Alarm Action System; Datalog - Maersk Container Industry Star Cool SCI-20 Operating And Service Manual

General information
If the Tevap sensor is not OK, adaptive defrosting uses a reduced defrost interval compared to
normal calculated defrost intervals. Setpoint alteration leads to a new calculated defrost interval,
and defrost starts when the defrost criteria is reached. With manual defrost initiation the current
defrost interval is set to default defrost interval.
Manual defrost termination
Upon manual defrost termination, termination state is entered. No adaptive adjustment takes place
when defrosting is manually initiated.
Regarding user interface
Defrost icon is displayed during defrost function execution.
Other comments
If service mode or PTI mode is selected during a defrost, the defrost mode is terminated and the
time for the next defrosting is set to the preset value as if a normal defrost end had occurred.
If the unit is shut off for some reason during a defrost and the power disappears for less than 12
hours, the unit will start and try to finish the defrost again when the power returns. If the unit is
shut off for more than 12 hours, the active defrost is terminated and the defrost function enters the
wait state.
6.11 Alarm Action System (AAS)
This function defines what to do if a sensor is defect. The strategy is to substitute the missing sen-
sors reading with the value from another sensor and a constant so that the unit can maintain its
functionality with reduced precision.

6.12 Datalog

The controller has a datalog to record operation of the unit. The datalog includes 4 items:
• Data
• Extended data
• Alarms
• Event data
The logged data in the datalog can be seen:
• On the display menu L01, the viewable temperatures are listed.
• On the display menu L03, the logged temperatures can be viewed graphically.
• Retrieved via the program RefCon and the RMM modem and the power line.
• Retrieved via a program, LogMan, on a PSION pda using the retriever socket.
• Retrieved via the StarView program using the retriever socket.
When an alarm is activated it triggers a complete log, however max. one per 15 min. The datalogger
can hold approximately 10.000 logs or more than 1 year of loggings with default logging interval of
one log per hour.
The following tables show retrievables with Starview and Psion Logman software:
File Download Info
F1
F2
F3
F4
F5
F6
F7
Datalog
D1 DT
D2
D3
Signature
Container ID
Controller ID
Controller software
Retriever software
Extraction date
Comments
Date
Time
Log type [Event, Data, Log]
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Operating and service manual