NXT Power NPTU800-OR-N User manual

NPTU800-OR-N
NPTU1100-OR-N
NPTU1500-OR-N
Intelligent True On-Line UPS
For Corporate and IT Users
User Manual

1
Table of Contents
1.Safety Instructions and Storage/ Battery Care .....................................................2
1.1 Safety Instructions .................................................................................2
1.2 Storage / Battery Care ..............................................................................5
2.Product Introduction..............................................................................................6
2.1 General Characteristics ............................................................................6
2.2 Special Features.......................................................................................7
3.UPS Functional Descriptions ................................................................................8
3.1 Front Panel Display ..................................................................................8
3.2 Rear Panel..............................................................................................11
3.3 Communication Port Explanation ...........................................................12
4.Installation and Operation...................................................................................13
4.1 Unpacking ...............................................................................................13
4.2 Selecting Installation Position .................................................................16
4.3 Battery Connecting Procedure ...............................................................17
4.4 Battery Replacement Procedure ............................................................19
4.5 Operation ................................................................................................21
5.UPS System Block Diagram ...............................................................................33
6.Maintenance Guide.............................................................................................34
6.1 Troubleshooting ......................................................................................34
6.2 Error Codes and Their Meanings ...........................................................36
6.3 Maintenance ...........................................................................................36
7.Communication Software....................................................................................37
7.1 Hardware Setup......................................................................................37
7.2 Software Installation ...............................................................................37
8.Optional Communication Cards..........................................................................38
8.1 R2E (second RS-232) card.....................................................................38
8.2 USE (USB) card......................................................................................38
8.3 DCE (Dry Contact) card..........................................................................39
8.4 SNMP Cards ...........................................................................................40
9.Specifications Convertible Type (Rack)..............................................................41

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1. Safety Instructions and Storage/ Battery Care
1.1 Safety Instructions
SAVE THESE INSTRUCTIONS.
This manual contains important instructions that should be followed during
installation and maintenance of the UPS and batteries.
1. Do not open the case as there are no serviceable parts inside. Opening the
case will void your warranty and introduces the risk of electric shock.
2. Do not try to repair the unit yourself. Doing so will void your warranty.
Contact your local supplier for repairs.
3. If liquids spill onto the UPS or foreign objects drops into the unit the UPS
could be damaged, users could be subject to electric stock, and the
warranty will become void.
4. Do not install the UPS in an environment with excessive heat, smoke, or
hazardous or flammable gas.
5. This UPS is equipped with an EMI filter. To prevent potential leakage of
current hazards, ensure that the AC mains supply is securely grounded.
Small leakage currents are generated by the EMI filter in the UPS it is
necessary to double check that the ground wire of the UPS is properly
grounded before connecting the UPS to the AC mains
6. This UPS is designed to be installed and commissioned in an, controlled
environment as follows:
- Ensure that the UPS is installed within the proper environmental range.
(0-40°C and 0-90% non-condensing humidity). High ambient temperature
will reduce battery life.
- Do not install the UPS in direct sunlight. Your battery warranty may be
void if the batteries fail due to excessive heat.
- Do not install the UPS in an inflammable or otherwise hazardous
environment.
-Avoid vibration and areas subject to physical impact.
- Avoid any area with sparks.
- Dusty, corrosive, and salty environments can damage any UPS.
- Install the UPS indoors as it is not designed for installation outdoors.
7. To prevent overheating of the UPS, keep all ventilation openings free from
obstruction, and do not place anything on top of the UPS. Keep the UPS
rear panel 20 cm (8 inches) away from the wall or other obstructions.
8. Install the UPS in a ventilated area, ideally exchanging 5 m3of air per hour,
because the chemical reaction during battery charging causes trace gas

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production. If the batteries suffer breakage electrical arcing could occur in
the UPS interior.
9. If the product emits a strange noise or smell please immediately stop using
the product and contact your dealer for maintenance.
10. Always switch off the UPS and disconnect the batteries when relocating
the UPS. Be aware that, even when disconnected, charged batteries
present a possible electric shock hazard.
11. The UPS should be recharged every 2-3 months if unused. If this is not
done, then the warranty will be null and void. When installed and being
used the batteries will be automatically recharged and kept in top condition.
12 Make sure that the AC utility outlet is correctly grounded.
13. Ensure that the input voltage of the UPS matches the utility supply voltage.
Use a certified input power cable with the correct plugs and sockets for the
system voltage.
14. To ensure safety in all applications where a UPS is hard wired to the
electrical supply, ensure that the system is installed by a qualified electrical
contractor.
15. The UPS has its own internal energy source (battery). Should the battery
be switched on when no AC power is available there could be voltage at
the output terminals.
16. Make sure that the AC utility outlet is correctly grounded
17. Install the UPS away from objects that give off excessive heat and areas
that are excessively wet.
18. The battery will discharge naturally if the system is unused for a long time
19. This UPS supports electronic equipment in office, telecommunication,
process-control, and security applications. Non-authorized
technicians are not allowed to install the UPS in the following areas.
a. Medical equipment directly related to human life
b. Elevators, subway systems, or any other equipment related to human
safety.
c. Public systems or critical computer systems.
20. The UPS offers a CVCF (Constant Voltage Constant Frequency) setting
function.
a. For correct setting and wiring please contact with your local utility agent.
b. Do not set it yourself or your warranty will be void.
21. This UPS has been designed and constructed to protect your assets from
the wide range of power disturbances experienced on utility power lines
today. It is your insurance for a reliable, clean, and stable voltage supply.
It is worth taking care to install the system correctly and to have it
maintained correctly by your local dealer.

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22. Do not try to replace the battery yourself. Doing so will void your warranty.
Contact your local supplier for repairs.
23. The UPS is intended for installation in a controlled environment.
24. Install the UPS so that it is not likely to be contacted by people.
25. The maximum ambient operating temperature is 40°C or equivalent.
26. Units are considered acceptable for use in a maximum ambient 40°C
27. CAUTION - RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN
INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO
THE INSTRUCTIONS.
28. CAUTION - Do not dispose of batteries in a fire. The batteries may
explode.
29. CAUTION – Do not open or mutilate batteries. Released electrolyte is
harmful to the skin and eyes. It may be toxic.
30. CAUTION– A battery can present a risk of electrical shock and high short
circuit current. The following precautions should be observed when
working on batteries:
1) Remove watches, rings, or other metal objects.
2) Use tools with insulated handles.
3) Wear rubber gloves and boots.
4) Do not lay tools or metal parts on top of batteries.
5) Disconnect charging source prior to connecting or disconnecting battery
terminals.
6) Determine if battery is inadvertently grounded. If inadvertently grounded,
remove source from ground. Contact with any part of a grounded battery
can result in electrical shock. The likelihood of such shock can be reduced
if such grounds are removed during installation and maintenance
(applicable to equipment and remote battery supplies not having a
grounded supply circuit).
31. External battery cabinet installation instructions,
please refer to " Battery Bank Installation User's MANUAL"
32. This UPS may be provided with maximum three extension battery
cabinets or equivalent.
33. For PLUGGABLE EQUIPMENT, the socket-outlet shall be installed near
the equipment and shall be easily accessible.

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1.2 Storage / Battery Care
If the UPS is unused for an extended period, it must be stored in a
moderate climate. The batteries should be charged for 12 hours every three
months by connecting the UPS to the utility supply and switching on the input
breaker located on the UPS rear panel. Repeat this procedure every two
months if the storage ambient temperature is above 25°C.

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2. Product Introduction
2.1 General Characteristics
1. True on-line technology continuously supplies your critical device with
stable, regulated, transient-free, pure-sine-wave AC power.
2. High-efficiency PWM sine-wave topology yields excellent overall
performance.
3. The high crest factor of the inverter handles all high in-rush current
loads without the need to upsize the power rating.
4. User-friendly plug-and-play design allows hassle-free installation.
5. Built-in maintenance-free, sealed batteries minimize the need for
after-sales service.
6. To protect the unit from overloading, the UPS will automatically
switch to bypass mode in 30 seconds if loading is at 105% of rated
capacity. It will automatically switch back to inverter mode once the
overload condition ceases.
7. Should the output become short-circuited the UPS puts the system in
stand-by mode, provides visible and audible alarms, and cuts the
output supply automatically until the short circuit situation is resolved
manually.

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2.2 Special Features
1. This UPS is equipped with fully digital control logic for greater
functionality and enhanced power protection. Digital signal processing
(DSP) also provides the UPS with powerful communication capability,
which simplifies remote control and monitoring.
2. Our wide input voltage tolerance of 55-150 V allows under-voltage or
over-voltage correction without unnecessary battery drain and helps
extend battery life.
3. Our DC-start function ensures the start-up of the UPS even during
power outages.
4. Our smart battery management system extends the batteries’ life span.
5. Our Active Power Factor Correction control function constantly
maintains the UPS input power factor at > 0.98 for superb energy
efficiency.
6. Our Selectable Bypass input voltage tolerance (sensitivity low/high)
prevents under- or over-voltage being supplied to the loads in Bypass
mode. The selectable voltage ranges are (i) Bypass Sensitivity Low:
many selectable output voltages ±15% and (ii) Bypass Sensitivity High:
many selectable output voltages ±10%. For example, if the output
voltage setting is 120 V the Bypass Sensitivity Low range is 120 V
±15%, i.e., 102-138 VAC.
7. The UPS provides numerous configurable output voltages to match
various system voltages.
8. The UPS is designed to comply with various stringent international
standards for electromagnetic interference compatibility (EMC).

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3. UPS Functional Descriptions
3.1 Front Panel Display
3.1.1 NXT 1.5K < Convertible Type (Rack / Tower)> LCD panel
6 Button LCD Panel
Item
Sign
Description
LCD Display
Green LED lights up to indicate that the
utility input voltage is within nominal
range (90Vac~145Vac); the LED
flashes quickly to indicate that the utility
input voltage is within the acceptable
window (60Vac~90Vac).
Green LED lights up to indicate there is
an output available at the Programmable
Outlet 1 & Programmable Outlet 2.
Amber LED lights up to indicate the
Bypass Input is normal.
UPS Fault LED
UPS On/Alarm Silence

9
UPS OFF Switch
Special functions log in/out
Go to next display page
Go to previous display page or change
the setting of the UPS.
To re-confirm the change to the UPS
Setting
◎Manual Bypass: Press " ON-KEY” and " Up-KEY" key simultaneously
for approx. 3 seconds to transfer from "Inverter to Bypass" (the bypass LED
will continuously “flash “and the buzzer will beep intermediately on "Bypass
to Inverter", when the UPS is online Mode, and the Bypass Voltage Window
is Normal.

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3.1.2 LCD displayer description
Item
Sign
Description
1 Site Wiring Fault
2 Buzzer Silent
3 UPS Overloaded
4 UPS Working in specified mode*
5 UPS Fault or Abnormal Warning
6 UPS Flow Chart
7 3-Digit Measurement Display
8 Indicates the item being measured
9 Battery Abnormal
10 Battery Low
11 Testing

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3.2 Rear Panel
800VA/1100VA/1440VA 120V
INTE RFACE
AC OUTPUT
RS232USB EPO
INPUT
BREAKERAC INPUT
EXT.BAT.
IN
OUT
PHONE /DATA
PROTECTI ON
1
2
3
6 5 10 9
48
7
4
Not for telecommunication
(telephone) network
1. Emergency Power Off (EPO) / Remote ON/OFF (ROO)
Dry contact signal inputs
2. USB port
3. RS-232 port
4. Fan
5. External battery connector
6. Slot for optional communication cards*
7. Utility input power cord
8. Utility input circuit breaker
9. AC outlets (Program Relay)
10. Communication surge protection

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3.3 Communication Port Explanation
The UPS is equipped with a true RS-232 and USB communication port as
standard to provide communication with bundled UPS monitoring software for
remote monitoring of the UPS using a PC.
In addition, there are six optional interface cards available to meet various
communication needs: USB, EPO/ROO, DCE (dry contact relay card), R2E,
USE, and an SNMP/Web card. (Please see Chapter 8.)
All communication ports including optional cards can be active and used
simultaneously to monitor the UPS status. However, only one communication
interface at a time (the one with the highest priority) can control the UPS. The
priorities of these communication interfaces are as follows (highest priority first).
1) EPO/ROO input port
2) Optional interface card
3) USB
4) RJ11/RJ45 Communication surge protection
5) RS-232
3.3.1 True RS-232
The RS-232 interface must be configured as follows.
Baud Rate
2400 bps
Data Length
8 bits
Stop Bit
1
Parity
None
Pin Assignments:
3.3.2 EPO/ROO
Pin Assignments:
Pin 3: RS-232 Rx
Pin 2: RS-232 Tx
Pin 5: Ground
Function setting
：
1. EPO NC Shutdown UPS (default)
2. EPO NO Shutdown UPS
3. ROO NC Start-up UPS
4. ROO NO Start-up UPS
(this function setting by setting tool)

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4. Installation and Operation
Please read the Safety Instruction guide (pages 2 ~4) before installing the UPS.
4.1 Unpacking
Inspect the UPS upon receipt. The packaging is robust, but accidents and
damage may still occur during shipment. Notify the forwarder and dealer if there
is damage.
The packaging is recyclable and reusable.
1. After removing the packing foam please be careful handling the UPS
while it is still in the plastic bag. The plastic is slippery, and the UPS
could fall and injure you.
2. Check for the following standard package contents, in addition to the
UPS itself.
A. User Manual
B. NEMA 5-15P input cables (for UPS with NEMA
sockets only)
C. USB Cable
M3x6mm
x16
M4x8mm
x6
x2 x2
S3
x4 x1
C1

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4.1.1 Installation Instructions
Tower installation
A1
S1
Rack Mount installation
Warning: Do not use rack mount kit to carry UPS
Step 1
Step 2
S1
S1

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Step 3

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4.2 Selecting Installation Position
The UPS is heavy. Select a location sturdy enough to support the UPS
weight.
To ensure proper operation and long operating life, position the UPS
according to the following requirements.
1. Keep at least 20 cm (8 inches) of
clearance beyond the rear panel of the
UPS.
2. Do not block the air flow to the ventilation
louvers of the unit.
3. Ensure that the installation site is free
from excessive dust and the
ambient temperature and humidity
are within the specified limits.
4. Do not place the UPS in a dusty
or corrosive environment or near
any flammable objects.
5. This UPS is not designed for
outdoor use.

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4.3 Battery Connecting Procedure
Qualified Service Personnel Only
PLEASE READ ALL OF THE CAUTIONS AND THE WARNINGS BEFORE
ATTEMPING TO CONNECT THE BATTERY MODULE
Step 1
Step 2
12
12

18
Step 3
21

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4.4 Battery Replacement Procedure
Qualified Service Personnel Only
PLEASE READ ALL OF THE CAUTIONS AND THE WARNINGS BEFORE
ATTEMPING TO REPLACE THE BATTERY MODULE
Warning: Lead-acid battery could be drained and damaged by long-term self-
discharge naturally without maintenance.
Step 1
Step 2
1 2
1 2 3