Chapter 4 Operator Control And Display Panel 41
NX UPS Single Module And Parallel System 250kVA ~ 800kVA User Manual
Indicator
State
Description
Solid green
Load on battery
Flashing green
Battery EOD pre-warning
Solid red
Battery abnormal (failed, absent or polarity reversed) or battery converter abnormal
(failed, overcurrent or overtemperature)
Battery indicator
Off
Battery and battery converter normal, battery charging
Solid green
Load on bypass
Solid red
Bypass power abnormal or outside specifications, or static bypass switch fault
Bypass indicator
Off Bypass
normal
Solid green
Load on inverter
Flashing green
Inverter turning on, starting up, synchronizing
Solid red
Inverter fault
Inverter indicator
Off Inverter
not
operating
Solid green
UPS output on and normal
Solid red
UPS output on and overloaded
Output indicator
Off
UP output off
Solid green
Normal operation
Solid yellow
UPS alarm (for example, no battery)
Status indicator
Solid red
UPS fault (for example, fuse or hardware fault)
4.1.2 Audible Alarm (Buzzer)
UPS activity is accompanied by the two kinds of sound listed in Table 4-3.
Table 4-3 Audible alarm description
Alarm sound
Meaning
Beep every other second
The UPS has a general alarm (for example, no battery)
Continuous beep
The UPS has a fault (for example, fuse or hardware fault)
4.1.3 Control Keys
The operator control and display panel provides five control keys, as described in Table 4-4.
Table 4-4 Description of control keys
Control key
Silkscreen
Description
EPO switch
EPO
Cut off the load power, shut down the rectifier, inverter, static bypass and battery
Inverter start switch
INVERTER ON
Start the inverter
Inverter shutdown
switch
INVERTER OFF
Shut down the inverter
Fault reset switch
FAULT CLEAR
Clear fault
Alarm silencing
switch
SILENCE ON/OFF
When an alarm is active, pressing this key silences the audible alarm. Pressing
this key again enables the buzzer again
Note: It is required to hold and press the preceding keys for two seconds to initiate the key function
4.1.4 LCD And Menu Keys
The operator control and display panel provides an LCD and five menu keys (F1 ~ F4, HELP). The menu keys are
described in Table 4-5.
Table 4-5 Menu key description
Function 1
Function 2
F1
F2
F3
F4
ESC
Escape
Left
Up
Right
Down
Enter
Key
HELP
HOME
FLOW
Flow chart