Section 3 – SR-2 Software Description
Cycle Sentry Low Speed Switch Point
Micro Rev
All
HMI Rev
All
Choices
3.5°F (1.9°C) to 10.0°F (5.5°C)
Factory Set
3.5°F (1.9°C)
Exceptions Only appears if High Speed
Pulldown = Off.
Description Low Speed Switch Point is the point
at which the unit will switch from high speed
operation to low speed operation on temperature
pull down. This is true on initial startup as well as a
startup from Cycle Sentry Null. This feature is not
available if High Speed Pull Down = On.
If High Speed Cool to Low Speed Cool Switch Point
is set above 3.5°F (1.9°C), the Null Restart Above
Setpoint feature will be changed automatically. It
must be at least 1.5°F (0.8°C) above the setting of
High Speed Cool to Low Speed Cool Switch Point.
Cycle Sentry Null Restart Temperature
Micro Rev
All
HMI Rev
All
Choices
5.0°F (2.7°C) to 15.0°F (8.5°C)
Factory Set
5.0°F (2.8°C)
Exceptions
Description This feature determines the number
of degrees above setpoint that the temperature can
rise before the unit restarts in Cycle Sentry Mode.
The range of values available is determined by the
setting of High Speed Pull Down. If Low Speed
Switch Point is set above 3.5°F (1.9°C), the Null
Restart Temperature feature will be changed
automatically. It must be at least 1.5°F (0.8°C)
above the setting of High Speed Cool to Low Speed
Cool Switch Point.
With frozen range setpoints, the maximum restart
limit can be no greater than 29°F (-1.6°C). This
prevents melt damage with frozen cargo.
The Null Restart Temperature below setpoint is a
fixed value and cannot be changed.
Cycle Sentry Door Open Forces
Micro Rev
All
HMI Rev
All
Choices
Off or Log Only
Factory Set
Log Only
Exceptions
Description If the optional door switch is
installed this feature allows the Door Open action for
the selected range to be set. If this feature is set
OFF the unit will shut the unit down and log the door
opening 4 seconds after the door is opened. If the
unit is in defrost when the door is opened the defrost
cycle will be completed before the unit shuts down.
If this feature is set LOG ONLY the door opening will
be logged after 4 seconds but the unit will continue
to run.
Door openings are logged in both the CargoWatch
and ServiceWatch data loggers. The door switch
must be open or closed for 4 seconds before the
event is logged to prevent false readings.
Cycle Sentry Door Open Timeout
Micro Rev
All
HMI Rev
All
Choices
Off, 1 hour to 4 hours in 10-minute
increments
Factory Set
Off
Exceptions Only appears if Cycle Sentry Door
Open Forces = Off.
Description This feature allows the unit to restart if
the door open time exceeds the set limit.
Door Open Timeout for the selected range can be
set to Off or for a time limit from 1 to 4 hours, in 10-
minute increments. If set Off the unit will remain off
until the door is closed. If a time period is selected
the unit will restart and run 4 seconds after the time
period elapses. It will continue to run even if the
door is still open.
3-32
31 January 2005
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