MGE UPS Systems EPS 7000 - Manual (Page 20)

1.5.1 Front Panel
The UPS front panel, includes the emergency power off (EPO) pushbutton, the audible alarm, four LEDs that serve
as system status indicators, the “inverter on” pushbutton, and the “inverter off” pushbutton, (on UPS modules only).
See Figure 1-9.
Figure 1-9: Front Panel Indicators and Control Display.
CAUTION: Pressing the EPO disconnects the attached load. The
emergency power off (EPO) is to be used during emergency
situations only, where a hazard to personnel or equipment
exists, such as during a fire. DO NOT USE THE EPO TO
TURN THE UPS OFF; follow the procedures listed in
this section for turning the inverter on and off.
EPO On the left side of the front panel, an emergency power off (EPO) pushbutton is
provided, with a protective cover to guard against inadvertent operation. This
pushbutton, when activated, disconnects the main AC input (mains 1), bypass AC
input (mains 2), and battery power to the UPS, and disconnects output power to the
attached load.
Audible alarm (item 1) The audible alarm provides an audible warning to the operator by sounding
a pulsed “beep” when any of the following conditions occur:
◗ Load transferred to bypass (mains 2)
◗ Load supplied via battery
◗ Operating problem
During minor alarm conditions, the alarm sounds at a slow rate and a low sound
level. When the battery approaches the low-voltage shutdown level, the alarm
sounds louder and at an increased rate. If the inverter shuts down, the alarm
sounds loudly and continuously.
An audible alarm reset is located on the hidden panel. See Figure 1-11. Pressing it
will silence the alarm. Should a higher-level alarm condition occur after the reset
has been activated, the audible alarm will sound the new alarm condition.
Introduction
EPS 7000 Shared Systems
page 1 — 10