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104
T-305
Table 23. CA Controller Configuration Variables
CONFIGURATION NO.
TITLE
OPTIONS
DEFAULT
CnF01
Service Hour Meter Display Disable
In, Out
In
CnF02
O
2
Control Band
0.1 to 2% by 0.1% increments.
0.5%
CnF03
CO
2
Control Band
0.1 to 5% by 0.1% increments, or
Off.
0.5%
CnF04
Heater Temperature Set Point
Options 25 to 60
_
C by 1
_
C incre-
ments.
45
_
C
CnF05
Monitor Mode Enable
In, Out
In
9.1.5 Configuration Software (Configuration Vari-
ables)
The Configuration Software is a variable listing of the
components available for use by the Operational
Software. This software is factory installed in
accordance with the equipment fitted and options listed
on the original purchase order. Changes to the
Configuration Software are required only when the
original software has been lost or a physical change has
been made to the unit such as the addition or removal of
an option. A Configuration Variable listed in Table 23.
Change to the factory installed Configuration Software
is achieved via a configuration card.
9.1.6 CA Controller Alarms
The alarm (refer to Table 24, page 105) philosophy
balances the protection of the CA system and that of
the refrigerated cargo. The action taken when an
error is detected always considers the survival of the
cargo. Rechecks are made to confirm that an error
actually exists.
When an alarm occurs:
S
The red alarm light will illuminate when
alarms AL30, AL31, AL32, AL34, AL36, AL39
and AL48 are active or inactive in the alarm
queue.
S
If a detectable problem is found to exist, its
alarm code will be alternately displayed with
the set point on the left display.
S
To determine if alarms have existed, the
alarm list must be accessed. The alarm list
will store up to 16 alarms, in the sequence in
which they occurred.
S
When accessing the alarm list, an “IA” or an
“AA” will appear to the left of the alarm code
number. The “IA” indicates an inactive alarm;
one that has occurred, but no longer exists.
The “AA” indicates an active alarm; one that
is still indicating an improper condition.
S
Alarms that disable all control units (”Shut
Down” alarms) are AL30, AL31, AL32 and
AL36. AL39 is a partial shutdown alarm and
when active will cause AL34 and AL48 to
become shut down alarms.
To Display Alarm Codes:
The Alarm List Display Mode is entered by pressing the
ALARM LIST key while in Set Point Selection or Default
Display mode. The user will be able to display any
alarms archived in the Alarm Queue. If no alarms, other
than those related to the CA Controller memory, are
active, the Alarm Queue may be cleared.
When the ALARM LIST key is pushed:
S
The left display will show “AL#”, where # is
the alarm number of alarms in the queue.
S
The right display will show “AAXX”, if the
alarm is active, where XX is the alarm
number, or “IAXX”, if the alarm is inactive.
The user can look through the alarm queue by
depressing the UP ARROW key. At the end of the alarm
list, if any alarm(s) in the list are active, “END” is
displayed.
If all the alarms in the list are inactive:
S
“CLEAr” is displayed at the end of the alarm
list.
S
At this time if the user pushes the ENTER
key, then the alarm list will clear and display
“----------” on the right display. The user may
also scroll to the end of the alarm list by
pushing the DOWN ARROW key after the
ALARM LIST key is pushed.
S
The DOWN ARROW key being pushed will
allow the user to go backward in the alarm
list.
S
If a user pushes ALARM LIST key when there
are no alarms in the list, the “AL” is displayed
on the left display and “----------” on the right
display. Upon clearing of the Alarm Queue,
the Alarm light will be de-energized.
Another alternative for user to get to the end of the alarm
list is:
S
By pushing the DOWN ARROW key after the
ALARM LIST key is pushed. Thus, the
DOWN ARROW key being pushed will allow
the user to go backward in the alarm list.
S
If a user pushes the ALARM LIST key when
there are no alarms in the list, the “AL” is
displayed on the left display and “----------” on
the right display.
Upon clearing of the Alarms Queue, the Alarm light will
be de-energized.
Summary of Contents for 69NT40-489-100 Series
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Page 167: ...143 T 305 Based on drawings 62 10526 Rev and 62 10736 Rev Figure 90 Electrical Schematic CA...
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