Emerson 7400 - Manual (Page 22)

13
Series 7400 Single Phase 1+N UPS
LCD Display
An LCD display, capable of showing two
rows of 40 characters, is used to indicate the
UPS operating parameters, warnings and
alarms.
A DIP switch fitted to the display
microprocessor board enables the displayed
language to be easily selected to English,
French, Italian, Spanish or German.
The lower row of characters are used to
display metered parameters; which include
output (or bypass) voltage, frequency, or
current together with battery current &
voltage and autonomy time for SMF
batteries only.
Warning and alarm messages are displayed
on the upper row of characters. The ALARM
led and audible warning accompany all
alarm messages but are not activated by
warning messages. In all cases, the
message automatically resets when the
alarmed (or warning ) condition reverts to
normal.
When two (or more) alarm or warning
conditions are active simultaneously, the
appropriate messages are displayed in a
cyclic fashion, with each message appearing
on the display for approximately for 10
seconds.
For all kVA Models battery circuit breaker can be provided either in
auxiliary cubicle or in a separate box. This box is designed to be
wall mounted and is connected between the UPS and battery bank.
The batteries associated with the UPS are generally housed in a
purpose built cabinet / rack located alongside, but not attached to
the main UPS equipment.
It is possible to install batteries of various types and capacities in
the cabinet / rack to obtain required autonomy characteristics.
*** ALARM *** EMERGENCY STOP
*** ALARM *** INVERTER OFF OR FAILED
*** ALARM *** OVER TEMPERATURE
*** ALARM *** OVERLOAD
*** ALARM *** BATTERY CB OPEN
*** ALARM *** OUTPUT CB OPEN
*** ALARM *** BYPASS CB OPEN
*** ALARM *** RECTIFIER OFF OR FAILED
*** ALARM *** UPS ON MAINTENANCE BYPASS
*** ALARM *** INVERTER UNSYNCHRONISED
*** ALARM *** BATTERY ON LOAD
*** ALARM *** BYPASS OFF OR FAILURE
*** ALARM *** LOAD ON BYPASS
*** ALARM *** LOW BATT: BATT UNDER VOLT.
Figure 9: Display messages
1.2.9 Battery Circuit
Breaker
1.2.10 Battery Cabinet /
Rack