Always
O
n UPS Systems
M0703_NX_Series_Operators_Manual
V1.25
2012-06-12 40
9.3
Menu 2 – Status Warning Menu
The Status/Warning menu is accessed through MENU 1 by selecting STATUS WARNING
FAULT. The left-hand side of this menu shows the real time status of the rectifier, inverter and
static switch, while the right hand side shows the warning or fault condition if any. Under normal
condition, the LCD display should be exactly the same as the figure shown above. When
abnormal conditions occur it will be shown under the title < WARNING >, but this will be
overridden by a “fault” message if more serious abnormal conditions occur and the title <
WARNING > will then change to < FAULT >.
For example, if a short circuit has occurred, this screen will display as follows:
The inverter will automatically shut off under a short circuit fault. The CPU is designed to detect
short circuits and in order to avoid unnecessary tripping of the reserve (utility supply) breaker,
the static switch will remain open or inactive. (There will be no output power present)
Listed below are all the warning conditions that can be displayed (they are arranged in order of
priority, starting with the highest priority):
1
st
row:
BYPASS ON
– Output is being supplied by the reserve
RECT AC FAIL
– AC utility source failure
RECTIFIER PHASE ERROR
– AC utility phase loss or one phase out of operating
parameters
RESERVE FREQ. ERROR
– AC utility frequency is out of parameters and reserve
has been disabled until error is corrected
2
nd
row:
170% OVERLOAD
– over 170% maximum capacity for the UPS system.
150%
OVERLOAD
– over 150% maximum capacity for the UPS system.
125%
OVERLOAD
– over 125% maximum capacity for the UPS system.
110%
OVERLOAD
– over 110% maximum capacity for the UPS system.
3
rd
row:
BATTERY LOW STOP
– Battery have been exhausted.
BATTERY LOW
– Batteries have passed the low voltage level and will soon be
exhausted.
BATTERY
BAD
– One or more cells have tested faulty.
BATTERY GND FAULT
– Battery cabinet not grounded properly.
BATTERY
TESTING
– performing test on the batteries.
S T A T U S
W A R N I N G
R E C T I F I E R = O N
I N V E R T E R = O N
L O A D
O N
I N V E R T E R
S T A T U S
F A U L T
R E C T I F I E R = O N
S H O R T
C I R C U I T
I N V E R T E R = O F F
L O A D
O N
I N V E R T E R
Figure 9.3.1
Status Warning Menu Display
Figure 9.3.2
Warning Status Display with Fault Condition