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14. Data logging
Liftwatch Rail has two data-logging functions. These can only be viewed from the (code protected) system set-up area.
Where a data logging system is found not to be operational then the vehicle shall not be used until the vehicle is repaired and fully confirmed as operational.
This requirement applies irrespective whether starting or part-way through an operation.
1.
The Event Logger will make a record of any significant operational event (overload, slew limit, etc), any error event (sensor failure etc),
any manual intervention (override, clock set etc), and any activity within the system set-up (calibration adjustment etc). The current event log
contains a maximum of 500 records. Once full, the event log is backed-up, and a new current event log created. Once more than 10 event
'history' logs exist they will start to 'rotate'. Only the latest 10 log files will be retained - providing a maximum of 5000 events. The red disk symbol
on the top left of the screen will be displayed when an overload event or any manual override occurs.
2.
The Periodic Logger only operates when the system is in the main operational mode. The REC symbol on the top right of the screen will
be displayed when active. A record of the following data is taken every 1 second :
Date
Lifting duty
Lift point radius
Slew angle
Gradient
Operator code
The periodic logger will store a maximum of 100 hours worth of data (operational hours, NOT elapsed time).
Liftwatch Rail Operators Manual 560386-000 Issue 1.2 © Prolec Ltd - Feb 2011
Time
Load on hook
Lift point height
Cant
When Liftwatch Rail is powered-up it will check the logger status. If either logger if 'full' the message
shown here will appear on the display, and a prompt to 'archive' the data will be issued. Once the data has
been archived, all current logged data will be cleared and a new log created.
The following pages list all possible EVENT LOGGER entries. Those marked GREEN are events
that can occur during normal operation. Other events can only occur during service, set-up, and
calibration.
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