APC 9000 User Manual

34006452EN/AC

 - Page 20 

Control panel

3.2 Hidden control panel  

Hidden control panel
(cellules onduleur et "Normal-secours")  

The hidden panel, located behind the hinged cover, offers the following indications and control functions:
– environment faults;

– general faults in system modules;

– special control buttons (see figure 24).
This panel is identical for all types of cubicles, however, the controls or indications

 that do not concern a given cubicle 

are not activated.

This button

 clears the alarms stored in memory. The memory may not be cleared until the cause of the alarms 

has ceased.

This button

stops the buzzer. A new fault starts the buzzer again.

This button

starts a battery charge cycle (vented lead-acid batteries only). The cycle duration may be programmed 

(default value is 24 hours). Then the RC automatically shifts to "floating" mode.

This button

can be used during a charge cycle to force the RC to return to "floating" mode.

This button

avoids inadvertent operation of the remaining three control buttons:

– Mains 2 synchronization or desynchronization;

– forced transfer to inverter with load interruption;

– forced inverter shutdown with load interruption;
When pressing one of the above three buttons, the security button must also be pressed at the same time.

This button

desynchronizes or resynchronizes the inverter output frequency with that of Mains 2.

– for parallel-connected modular UPSs, this function must be carried out on all the UPSs.

fault