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5. Check that interlock faults have not been activated after completion
of a process.
Backup battery fault
If there is a fault in the control system backup battery, an alarm is
triggered when the current process has ended and the control system has
returned to the standby phase. In this mode, no parameters or program
sequences have been lost. Data is only lost if the power to the control
system is turned off with the main switch or if there is a power failure.
Before shutting down:
1. Save the program in the flash memory or in a file; see also the
CONTROL SYSTEM chapter.
2. Make sure that the program has been saved, so that it can be
reloaded.
3. Only turn off the operating current when you quite certain that the
program has been saved.
Replace battery
The battery cannot be replaced. Instead, order an replacement CPU
board if a new battery is needed.
When operating voltage is lost:
If the backup battery voltage is low at the same time as a power failure
occurs during a process, all software is lost.
The control system can no longer check the process, and the unit must
be brought to a safe mode by manual control. See the description of the
menus for testing digital outputs in the chapter CONTROL UNIT
PACS3000.
WARNING!
Lithium battery. Explosion hazard.
We advise against any attempt to replace the battery!
If a new battery is needed, order a replacement card.
Never replace the battery with a type other than that
supplied.
When using this method, the blocks that prevent
hazardous situations from arising are removed. The
technician himself has to decide which operations are
permitted.
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