Niveo Professional NUPS23-1500, NUPS23-2000, NUPS23-1000, NUPS23-3000 User Manual

1

NUPS23-1KVA to 3KVA 120/240VAC

Rack-Tower Convertible

User Guide

2

Class B EMC Statements

(High Voltage Models up to 3000 VA)

FCC Part 15

NOTE This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:

● Reorient or relocate the receiving antenna.

● Increase the separation between the equipment and the receiver.

● Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

● Consult the dealer or an experienced AV technician for help.

3

Special Symbols

The following are examples of symbols used on the UPS or accessories to alert you to important:

RISK OF ELECTRIC SHOCK - Observe the warning associated with the risk of electric shock

symbol.

CAUTION, requires your attention

This symbol indicates that you should not discard the UPS or the UPS batteries in the trash.
This product contains sealed, lead‐acid batteries and must be disposed of properly. For
more information, contact your local recycling/reuse or hazardous waste center.

This symbol indicates that you should not discard waste electrical or electronic equipment
(WEEE) in the trash. For proper disposal, contact your local recycling/reuse or hazardous
waste center.

4

Table of Contents

1 Introduction ....................................................................................................................................... 5

2 Safety Warnings ................................................................................................................................. 6

3 Installation .......................................................................................................................................... 7

4 Operation .......................................................................................................................................... 18

5 Communication................................................................................................................................ 31

6 UPS Maintenance ............................................................................................................................. 35

7 Specifications ................................................................................................................................... 38

8 Troubleshooting............................................................................................................................... 41

5

1 Introduction

This UPS protects your sensitive electronic equipment from most common power problems, including
power failures, power sags, power surges, brownouts, line noise, high voltage spikes, frequency
variations, switching transients, and harmonic distortion.

Power outages might occur unexpectedly and power quality can be erratic. These power problems
have potential to corrupt critical data, destroy unsaved work sessions, and damage hardware —
causing hours of lost productivity and expensive repairs.

With the UPS, you can safely eliminate the effects of power disturbances and guard the integrity of
your equipment. Providing outstanding performance and reliability, the UPS's unique benefits
include:

 True online double-conversion technology with high power density, utility frequency

independence, and generator compatibility. Output power factor up to 0.8.

 Three segment charging mode to increase battery service life, optimize recharge time.
 Selectable High Efficiency mode of operation.
 Cold start function to startup the UPS without utility.
 Standard communication options: one RS-232 communication port, one USB communication

port, and relay output contacts or SNMP card.

 Extended runtime with up to four Extended Battery Modules (EBPs) per UPS.
 Emergency shutdown control through the Remote Emergency Power-off (EPO) port.
 The content displayed on the interface is rich. The capacity of the loads and the battery can be

seen directly and the FLASH pictures and rotating fan icon can be displayed while charging.
Enhance, it is easy to know its operation status. When UPS fails, it can show the fault code;
therefore, the UPS can be repaired as soon as possible by inquiring fault code table.

 NOTICE: In the manual, RT is short for Rack-Tower conversion
 Rack/Tower convertible LCD design. No matter what angle required, only pressing the key slightly

to reach your perspective needs.

FIG.1 The Rackmount UPS front view

6

FIG.2 The Rackmount EBP front view

2 Safety Warnings

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions that you should follow during
installation and maintenance of the UPS and batteries. Please read all instructions
before operating the equipment and save this manual for future reference.

DANGER

The UPS contains LETHAL VOLTAGES. ONLY AUTHORIZED SERVICE PERSONNEL
should perform all repairs and service. There are NO USER SERVICEABLE PARTS
inside the UPS.

WARNING

 The UPS contains its own energy source (batteries). The UPS output may carry

live voltage even when the UPS is not connected to an AC supply.

 To reduce the risk of fire or electric shock, install the UPS in a temperature and

humidity controlled, indoor environment, free of conductive contaminants.
Ambient temperature must not exceed 40°C (104°F). Do not operate near water
or excessive humidity (90% maximum).

 To reduce the risk of fire, connect only to a circuit provided with branch circuit

overcurrent protection in accordance with the National Electrical Code (NEC),
ANSI/NFPA 70.

 Output overcurrent protection and disconnect switch must be provided by

others.

 To comply with international standards and wiring regulations, the sum of the

leakage current of the UPS and the total equipment connected to the output of
the UPS must not have an earth leakage current greater than 3.5 milliamperes.

 If installing optional rackmount EBP(s), install the EBP(s) directly below the UPS

so that all wiring between the cabinets is installed behind the front covers and is
inaccessible to users. The maximum number of EBP(s) per UPS is four.

 If the UPS requires any type of transportation, verify that the UPS is unplugged

and turned off and then disconnect the UPS internal battery connector.

CAUTION

 Batteries can present a risk of electrical shock or burn from high short-circuit

current. Observe proper precautions. Only qualified service personnel with
knowledge of batteries and the required precautions should perform servicing.
Keep unauthorized personnel away from batteries.

 Proper disposal of batteries is required. Refer to your local codes for disposal

7

requirements.

 Never dispose of batteries in a fire. Batteries may explode when exposed to

flame.

3 Installation

This section explains:

 Equipment inspection
 Unpacking the cabinet
 Checking the accessory kit
 Cabinet installation
 Wiring installation
 Initial startup

Inspecting the Equipment

If any equipment received has been damaged during shipment, keep the shipping cartons and
packing materials for the carrier or place of purchase and file a claim for shipping damage. If
you discover damage after acceptance, file a claim for concealed damage.
To file a claim for shipping damage or concealed damage: 1) File with the carrier within 15
days of receipt of the equipment; 2) Send a copy of the damage claim within 15 days to your
service representative.

Unpacking the Cabinet

CAUTION

 Unpacking the cabinet in a low-temperature environment may cause

condensation to occur in and on the cabinet. Do not install the cabinet until the
inside and outside of the cabinet are absolutely dry (hazard of electric shock).

 The cabinet is heavy. Be careful unpacking and moving the cabinet.

To unpack the cabinet and accessories:

1. Open the outer carton and remove the accessories packaged with the cabinet.

2. Carefully lift the cabinet out of the outer carton.

3. Discard or recycle the packaging in a responsible manner.

Place the cabinet in a protected area that has adequate airflow and is free of
humidity, flammable gas, and corrosion.

Checking the accessories

 UPS user's guide
 Software Suite CD
 USB cable
 Power cord (Input)
 RS232 cable

If you ordered an optional Extended Battery Module (EBP), verify that the following additional item is

8

included with the EBP:

● EBP user's guide

NOTE Discard the EBP user's guide if you are installing the EBP with a new UPS at the same time. Use
the UPS user's guide to install both the UPS and the EBP.

Rackmount Installation

The Rackmount cabinet comes with all of the hardware required for installation in a standard
EIA or JIS seismic Rackmount configuration with square and round mounting holes. The rail
assemblies adjust to mount in 19” racks with a distance from front to rear around 70~76 cm
(27 to 30 inches) deep.

Checking the Rail Kit Accessories（Options）

Verify that the following rail kit items are included for each cabinet:

 Left rail assembly:

- Left rail

- Rear rail

- (3) M5_8 pan-head screws

 Right rail assembly:

- Right rail

- Rear rail

-(3) M5_8 pan-head screws

 Rail hardware kit:

- (8) M5 butterfly nuts

- (2) rear stop brackets

- (8) M5 umbrella nuts

 Mounting bracket kit:

- (2) mounting brackets

- (8) M4_8 flat-head screws

Tools Required

To assemble the components, the following tools may be needed:

 Philips (cross-head type) screwdriver
 and 6 mm wrench or socket

Rackmount Setup

CAUTION



The cabinet is heavy. Removing the cabinet from its carton requires a

minimum of two people.



If installing optional EBP, make sure to install the EBP directly below the UPS so

that all wiring between the cabinets is installed behind the front covers and
inaccessible to users.

NOTE

Mounting rails are required for each individual cabinet

9

To install the rail kit:

1. Assemble the left and right rails to the rear rails as shown in FIG.3. Do not tighten the screws.
Adjust each rail size for the depth of your rack.

FIG.3 Securing the Rails

2. Select the proper size in the rack for positioning the UPS (FIG. 3). The rail occupies four positions

on the front and rear of the rack.

3. Tighten four M5 Butterfly Nuts in the side of rail assembly (see FIG. 4).

4. Fix one rail assembly to the front of the rack with one M5×12 pan-head screw and one M5 cage

nut. Using two M5 cage nuts and two M5×12 pan-head screws, to fix the rail assembly to the rear
of the rack.

FIG.4 Fixing the Rails

5. Repeat Steps 3 and 4 for the other rail assembly.

6. Tighten the four butterfly nuts in the middle of each rail assembly.

7. If installing optional cabinets, repeat Step 1 through Step 6 for each rail kit.

8. Place the UPS on a flat, stable surface with the front of the cabinet facing to you.

9. Align the mounting brackets with the screw holes on each side of the UPS and fix with the

supplied M4×8 flat-head screws (see FIG. 5)

10

FIG.5 Installing the Mounting Brackets

10. If installing optional cabinets, repeat Step 8 and 9 for each cabinet.

11. Slide the UPS and any other optional cabinets into the rack.

12. Secure the front of the UPS to the rack using one M5×12 pan-head screws and one M5 cage nuts

on each side (see FIG. 5). Install the bottom screw on each side through the bottom hole of
mounting bracket and the bottom hole of the rail.
Repeat for any optional cabinets.

FIG.6 Securing the Front of the Cabinet

13. Continue to the following section, “Rackmount Wiring Installation.

Rackmount Wiring Installation

This section explains:

 Installing the UPS, including connecting the UPS internal batteries
 Connecting any Optional EBP

Installing the UPS

NOTE

Do not make unauthorized changes to the ups; otherwise, damage may

occur to your equipment and void your warranty.

NOTE

Do not connect the ups power cord to utility until after installation is

completed.

To install the UPS:

1. Remove the front cover of each UPS
Hold the cover part without LCD on the right side and extract it (see Fig.8)

11

FIG.7 Extract UPS front cover

2. Connect the internal battery connector (see FIG. 8)

Connect red to red, Press the connector tightly together to ensure a proper connection.
Remarks: Please note above step 1 & 2 only for replacing batteries or adding the internal batteries.
The plug will be connected properly if the UPS is with batteries installed.
CAUTION: A small amount of arcing may occur when connecting the internal batteries. This is normal
and will not harm personnel. Connect the cables quickly and firmly.

FIG.8 Connecting the UPS Internal Batteries

3. If you are installing EBPS, see the following section, “Connecting the EBP(s),” before continuing

with the UPS installation.

4. Replace the UPS front cover.

To replace the cover, verify the EBP cable is routed through the knockout on the bottom of the cover
if EBPs are installed.

Put the front cover hooks of side with display to the cover port, put another side to the other two

12

ports, then press it until the cover and the chassis are combined tightly.

FIG.9

5. If you are installing power management software, connect your computer to one of the

communication ports or optional connectivity card. For the communication ports, use an appropriate
cable.

6. If your rack has conductors for grounding or bonding of ungrounded metal parts, connect the

ground cable (not supplied) to the ground bonding screw. See “Rear Covers” for the location of the
ground bonding screw for each model.

7. If an emergency power-off (disconnect) switch is required by local codes, see “Remote Emergency

Power-off” (REPO) to install the REPO switch before powering on the UPS.

8. Continue to “UPS Initial Startup”.

Connecting the EBP(s)

To install the optional EBP(s) for a UPS:

1. Remove the front cover of each EBP and UPS (see FIG. 10).

It is the same with the installation of the front cover. (Refer” To install the UPS “)

FIG.10 Removing the EBP Front Cover

2. On the bottom of the UPS front cover, remove the EBP cable knockout (see FIG. 11).

13

FIG.11 Removing the UPS Cable Knockout

3. For the bottom (or only) EBP, remove the EBP cable knockout on the top of the EBP front cover.

See FIG. 11 for the location of the top EBP cable knockout.

4. If you are installing more than one EBP, for each additional EBP remove the EBP cable knockout

on the top and bottom of the EBP front cover. See FIG. 11 for the location of the EBP cable
knockouts.

CAUTION

A small amount of arcing may occur when connecting an EBP to the UPS. This is normal and will not
harm personnel. Insert the EBP cable into the UPS battery connector quickly and firmly.

5. Plug the EBP cable(s) into the battery connector(s) as shown in FIG. 12. Up to four EBPs may be

connected to the UPS. Connect black to black. Press the connector tightly together to ensure a
proper connection.

To connect a second EBP, unclip the EBP connector on the first EBP and pull gently to extend the
wiring to the EBP connector on the second EBP. Repeat for any additional EBPs.

6. Verify that the EBP connections are tight and the adequate bend radius and strain relief exist for

each cable.

FIG.12 Typical EBP Installation

7. Replace the EBP front cover.

14

To replace the cover, verify that the EBP cables are routed through the EBP cover knockouts, cover
connects with the cover hook near the left side of the EBP cabinet. Repeat for each additional EBP.
It is the same with the installation of the front cover. (Refer” to UPS installation”)

8. Verify that all wires connected between the UPS and EBP(s) are installed behind the front covers

and not accessible to users.

9. Return to Step 4 to continue the UPS installation.

15

Rackmount converted to Tower Installation

1. Rackmount converted to Tower plastic base installation

① two plastic base brackets ② flatten it after interlocking

Interlock as follows

FIG.13 Plastic base installation

③If an EBP is needed to be placed in the middle, the assembly of plastic base is similar.
The difference is that two 1U plastic base extended boards are added in the middle.

（A） （B）

（C） （D）

16

（E） （F）

FIG.14 Increase EBP plastic base

2. The installation between UPS and EBPs

FIG.15 The installation for UPS and battery box

1.Install the base and place the RT UPS on the base one by one as Fig.15 shows.

17

2. The cover installation and cable connection of the UPS and EBPS are the same as RT. (To install the

optional EBP(s) for a UPS)

UPS Initial Startup

To start up the UPS:

NOTE Verify that the total equipment ratings do not exceed the UPS capacity to
prevent an overload alarm.

1. If optional EBPs are installed, verify that the EBPs are connected to the UPS.

2. Plug the equipment to be protected into the UPS, but do not turn on the

protected equipment.

3. Make any necessary provisions for cord retention and strain relief.

4. Plug the detachable UPS power cord into the input connector on the UPS rear

cover.

5. Plug the UPS power cord into a power outlet. The UPS front cover display

illuminates.

6. The ＵＰＳ will do self-test when power on. After that the charger will charge

the battery. If the output displayed on LCD is “0”, there is no output. If you
need mains output without starting the UPS after plugging into the mains, you
need to set bPS option to “ON” on the setting mode.

7. Press the combination start up buttons on the UPS front cover for at least half a

second. The UPS will start up and the LED will turn on and off sequentially.

8. Check the UPS front cover display for active alarms or notices. Resolve any active

alarms before continuing. See Troubleshooting”. If the indicator is on, do
not proceed until all alarms are clear. Check the UPS status from the front
cover to view the active alarms. Correct the alarms and restart if necessary.

9. Verify that the indicator illuminates solid, indicating that the UPS is

operating normally and any loads are powered.

10. If optional EBPs are installed, see “Configuring Battery settings” to set the

number of installed EBPs.

11. To change any other factory-set defaults, see “User settings”.

NOTE

: At initial startup, the UPS sets system frequency according to input line

frequency (input frequency auto-sensing is enabled by default).

NOTE

: At initial startup，please set the output voltage needed before start up the

UPS，After the subsequent startup，the UPS will output the setting voltage.

12. If you installed an optional EPO, test the EPO function: Activate the external

EPO switch. Verify the status change on the UPS display. Deactivate the
external EPO switch and restart the UPS.

NOTE

：The internal batteries charge to 80% capacity in less than 5 hours. However,
we recommend that the batteries should be charged for 48 hours after installation
or long-term storage.

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4 Operation

This chapter contains information on how to use the UPS, including front cover operation, operating
modes, UPS startup and shutdown, transferring the UPS between modes, and configuring bypass
settings, load segments, and battery settings.

Control Cover Functions

The UPS has a three-button segmental LCD with backlight. It provides useful information about the
UPS itself, load status, measurements, and settings (see FIG. 16).

FIG.16 Control Cover

Table 1. Indicator Descriptions

Indicator

Description

Red

On The UPS has an active alarm or fault.

Yellow

On The UPS is in Bypass mode.

The UPS is operating normally on bypass
during High Efficiency operation.

Yellow

On The UPS is in Battery mode.

On The UPS is operating normally.

NOTE

When power on or startup , these indicators will turn on and off sequentially.

NOTE

On different operation modes , these indicators will indicate differently. Refer to Table 7.

19

Table 2. Button function

Button

Function description

Start up combination
（ + ）

RT Press and hold this key for more than half a second
to turn on the UPS or to turn off the UPS.

Shutdown/Rotating

combination
（ + ）

RT Press and hold this key for more than 2 seconds to
circumrotate the LCD.

Battery test/Mute

combination
（ + ）

Press and hold the key for more than 1 second in Line
mode or economic (ECO) mode: UPS runs self-test
function. Press and hold the key for more than 1
second in battery mode: UPS runs mute function.

Scroll or

Non-function setting mode:
Press and hold the key for more than half a second
(less than 2 seconds): Indicate the items of the LCD
item section orderly.
Press and hold this key for more than 2 seconds:
Circularly and orderly display the items every 2
seconds, when press and hold the key for some time
again, it will turn to output status.
Function setting mode:
Press and hold the key for more than half a second
(less than 2 seconds): Select the set option.

Setting entry

Non-function setting mode:
Press and hold the key for more than 2 seconds:
Function setting interface.
Function setting mode:
Press and hold the key for more than half a second
(less than 2 seconds): Affirm the set option.
Press and hold the key for more than 2 seconds, exit
from this function setting interface.

Table 3. The corresponding working status of indications

NO

Working
status

Indication

Warning

Remarks

Nor

Bat

Bps

Fau

1

Line mode

Normal

● None

High/low
voltage
protection,
turn to
battery mode

● ●

★

Once
every four
seconds

20

2

Battery mode

Normal
voltage

● ●

★

Once
every four
seconds

Battery
Voltage
abnormal
warning

●

★ ★

Once per
second

3

Bypass mode

Main AC
Normal
voltage in
bypass mode

●

★

Once
every two
minutes

Eliminate after
starting the UPS

Main AC high
voltage
warning in
bypass mode

★

Once
every four
seconds

Main AC low
voltage
warning in
bypass mode

★

Once
every four
seconds

4

Battery disconnect warning

Bypass mode

●

★

Once
every four
seconds

Affirm if the
battery switch is
closed

Inverting
mode
inverting
mode

●

★

Once

every four

seconds

Affirm if the

battery switch is

closed

Power up or
start

Six times

Affirm if the

battery is

connected well

5

Output overload protection

Overload
warning in
line mode,

●

★

Twice per

second

Remove the

uncritical loads

Overload in
line mode,
protection

●

●

Long

beeps

Remove the

uncritical loads

Overload
warning in

● ●

★

Twice per

second

Remove the

uncritical loads

21

battery mode

Overload in
battery
mode,
protection

● ●

●

Long

beeps

Remove the

uncritical loads

6

Overload
warning in
bypass mode

●

★

Once

every 2

seconds

Remove the

uncritical loads

7

Fan fault (fan
icon flashing)

▲ ▲ ▲

★

Once

every 2

seconds

Check if the fan

is blocked by

object.

8

Fault mode

●

Long

beeps

If display fault

code and

icon lights,

contact for

maintenance

when you

can’t deal with

it by yourself.

● _indicator lights for a long time
★ _indicator flashes
▲ _the status of indicator depends on other conditions

Display Functions

As the default or after 5 minutes of inactivity, the LCD displays the output parameters. The backlit LCD
automatically dims after 5 minutes of inactivity. Press any button to restore the screen.
LCD display comprises numerical value section, capacity graphics section, fan-status graphics section
and charger-status graphics section; refer to Table 4 for detail.

22

Table 4. LCD display section

Section

Description

Graphic

Numerical

value

section

Display the corresponding numerical
value of inquiring items (output, load,
temperature, input, battery), for
example, as the graphics shows the
output voltage is 120v, the output
frequency is 50Hz.

Capacity
graphics

section

Display the capacity of the battery and
load. Every pane represents 20 ％
capacity. As graphics shown above,
the capacity of the battery is 80 ％

-100％( 5 panes), the load reaches
40 ％ -60％ (3 panes). When UPS is
overloaded, the icon will flash, when
battery is weak or disconnected, the
icon will also flash.

Fan-status

graphics

section

Display if the fan works normally.
When the fan works normally, it will
show the dynamic fan blades rotating;
when the fan works abnormally, the
icon will keep on flashing with the
warning.

Charger-status

graphics

section

Display the status of the charger.
When charger works normally, the

corresponding icon will vary
dynamically and orderly.
When charger works abnormally, the
icon will keep flashing
When UPS is in battery mode, the
number of the icons of the
charger-state section will vary
according to the changeable capacity
of the battery (pane).

Parameter inquiring

Press and hold the scroll key or for more than half a second (less than 2 seconds) to inquire
about items. The inquired items include input, battery, output, load, and temperature. Press and hold
the scroll key for more than 2 seconds, LCD begins to display the items circularly and orderly which
transfer to another every 2 seconds. Press and hold the key for some time again, it will return to
output status.

23

Table 5. Parameters inquiring

Item

Description

Graphic

Output

Display the output voltage and output
frequency of the UPS. As the following
graphic shows, the output voltage is 120v &
the output frequency is 50Hz.

Load

Display the numerical value of the active
power (WATT) and apparent power (VA) of
the load. For example, as the following
graphics show: the WATT of the load is
100w, VA is 100VA (when disconnect load, it
is a normal phenomenon to show a small
numerical value of WATT and VA).

Temperature

Display the temperature of the inverter in
the UPS. As the following graphics show:
the temperature of the inverter is 37℃.

Input

Display the voltage and frequency of the
input. As the following graphics shown: the
input voltage is 120v, input frequency is

49.8Hz.

Battery

Display the voltage and capacity of the
battery . As the following graphics shown:
the battery voltage is 38v, the capacity of
battery is 100％(the capacity of battery is
approximately reckoned according to the
battery voltage).

Battery

remaining time

Display the battery remaining time when
under battery mode. The number is from 0
to 999 minutes. As the following graphics
shown: there are 686 minutes left for
discharging.

24

User Settings

The UPS has setting functions. These user settings can be done under any kind of UPS working mode.
The setting will take effect under certain condition. Below table describes how to set the UPS.

Table 6. User Settings

Setting function

Setting procedure

LCD display

ECO function
setting (1)

① Enter the setting interface. Press and hold the
function-setting key for more than 2 seconds, then

come to setting interface, the letters “ECO” will

flash.
② Enter the ECO setting interface. Press and hold
the function-setting key for more than half a
second (less than 2 seconds), the letters “ECO” will
stop flash. The “ON”(or OFF) below the ECO will
flash. Press and hold the scroll key for more than
half a second (less than 2 seconds) to determine
whether the ECO function is enabled or disabled.
③ Confirm the ECO selecting interface. After
selecting ON or OFF, press and hold the function
setting key for more than half a second (less than 2
seconds). Now, the ECO setting function is

completed and the “ON” or “OFF” below the
“ECO” will light without flash.
④ If you choose “OFF”, then go to step 7,

otherwise go ahead to step 5.
⑤ Set the ECO tolerance range. Short press the
scroll key or for more than half a second (shorter
than 2 seconds) to select the voltage range in
percentage. +5%,+10%,+15%,+25%(default is
+25%)，then short press function setting key for
more than half a second (shorter than 2 seconds)to
confirm the selection, then to set the minus range

⑥ To set the minus range in the same way.
⑦ After the minus range is confirmed. Long press

function setting key for more than 2 seconds to
exit setting menu.

Bypass function
setting (2)

① Enter the setting interface. Press and hold the
function setting key for more than 2 seconds, then
come to setting interface, short press the scroll
key for more than half a second (less than 2
seconds) to select BPS setting, the letters “bPS”
will flash.
②Enter the BPS setting interface. Press and hold the

25

function-setting key for more than half a second
(less than 2 seconds) at this time, the letters “bPS”
will stop flashing. The “ON”(or OFF) below the bPS
will flash. Press and hold the scroll key for more
than half a second (less than 2 seconds) to determine
whether the BPS function is enabled or disabled.
③ Confirm the BPS selecting interface. After
selecting ON or OFF, press and hold the function
setting key for more than half a second (less than 2
seconds). Now, the BPS setting function is completed
and the “ON” or “OFF” below the “bPS” will
light without flashing.
④ If you choose “OFF”, then go to step 7,
otherwise go ahead to step 5.
⑤ Set the BPS tolerance range. Short press the scroll
key or for more than half a second (shorter than
2 seconds) to select the voltage range in percentage.
+5%,+10%,+15%,+25%(default is +25%)，then short
press function setting key for more than half a
second (shorter than 2 seconds)to confirm the
selection, then to set the minus range

⑥ To set the minus range in the same way.
⑦ After the minus range is confirmed. Long press

function setting key for more than 2 seconds to
exit setting menu.

Output voltage
setting (3)

① Enter the setting interface. Press and hold the
function setting key for more than 2 seconds, then
come to setting interface, Press and hold the scroll
key for more than half a second(less than 2
seconds), select the function setting, choose output
voltage setting interface, at the moment, the letters

“OPU” will flash.
② Enter the output voltage selecting interface.

Press and hold the function setting key for more
than half a second(less than 2 seconds), then come
to setting interface of output voltage OPU, at this
time, the letters “OPU” will light for a long time.
The numerical value below the OPU will flash. Press
and hold the scroll key for more than half a second
(less than 2 seconds), select the numerical value in
accordance with “OPU” function. The provided
voltages are 100v, 108v, 110v, 115v, 120v, you can
choose any one of them by yourself (The default is
110v).
③ Confirm the output voltage selecting interface.
After selecting numerical value, press and hold the

26

function setting key for more than half a second
(less than 2 seconds). Now, the OPU setting function
is completed and the numerical value below the

“OPU” will light without flashing.
④ Exit from the setting interface. Press and hold

function setting key for more than half a second
(less than 2 seconds), exit from the setting interface
and return to main interface.

Battery string
number and type
setting (4)

① Enter the setting interface. Press and hold the
function setting key for more than 2 seconds, then
come to setting interface, Press and hold the scroll
key for more than half a second (less than 2
seconds), select the function setting, choose battery
setting interface, at the moment, the letters “bAt”
will flash.
② Enter the battery setting interface. Press and hold
the function setting key for more than half a
second (less than 2 seconds), then come to setting
interface of battery, the letters “bAt” will stop
flashing. The numerical value below the “bAt” will
flash. Press and hold the scroll key for more than
half a second (less than 2 seconds), select the
numerical value in accordance with the real
connected battery strings.
③ Confirm the battery strings setting interface。
After selecting numerical value, press and hold the
function setting key for more than half a second
(less than 2 seconds). Now, the battery strings
setting is confirmed and the battery type value
below will flash。

④ Set the battery type in the same way.
⑤Exit from the setting interface. Press and hold

function setting key for more than half a second
(less than 2 seconds), exit from the setting interface
and return to main interface.

EPO Input Polarity
setting（6）

① Enter the setting interface. Press and hold the
function setting key for more than 2 seconds, then
come to setting interface, Press and hold the scroll
key for more than half a second (less than 2
seconds), select the function setting, choose EPO
Input polarity setting interface, the letters “EPO”
will flash.
②Enter the EPO Input Polarity setting interface. Press
and hold the function setting key for more than
half a second (less than 2 seconds) , the letters

“EPO” will stop flashing. The letters below the
“EPO” will flash. Press and hold the scroll key for

27

more than half a second (less than 2 seconds), select
the EPO input polarity, “+P”(open circuit execute
EPO function) or “–P”(short circuit execute EPO
function)
③Confirm the setting. After selecting EPO input
polarity, press and hold the function setting
key for more than half a second (less than 2
seconds). Now, the setting is confirmed.
④ Exit from the setting interface. Press and hold
function setting key for more than half a second
(less than 2 seconds), exit from the setting interface
and return to main interface.

Frequency
Converter mode
setting（7）

①Enter the setting interface. Press and hold the
function setting key for more than 2 seconds, then
come to setting interface, Press and hold the scroll
key for more than half a second(less than 2
seconds), select the function setting, choose output
frequency setting interface, the letters “OPF” will
flash.
② Enter the output frequency of converter mode
setting interface. Press and hold the function setting
key for more than half a second (less than 2
seconds) , the letters “OPF” will stop flashing. The
letters below the “OPF” will flash. Press and hold
the scroll key for more than half a second (less
than 2 seconds), select the output frequency,
“50Hz”(output fixed to 50Hz and active converter
mode) or “60Hz”(output fixed to 60Hz and active
converter mode) or “IPF”(inactive converter mode
and active normal mode)
③ Confirm the setting. After selecting converter
mode output frequency, press and hold the function
setting key for more than half a second (less than 2
seconds). Now, the setting is confirmed.
④ Exit from the setting interface. Press and hold
function setting key for more than half a second
(less than 2 seconds), exit from the setting interface
and return to main interface.

28

Table 7. Operating Modes

Mode

Description

Indicator

Line Mode

The inverter green LED is on.
When input AC mains is in line with

the working conditions, UPS will work
in line mode, charge the battery and
protect the load.

Battery

Mode

Both the inverter green LED and
battery yellow LED are on, the buzzer
beeps once every 4 seconds. The
warning red LED is on when beeping.
When the mains power down or
instable, UPS will turn to battery mode
at once. If the mains recovers, the UPS
will transfer to line mode.
If battery low alarm activates, the
indicator of flashes. If battery
voltage reaches low limit, UPS will turn
off to protect the battery. UPS will
auto-restart when the mains recover.

NOTE：The back up time of battery
mode is subject to the load and EBP
numbers. Battery remaining time
displayed on the LCD may not be
accurate.

Bypass Mode

Bypass yellow LED is on, the buzzer
beeps once every 2 minutes. The
warning red LED is on when beeping,
LCD displays are according to the
exact load and battery capacity.
Bypass tolerance can be set by LCD.

Under below conditions, the UPS will
transfer to bypass mode:

● BPS on set by user through LCD,
and the UPS is turned off.

● BPS on set by user through LCD,
and the UPS is plugged into utility but
not turned on.

● Overload on line mode or ECO
mode.

NOTE：When in bypass mode , the
load is not protected.

29

ECO Mode

Both the inverter green LED and
bypass yellow LED are on.
When ECO enabled and the utility is in
range, the UPS will work on ECO
mode. If the utility in out of ECO range
but still in Line range, the UPS will
transfer to line mode.
Utility tolerance of ECO mode can be
set。

Fault Mode

When the UPS has fault. The warning
red LED is on and the buzzer beeps.
The UPS will turn to fault mode. The
UPS cuts off the output and the LCD
display fault codes. At the moment,
you can press the mute key to make
the buzzer stop beeping temporarily
to wait for maintenance. You can also
press the OFF key to shut down the
UPS when confirm that there is no
serious fault.
NOTE: As for corresponding
information of the fault code, please
refer to Table 23 Fault Code.

Standby Mode

When UPS is plugged into line and not
turn on, the UPS will work in standby
mode to charge the battery. No
indicator displays on this mode.

UPS Turn on and Turn off

Start up operation

Turn on the UPS in line mode

1. Once mains power is plugged in, the UPS will charge the battery, at the moment, the LCD shows

that the output voltage is 0, which means the UPS has no output. If it is expected to have the
output of bypass, you can set the bps “ON” by LCD setting menu.

2. Press and hold the ON key for more than half a second to start the UPS, then it will start the

inverter.

3. Once started, the UPS will perform a self-test function, LED will light and go out circularly and

orderly. When the self-test finishes, it will come to line mode, the corresponding LED lights, the
UPS is working in line mode.

Turn on the UPS by DC without mains power

1. When mains power is disconnected, press and hold the ON key for more than half a second to

start UPS.

30

2. The operation of the UPS in the process of start is almost the same as that when mains power is
in. After finishing the self-test, the corresponding LED lights and the UPS is working in battery
mode.

Turn off operation

Turn off the UPS in line mode

1. Press and hold the OFF key for more than half a second to turn off the UPS and inverter.

2. After the UPS shutdown, the LEDs go out and there is no output. If output is needed, you can set

bps “ON” on the LCD setting menu.

Turn off the UPS by DC without mains power

1. Press and hold the OFF key for more than half a second to turn off the UPS.

2. When turning off the UPS, it will do self-testing firstly. The LEDs light and go out circularly and

orderly until there is no display on the cover.

UPS self-test/mute test operation.

1. When the UPS is in line mode, press and hold the self-test/mute key for more than 1 second, the

LEDs light and go out circularly and orderly. The UPS comes to self-test mode and tests its status. It
will exit automatically after finishing testing, and the LED indication will go back to previous status.

2. When the UPS is in battery mode, press and hold the self-test/mute key for more than 1 second,

the buzzer stops beeping. If you press and hold the self-test/mute key for one more second, it will
restart to beep again.

Configuring Battery Settings

Set the UPS for the number of EBPs installed.

To ensure maximum battery runtime, configure the UPS for the correct number of EBPs, refer to
Table 8 for the appropriate setting of battery numbers and type. Use the up and down scroll keys
to select the number of battery strings according to your UPS configuration:

Table 8. Battery number Configuration

All UPS and EBP Cabinets

Number of Battery Strings

UPS only (internal batteries)

1（default）

UPS+1EBP

3

UPS+2EBPs

5

UPS+3EBPs

7

UPS+4EBPs

9

NOTE The UPS contains one battery string; each EBP contains two
battery strings.

31

CAUTION

● The following process must be performed if the UPS is connected with generator.

● First, turn on the generator, after it runs stably connect output power of the

generator to UPS input terminal, then turn on the UPS. After the UPS is turned on,
please connect load one by one.

● It is recommended that the generator capacity is as twice as the UPS rated capacity.

● You had better not use the ECO mode when the quality of the input AC mains is not

good.

5 Communication

This section describes the:

● Communication ports (RS-232 and USB)

● Connectivity cards

● Emergency Power-off (EPO)

● Load Segments

● UPSilon2000 Power Management Software

FIG.17

FIG.18

Communication Options and Control Terminals

Installing Communication Options and Control Terminals

To install the communication options and control terminals:

1. Install the appropriate connectivity card and/or necessary cable(s) and connect
the cables to the appropriate location.

32

2. Route and tie the cable(s) out of the way.

3. Continue to “Operation” to start up the UPS.

Communication Options

The UPS has serial communication capabilities through the USB and RS-232
communication ports or through a connectivity card in the available communication
bay. The UPS supports two serial communication devices according to the following
table:

NOTE：The communication speed of the RS232 port is fixed at 2400 bps.

RS-232 and USB Communication Ports

To establish communication between the UPS and a computer, connect your
computer to one of the UPS communication ports using an appropriate
communication cable (not supplied). See FIG. 17, 18 for the communication port
locations.
When the communication cable is installed, power management software can
exchange data with the UPS. The software polls the UPS for detailed information on
the status of the power environment. If a power emergency occurs, the software
initiates the saving of all data and an orderly shutdown of the equipment. The cable
pins for the RS-232 communication port are identified in FIG.19 and the pin
functions are described in Table 9.

FIG.19 RS-232 Communication Port (DB-9 Connector)

Table 9. RS-232 Communication Port Pin Assignment

33

Pin Number Function Definition Direction from the UPS

1、4、6、7、8、9 No use --

2 R×D(Transmit to external device) Out

3 TxD (Receive from external device) In

5 GND (Signal common) --

Connectivity Cards

Connectivity cards allow the UPS to communicate in a variety of networking
environments and with different types of devices. The UPS has one available
communication bay for the following connectivity cards:

● Web/SNMP Card - has SNMP and HTTP capabilities as well as monitoring

through a Web browser interface; connects to a twisted-pair Ethernet (10/100BaseT)
network. In addition, a Environmental Monitoring Probe can be attached to obtain
humidity, temperature, smoke alarm, and security information.

● Relay Interface Card - has isolated dry contact relay outputs for UPS status:

Utility failure, Low battery, UPS alarm/OK, or On bypass.

See FIG. 18, 19 for the location of the communication bay.

FIG.20 Optional Connectivity Cards

NOTE：Before installing the connectivity card , please remove the clip from the bay.

Refer to the user’s manual of the appropriate cards.

Emergency Power-off

EPO is used to shut down the UPS from a distance. This feature can be used for
shutting down the load and the UPS by thermal relay, for instance in the event of
room over temperature. When EPO is activated, the UPS shuts down the output and
all its power converters immediately. The UPS remains on to alarm the fault.

There is also a front panel EPO option for user to initial EPO function by pressing the
three switches on the front panel together. When the three switches are pressed
down at the same time, the EPO function will be active, UPS will shut down and the
buzzer will long beep. Pressing startup switches will not turn on the UPS. By pressing
the three switches together and also pressing the off switches the UPS will return to
normal status and the EPO function will be deactivated.

WARNING

The EPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This circuit
must be separated from any hazardous voltage circuits by reinforced insulation.

34

CAUTION

● The EPO must not be connected to any utility connected circuits. Reinforced

insulation to the utility is required. The EPO switch must have a minimum rating of
24 Vdc and 20 mA and be a dedicated latching-type switch not tied into another
circuit. The EPO signal must remain active for at least 250 ms for proper operation.

● To ensure the UPS stops supplying power to the load during any mode of

operation, the input power must be disconnected from the UPS when the
emergency power-off function is activated.

NOTE For Europe, the emergency switch requirements are detailed in Harmonized
document HD-384-48 S1, “Electrical Installation of the Buildings, Part 4: Protection
for Safety Chapter 46: Isolation and Switching.”

EPO Connections

Wire Function Terminal Wire Size Rating Suggested Wire Size

EPO L1

4–0.32 mm2 (12–22 AWG) 0.82 mm2 (18 AWG)
L2

NOTE Leave the EPO connector installed onto the EPO port of the UPS even
if the EPO function is not needed.

See FIG. 17, 18 for EPO location. FIG. 21 shows a schematic of the EPO connector
contacts.

FIG.21 EPO Connections

You can set the EPO polarity. See the“EPO Input Polarity”setting in“User Settings”.

NOTE Depending on user configuration, the pins must be shorted or opened to keep
the UPS running. To restart the UPS, reconnect (re-open) the EPO connector pins and
turn on the UPS manually. Maximum resistance in the shorted loop is 10 ohm.
NOTE Always test the EPO function before applying your critical load to avoid
accidental load loss.

EPO

35

UPSilon2000 Power Management Software

Each UPS ships with UPSilon2000 Power Management Software. To begin installing
UPSilon2000 software, see the instructions accompanying the Software Suite CD.

NOTE Install UPSilon2000 power management software with the serial number

attched on the cover of the CD. When running the monitor software, choose

appropriate communication port. If using RS232, choose COM1/2 and Megatec

protocol. If using USB, choose megatec USB.

UPSilon2000 software provides up-to-date graphics of UPS power and system data
and power flow. It also gives you a complete record of critical power events, and it
notifies you of important UPS or power information. If there is a power outage and
the UPS battery power becomes low, UPSilon2000 software can automatically shut
down your computer system to protect your data before the UPS shutdown occurs.

6 UPS Maintenance

This section explains how to:

 Care for the UPS and batteries
 Replace Extended Battery Packs (EBPs)
 Test new batteries

 Recycle used batteries or UPS

UPS and Battery Care

For the best preventive maintenance, keep the area around the UPS clean and dust‐
free. If the atmosphere is very dusty, clean the outside of the system with a vacuum
cleaner. For full battery life, keep the UPS at an ambient temperature of 25°C (77°F).

NOTE The batteries in the UPS are rated for a 3–5 year service life. The length of
service life varies, depending on the frequency of usage and ambient temperature.
Batteries used beyond expected service life will often have severely reduced
runtimes. Replace batteries at least every 5 years to keep units running at peak
efficiency.

Storing the UPS and Batteries

If you store the UPS for a long period, recharge the battery every 6 months by
connecting the UPS to utility power. The internal batteries charge to 80% capacity in
less than 5 hours. However, we recommends that the batteries charge for 48 hours
after long-term storage.. Check the battery recharge date on the shipping carton
label. If the date is expired and the batteries were never recharged, do not use the
UPS. Contact your service representative.

36

Replacing Batteries

NOTE DO NOT DISCONNECT the batteries while the UPS is in Battery mode.

。

The EBP can be replaced when UPS is ON， but be aware that if the utility fails at that
time , the load of the UPS may NOT be protected. If you prefer to remove input
power to change the batteries, see “UPS Turn on and Turn off”.

Replacing RT UPS and EBPS

1. If the battery fault, the following steps are provided for modular unit to replace the new battery

pack

2. 2. Remove the front cover of the battery box.

3. Remove the connection cables between battery box and UPS. Release the screw of the baffle of

the battery pack as the Fig.22 shows and remove the baffle from the left or right.

FIG.22 The Installation for baffle of battery pack

4. Grasp the handle in front of the battery pack, pull it out, and remove the battery pack as fig. 23

shown.

37

FIG.23 Remove the battery park

5. Hold the middle of the new battery pack and insert it. Once install the new battery pack, make

sure it is completely inserted into the chassis as fig 24 shows.

FIG.24 Installation for battery pack

Testing New Batteries

To test new batteries:

1. Plug the UPS into a power outlet for 48 hours to charge the batteries.

2. Start up the UPS by pressing the start up combination button.

3. Press the battery test combination button to activate the battery test.
The UPS starts a battery test if the batteries are fully charged, the UPS is in Normal mode with no
active alarms, and the bypass voltage is acceptable.
During the battery test, the UPS transfers to Battery mode and discharges the batteries for 10
seconds. The LED indicators of the front cover stop cycling when the test is completed.

Recycling the Used Battery or UPS

Contact your local recycling or hazardous waste center for information on proper
disposal of the used battery or UPS.

38

WARNING

Do not dispose of the battery or batteries in a fire. Batteries may explode. Proper
disposal of batteries is required. Refer to your local codes for disposal requirements.

Do not open or mutilate the battery or batteries. Released electrolyte is harmful to
the skin and eyes. It is toxic.

CAUTION

Do not discard the UPS or the UPS batteries in the trash. This product contains
sealed,lead‐acid batteries and must be disposed properly. For more information,
contact your local recycling/reuse or hazardous waste center

CAUTION

Do not discard waste electrical or electronic equipment (WEEE) in the trash. For
proper disposal, contact your local recycling/reuse or hazardous waste center.

7 Specifications

Model Specifications

This section provides the following specifications:

 Communication options
 Model lists
 Weights and dimensions
 Electrical input and output
 Environmental and safety
 Battery

Table 10. Communication Options (All Models)

Communication Bay

Communication bay for connectivity cards

Compatible Connectivity Cards

SNMP card / Contact Relay Card

Communication Ports

RS232 (DB-9): 2400 bps

USB

Table 11. Extended Battery Model

EBP Model

Configuration

Battery Voltage

For Power Ratings

1000 EBP
1500 -EBP
2000 -EBP
3000 -EBP

RT

24Vdc

36Vdc

48Vdc

72Vdc

1000 VA

1500 VA

2000 VA

3000 VA

Table 12. UPS Model List (All Models)

39

Model

Power Level

Rear Cover Diagram

NUPS23-1000

1000 VA / 900W

FIG. 17

NUPS23-1500

1500 VA/ 1350W

FIG. 17

NUPS23-2000

2000 VA / 1800W

FIG. 18

NUPS23-3000

3000 VA / 2700W

FIG. 18

Table 13. Product Performance

Model NUPS 23-

1000

1500

2000

3000

Rated capacity

900W/1000VA

1350W/1500VA

1800W/2000VA

2700W/3000VA

input

input

Single phase and ground

Voltage range

55±5V～145±5V (load≤60%);

60±5V～145±5V (60%<load≤70%);

70±5V～145±5V (70%<load≤80%);

80±5V～145±5V (load>80%);

Nominal

Frequency range

50/60 Hz ±0.5Hz auto sensing

46Hz-54Hz±0.5Hz@50HZ or 56Hz-64Hz±0.5Hz@60HZ

Power factor

≥0.98

Current harmonic

< 10% (100％ linear load )

output

Output style

Single phase and ground

Rated voltage

100/108/110/115/120Vac

Power factor

0.9

Voltage precision

±2%

Output

Frequency

Line

mode

1、When input frequency is in the range, the output

frequency synchronized with the utility in AC mode.

2、When input frequency is out of the range, the output

frequency is (50/60 ± 0.2) Hz when in battery mode

Battery

(50/60 ± 0.2) Hz

Crest ratio

3:1

Transfer time

Mains ←→ battery = 0ms

Mains ←→ bypass ＜ 4ms

Overload

capacity

>110%, 30s turn to bypass mode

>150%, 300ms turn to bypass mode

Efficiency

Line

mode

Full load ≥ 86%

40

Battery

mode

Full load ≥ 84%

Output voltage

distortion

≤3% (100％ linear load )

≤5% (100％ nonlinear load )

Battery

Input battery

voltage

24VDC

36VDC

48VDC

72VDC

Internal battery

capacity

2 3 4

6

Internal battery

Sealed VRLA

Charge current

（A）

1.4

1.4

1.4

1.4

Table 14. Work Environment

Model

1000-3000 series

Ambient Temperature

0～40C

Relative humidity

0～95% non-condensing

Altitude

＞1500m, lower the rated power for use

Store temperature

-25～55C

Table 15. Mechanical Specification

Model

Battery voltage

Dimension W*D*H (mm)

Net weight /Gross

Weight (kg)

NUPS23-1000

24VDC

440*430*86.5

11.5/15.1

NUPS23-1500

36VDC

14.5/18.1

NUPS23-2000

48VDC

440*572*86.5

17.5/22.2

NUPS23-3000

72VDC

440*692*86.5

19.8/25.5

Table 16. Battery Runtimes (in Minutes) at 100% Load (ALL Models)

Model

Internal

Batteries

+ 1 EBP

+ 2 EBPs

+ 3 EBPs

+ 4 EBPs

1000

>3

<17

25

40

53

1500

>3

<17

25

40

53

2000

>3

<17

25

40

53

3000

>3

<17

25

52

69

41

NOTE Battery times are approximate and vary depending on the load
configuration and battery charge.

Table 17. Battery

Internal Batteries

EBPs

Battery

Configuration

1000 VA: 24 Vdc (2,12V, 9 Ah)

1500 VA: 36 Vdc (3,12V, 9 Ah)

2000 VA: 48 Vdc (4,12V, 9 Ah)

3000 VA: 72 Vdc (6,12V, 9 Ah)

24 Vdc (2 x 2,12V, 9 Ah)

36 Vdc (2 x 3,12V, 9 Ah)

48 Vdc (2 x 4,12V, 9 Ah)

72 Vdc (2 x 6,12V, 9 Ah)

Fuses

(2) 30A/250Vdc fuses

(4) 30A/250Vdc fuses per EBP

Type

Sealed, maintenance-free, valve-regulated, lead-acid, with minimum 3-year

float service life at 25°C (77°F)

Monitoring

Advanced monitoring for earlier failure detection and warning

Recharge Time

(to 90%)

8 hours to 90%

Battery Port

External six-pole Anderson connector on UPS for connection to EBP

8 Troubleshooting

The following messages are the information that users would find on UPS when it meets some
problems. Users can judge if the fault is caused by external factors and know how to deal with it by
making full use of the information.
Fault indicator on, indicates that the UPS has detected some faults. Buzzer beeps, indicates that UPS
need to be paid attention to, if beeps for a long time, it means that there is something wrong with the
machine. If you need help, contact our service department, the following messages should be
provided for analysis:

◆UPS MODEL NO. and SERIAL NO.

◆Date of fault happened

◆Detailed description of the problem

◆Alarms and codes

The following table describes typical alarm conditions.

Table 18.

42

Fault

Cause

Solution

The “INPUT”
letters on LCD
display section
flashes

Anti-connection of
mains live and neutral
or mains is out of
range

Re-connect the input power cable
and make a correct connection

Battery capacity
indicator flashes

Battery low voltage or
battery disconnected

Check UPS battery, connect
battery well, if battery damaged,
replace it

Mains normal, but
UPS has no input

UPS input breaker
open circuit

Press the breaker for reset

Short back up time

Battery not fully
charged

Keep UPS connecting with mains
power for more than 8 hours,
recharge battery

UPS overload

Check the usage of loads, remove
some redundant devices

Battery aged

When replace battery, contact
franchiser to get battery and
relative assembly

UPS doesn’t
startup after
pressing the ON
key

Didn’t press the
combination keys of
“on”

Press the two keys at the same
time

UPS has no battery
connected or battery
voltage low and too
many loads connected

Connect UPS battery well, if
battery voltage low, please turn
off UPS and remove some loads,
then start UPS

Fault occurs inside

Contact supplier for servicing

The icon of
charger status on
LCD display
flashes and buzzer
beeps once per
second

Charger doesn’t work
normally or battery
aged

Contact supplier for servicing

The following table describes typical faulty conditions.

Table 19. Fault code for RT type

43

Fault Kind

Fault type

Operating Mode before fault

Byp

Mode

Line

Mode

Bat

Mode

BatTest

Mode

Eco

Mode

Bus Fault

P Bus High

05

01

40

80

N Bug High

25

21

41

81

P Bus Low

35

31

70

90

N Bus Low

55

51

71

91

Bus unbalance

82

83

84

85

Soft fail

62

Inv Fault
High 04

24

42

86

Low 14

34

52

96

Soft fail

63

Bus discharge
fail

61

Over Heat

33

06

08

43

53

INV short

16

02

44

73

OverLoad

03

09

45

65

Fan Fault

36

28

38

46

66

Charger Fault

07

17

27

Bat Over

11

12

13

InvRelaySht

76

LineNTCBreak

98

Shutdown
Fault 97