycle have been met except this
parameter, the unit will operate with the compressor and
heaters off and the evaporator fan running until this
parameter has also been met.
2. The engine coolant temperature has warmed
Each time the unit is started in Engine Operation it must
continue to run until the coolant temperature rises to
122_F (50_C) to ensure it has fully warmed up before
shutdown is allowed.
If all Start-Stop parameters required to enter a
Start-Stop Off cycle have been met except this
parameter, the unit will operate with the compressor and
heaters off and the evaporator fan running until this
parameter has also been met.
3. The battery is fully charged - Voltage
A good battery is defined as having 13.4 VDC at 77_F
(25_C). The microprocessor
equivalent voltage based on the ambient temperature
62-11389
will calculate the
4−4
and shutdown will be allowed when battery voltage is at
or above the calculated value.
When the microprocessor is powered up, the
status of the unit battery can be readily checked
by reading the Battery Voltage in the Data List.
If "OK." appears after the voltage reading, bat-
tery voltage is sufficient to allow the unit to cycle
off.
If in Engine Operation and all Start-Stop parameters
required to enter a Start-Stop Off cycle have been met
except this parameter, the unit will operate with the
compressor and heaters off and the evaporator fan
running until voltage is greater than 13.4 VDC or for 20
minutes.
If in Standby Operation and the compressor has cycled
off a PSCON relay will energize (to supply power to the
battery charger) until battery voltage is 13.4 volts or 20
minutes has elapsed.
4. The battery is fully charged - Amperage
The microprocessor monitors the charging current.
Once the charging current drops below the selected
value, shutdown will be allowed. The CURRENT FOR
START-STOP SHUTOFF
microprocessor Configurations The value may be set
from 1 to 10 amps in 0.5 amp intervals. The factory
default setting is 7 amps.
If in Engine Operation and all Start-Stop parameters
required to enter a Start-Stop Off cycle have been met
except this parameter, the unit will operate with the
compressor and heaters off and the evaporator fan
running until the charging current drops below the
selected value.
If in Standby Operation and all Start-Stop parameters
required to enter a Start-Stop Off cycle have been met
except this parameter, the unit will enter the Off cycle. In
the Off cycle, the PSCON relay remains energized,
supplying power to the battery charger. The battery
charger will continue to charge the battery if required.
5. The compartment temperature requirement is
satisfied
In Start-Stop Operation the refrigeration system will
operate in Pulldown or Pull-Up Mode in order to reach
the shutdown condition as quickly as possible.
Shutdown will be allowed when the compartment
temperature is within 0.5_F (0.3_C) of set point, for
operation in the Perishable Range. In the Frozen Range,
shutdown will be allowed when the compartment
temperature is calculated to be within 0.5_F (0.3_C)
minus the FROZEN shutdown OFFSET of set point.
The FROZEN shutdown
Parameter may be set from 0 to 3.6_F (0
0.5_(C or F) increments. The factory default setting is
0_F (0_C).
If the temperature requirement has been satisfied while
one of the other shutdown requirements has not been
met, the unit will remain in operation with the
compressor and heaters off and the evaporator fan
running until that Parameter has also been met.
TIP
is selected in
OFFSET Functional
to 2_C) in
the