Intelligent Trip Inspection; Alarms - Maersk Container Industry Star Cool SCI-20 Operating And Service Manual

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11.16 Intelligent Trip Inspection (ITI)
O11 Intelligent Trip Inspection
Function:
Turning Intelligent Trip Inspection on or off.
Value:
OFF, ON.
O12 User request of Intelligent trip inspection result log
Function:
Activating command generates result of ITI, if test sequence is completed.
Value:
NONE, LOG.

11.17 Alarms

The alarm list holds all active and inactive alarms. By pressing
full list of active/inactive alarms, fatal alarms and warnings can be accessed using the T00 menu.
The icon is displayed in upper left corner of the display. With any alarms in the list the icon is
displayed on the main menu.
Alarm handling is to protect the unit with cargo and inform the user in case of error conditions. The
main priority is to keep cargo safe.
Alarm handling is split in 2 parts:
1. Detect an abnormal situation and report it as an alarm.
2. React on the alarms and compensate for them (AAS - Active Alarm System).
An alarm can have 4 different levels.
- Log: Information for service. Only in the datalog, not on the display.
No risk to cargo.
- Warning: Warning of an abnormal situation, but the unit continues to operate with
unchanged or little change in functionality in actual running mode.
No risk to cargo.
- Alarm: The unit operates with reduced or changed functionality.
Risk to cargo.
- Fatal Alarm: The unit needs service now!
Serious risk to cargo!
All errors in the 4 levels can have two states: Active or Inactive.
- Active: The alarm is active.
- Inactive: The alarm is no longer active. The alarm can be acknowledged from the alarm list.
The 4 alarm levels will be treated by the controller in the following way:
Alarm type Datalog
Log Yes
Warning Yes
Alarm Yes
Fatal Alarm Yes
Alarm handling is made to detect abnormal situations, possibly solve problems and report the
problems. The alarm types indicate for the operator how severe the problem is for the safety of the
cargo. Some problems are fluctuant where the problem may be fixed if the unit restarts. Some of
the alarms are only warnings but will restart the unit to try to solve the problem. There is an
individual time out period for the alarms. A warning will not stop the unit permanently! If a problem
with warning type continues to be active over a period, the problem seems to be of a more stable
and therefore more severe character and another alarm is triggered with alarm type Alarm.
Operating and service manual
Alarm list Red LED
No OFF
Yes OFF
Yes SLOW FLASH
2% ON, 98 % OFF
Duty time of 3 sec
Yes QUICK FLASH
80% ON, 20 % OFF
Duty time of 1 sec
all active alarms are shown. The
Cargo risk
No risk to cargo
No risk to cargo
Risk to cargo
Serious risk to cargo!