USV MT3200
Instruction manual
MT Series
Page 21 of 36
9 Operating and controlling the equipment
9.1 Operating the UPS equipment
The operation of this equipment is indicated by various operating modes and
signals.
9.1.1 Operating modes and signals
The most important operating modes of the UPS are:
Charging mode:
If the mains power is available and the line-side fuse or safety cutoff is switched
on, the UPS is in charging mode.
-> The batteries are already charged, but the UPS has not yet been switched
on.
Display/alarm signal: the ON Line indicator flashes.
Startup mode:
If the mains power is available, the startup procedure is initiated when the main
switch on the front of the equipment is pressed, then on-line mode is
automatically activated.
If no mains power is available during the startup procedure, the UPS switches
directly to support mode following the startup procedure.
Display/alarm signal: the starting response is indicated by a short progress
display or a flashing of the entire display. No audible alarm signal. The example
below shows the A.V.R. operation phase with 50% load. The indicators for ON
Line, ON A.V.R. and 50% output load indicators light up.
