Ablerex MSII-RT User manual

ablerex MSII-RT
Parallel Redundancy On-Line UPS
User’s Manual
6Kva
1
Table of Contents
1. Important Safety Instruction....................................................................2
1.1. An Important Notice................................................................................2
1.2. Storage Instruction .................................................................................4
2. Product Introduction ...............................................................................5
2.1. General Characteristics..........................................................................5
2.2. Symbols on the LCD Display Panel .......................................................7
2.3. Panel explanation...................................................................................9
2.4. Communication Port Explanation.........................................................11
3. Installation and Operation.....................................................................12
3.1. Unpacking.............................................................................................12
3.2. Selecting Installation Position...............................................................13
3.3. Installation of Casters Cover ................................................................14
3.4. Terminal Block Explanation..................................................................20
3.5. Operation Test and Installation Instruction...........................................27
4. Troubleshooting Guide.........................................................................38
4.1. Trouble Shooting..................................................................................38
5. Bundled Software Installation Guide....................................................40
5.1. Hardware Installation............................................................................40
5.2. Software Installation.............................................................................40
6. Customer Options Slots........................................................................41
6.1. All the below interface cards are with built-in EPO function.................41
6.2. R2E(2nd RS-232 ) card........................................................................41
6.3. RSE(RS-485) card................................................................................41
6.4. USE(USB) card ....................................................................................41
6.5. DCE(Dry Contact) card.........................................................................42
6.6. SNMP Cards.........................................................................................43
6.7. The Installation of those Interface Cards..............................................43
7. Hot Swappable Battery Replacement ..................................................45
8. Specifications .......................................................................................47

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1. Important Safety Instruction
1.1. An Important Notice
1.1.1. 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.
1.1.2. 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.
1.1.3. Make sure that the AC Utility outlet is correctly grounded.
1.1.4. Do not open the case, as there are no serviceable parts inside. Your
Warranty will be void.
1.1.5. Do not try to repair the unit yourself; contact your local supplier or your
warranty will be void.
1.1.6. Please make sure that the input voltage of the UPS matches the supply
voltage.
1.1.7. Use a certified input power cable with the correct plugs and sockets for
the appropriate voltage system.
1.1.8. To eliminate any overheating of the UPS, keep all ventilation openings
free from obstruction, and do not store "things" on top of the UPS. Keep
the UPS 30 cm away from the wall.
1.1.9. Make sure the UPS is installed within the proper environment as specified.
(0-40℃and 30-90% non-condensing humidity)
1.1.10. Do not install the UPS in direct sunlight. Your warranty may be void if the
batteries fail.
1.1.11. Install the UPS indoors as it is not designed for installation outdoors.
1.1.12. Dusty, corrosive and salty environments can do damage to any UPS.
1.1.13. Install the UPS away from objects that give off excessive heat and areas
that are excessively wet.
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1.1.14. If liquids are split onto the UPS or foreign objects dropped into the unit,
the warranty will be null and void.
1.1.15. The battery will discharge naturally if the system is unused for any length
of time.
1.1.16. It 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.
1.1.17. This UPS supports electronic equipment in offices, telecommunications,
process control, medical and security applications. Non-authorized
technician is not allowed to install the UPS in the following areas.
a. Medical equipment directly related to human life
b. Elevator, Metro (Subway) system or any other equipment related to
human safety.
c. Public system or critical computer systems.
1.1.18. Do not install the UPS in an environment with sparks, smoke or gas.
1.1.19. Make sure the UPS is completely turned off when moving the UPS from
one place to another. It might cause electrical shock if the output is not cut
completely.
1.1.20. The Maintenance Bypass Switch is optional, which is built onto a separate
Rack Tower cabinet with the galvanic isolation transformer (GTM-WS) or
RacPDU-230 as optional.
1.1.21. The UPS also offers CVCF (Constant Voltage Constant Frequency)
setting function, but it shall be done by a qualified technician.
a. For correct setting and wiring, please contact with your local agent.
b. Do not do it by yourself; otherwise, your warranty will be void.
1.1.22. This UPS has been designed and constructed to protect your assets from
the wide range of power aberrations experienced on Utility power lines
today. It is your insurance for 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.
1.1.23. SAVE THESE INSTRUCTIONS - This Manual Contains Important
Instructions that should be followed during Installation and Maintenance of
the UPS and Batteries.
1.1.24. Intended for Installation in a Controlled Environment.
1.1.25. CAUTION - A disconnect switch shall be provided by others for ac output
circuit. To reduce the risk of fire, connect only to a circuit provided with

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branch circuit over-current protection for 30 amperes rating in accordance
with the National Electric Code, ANSI/NFPA 70.
1.1.26. CAUTION - To reduce the risk of fire, unit input connect only to a circuit
provided with branch circuit over-current protection for 40 amperes rating
in accordance with the National Electric Code, ANSI/NFPA 70.
1.1.27. Use No. 10 AWG, 60°C copper wire and 22.1 lb-in Torque force when
connecting to terminal block.
1.2. Storage Instruction
For extended storage through moderate climate, the batteries should be
charged for 12 hours every 3 months by plugging the UPS power cord into the
wall receptacle and turn on input breaker on front panel. Repeat this
procedure every 2 months under high temperature environment.
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2. Product Introduction
2.1. General Characteristics
2.1.1. True online architecture continuously supplies in your critical device with a
stable, regulated, transient-free pure sine waveAC Power.
2.1.2. 20KHz PWM sine-wave topology yields an excellent overall performance.
The high crest factor of the inverter handles all high-inrush current loads
without a need to upgrade the power rating.
2.1.3. Multi-functional LCD/LED panel may display various status of the UPS.
The LED display may show UPS working status, Utility Status and UPS
Abnormal status, in the mean while, the LCD display may show
Input/Output Voltage, Frequency, Load Status, Inner cabinet temperature,
and Abnormal Phenomenon.
2.1.4. To protect the unit from overloading, it automatically switches to bypass
mode in 160 seconds~ 40ms if loading is at 105%~ 150% of rating and in
case of overloading at 150% of rating, it switches to bypass mode
immediately. It will automatically switch back to inverter mode once
overload condition ceases.
2.1.5. Should the output becomes short-circuit, the UPS holds the system and
cuts the output automatically till the short circuit situation is removed
manually.
2.1.6. Should the unit become overheated, the internal thermal Switch will detect
the heat and switch to bypass mode and vice versa.
2.1.7. Fully digitalized control circuit built in the UPS may upgrade the
functionality Of the UPS as well as reach a high-level protection of the
UPS. Through powerful Communication capability built, it enhances its
ability for remote control and monitoring easily.
2.1.8. Maintenance-free sealed-type battery minimizes after-sales service.
2.1.9. Maintenance bypass switch — it provides an easy and safe
troubleshooting or maintenance function when the Utility is normal.
2.1.10. Four different working modes, such as Normal, ECO, CF50 and CF60 are
provided, which may be widely used in a variety of applications.
2.1.11. DC-start function makes sure of the start-up of UPS during power outages.

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2.1.12. Revolutionary battery management circuit analyzes battery discharging
status to adjust battery cut-off point and extend the life of batteries.
2.1.13. Intelligent temperature-controlled fan may not only extend the life of the
fan, but also reduce annoying noise because of sudden fan spin. It
remains your office quiet and comfortable as usual.
2.1.14. When UPS is out of order, you may read out the possible fault reason
from the LCD screen directly, which may reduce down unnecessary repair
task a lot.
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2.2. Symbols on the LCD Display Panel
Item Symbol Description
1 LINE Utility or Bypass Source
2 Battery Low
3
Battery Abnormal
4 UPS Overloading
5 UPS Working in specified mode*
6 A Blackout Transfer occurred in UPS Output
7 Bypass Input Abnormal, UPS fails to transfer
to bypass, Bypass Abnormal at ECO mode
8 Utility Input Abnormal
9 OFF UPS Shutoff
10 LINE OFF UPS Abnormal Lock
11 UPS Flow Chart
12 4 Digits Measurement Display
13 Indicate the item desired to be measured
14 UPS ON Switch or Alarm Silence
15 UPS OFF Switch
16 Previous Page or Setting Change

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17 Next Page
18 Special Function Log in /out
19 Enter or Reconfirmed
20 Utility Input Normal LED
21 Bypass Input Normal LED
22 UPS under Redundancy Mode
23 UPS under ECO Mode
24 UPS Fault or Abnormal Warning LED
25 EPO Emergency Power Off
26 Er05 Battery Weak or Dead
27 Er06 Output Short Circuit
28 Er10 Inverter Over-current
29 Er11 UPS Overheat
30 Er12 UPS Output Overloading
31 Er15 Wrong Procedure to Enter Maintenance Mode
32 Er24 CVCF mode with Bypass input
33 Er** Other Error code
*The specified modes include Normal mode, ECO mode, CVCF mode, etc..
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2.3. Panel explanation
2.3.1. Front Panel Function Explanations
LCD Display
Green LED steadily lights up to indicate that the Utility input voltage is within
the window; the LED flashes flickeringly to indicate that the Utility input
voltage is within the acceptable window.
Green LED lights up to indicate Bypass Input is normal.
Green LED lights up to indicate the UPS has the capability to run under
redundancy mode.
UPS is working under ECO (Economic, Line-interactive) mode.
UPS Fault or Abnormal
UPS ON/Alarm Silence
UPS OFF Switch
Special functions log in/out

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Go to next page
Go to previous page or change the setting of the UPS.
To re-confirm the change of UPS Setting
2.3.2. Rear Panel Explanation
A Terminal Resistor for Parallel function
B RS232 Port
C External Battery Connector
D Utility Input Breaker
E CAN Bus Connection Port for Parallel System
F Maintenance Bypass Switch and Galvanic Tx. Temperature Sensor
G Cooling Fan
H Utility Input &UPS Output Power Connector Connection Port
I Customer Options Slot 1
J Customer Options Slot 2
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2.4. Communication Port Explanation
The Communication port on the UPS provides true RS232 type to
communicate with UPS software to remote monitoring the power and UPS status.
With optional interfaces cards, which contains R2E(2nd RS232 plus EPO),
RSE(RS485 plus EPO), USE(USB plus EPO), DCE(Dry Contact plus EPO), as
well as SNMP/ card, you may combine them according to your demand. However,
the R2E card, RSE card and USE card are prohibited to be used Simultaneously.
The bundled software of the UPS is compatible with many operating systems
such as Windows 98, & 2000, ME, NT and XP. For other applications like Novell,
NetWare, Unix, Linux, please contact your local distributor for a proper solution.
When the optional interface cards are used with onboard RS232 port in
communication, the shutdown command at the DCE card & also the EPO signals
will get the highest priority in control command, then the SNMP/WEB card , then
R2E, RSE and USE get the lowest priority.
2.4.1. True RS232 type
2.4.1.1 The RS232 interface settings
The RS232 interface shall be set as follows:
Baud Rate 2400 bps
Data Length 8 bits
Stop Bit 1 bit
Parity None
2.4.1.2 The Pin Assignments of true RS232 type
The Pin Assignments of true RS232 type are illustrated as follows:
1
2
3
4
5
6
7
8
9
Pin 3: RS232 Rx
Pin 2: RS232 Tx
Pin 5: Ground

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3. Installation and Operation
The packing condition and the external outlook of the unit should be
inspected carefully before installation. Retain the packing material for future use.
3.1. Unpacking
3.1.1. Take out the UPS Module, Battery Module or Isolation Transformer
with/without Maintenance Bypass Switch from the PE foam.
3.1.2. Unwrap the UPS Module, Battery Module or Isolation Transformer with/
Without Maintenance Bypass Switch. .
3.1.3. Standard Package of the UPS Module includes:
¾1 set of Quick Start Manual
¾1 set of User's Manual
¾1 set of UPS communication software with RS232 cable
¾1 set of accessories pack
3.1.4. Package for the Isolation Transformer with Maintenance Bypass Switch:
¾1 set of 12 inches long NEMA L5-30P and a 12 inches long NEMA
L5-30R
3.1.5. Package for the Isolation Transformer without Maintenance Bypass
Switch:
¾3pcs additional No. 10 AWG, 60°C copper wire
(p.s. 2pcs 12 inches long NEMA L5-30P and 1pcs 12 inches long NEMA L5-
30R are to be used at the input/output terminal block of the UPS. Please
refer to Chapter 0 for installation.)
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3.2. Selecting Installation Position
It is necessary to select a proper environment to install the unit, in order to
minimize the possibility of damage to the UPS and extend the life of the UPS.
Please follow the advice below:
1. Keep at least 30cm (12 inches) clearance from the rear panel of the UPS to
the wall.
2. Do not block the air-flow to the ventilation openings of the unit.
3. Please check the installation site to avoid overheat and excessive moisture.
4. Do not place the UPS in an environment near dust, corruptive or salty
material or flammable objects.
5. Do not expose the UPS to outdoors.
AIR
AIR
C
00C
400
Relative Humidly
(non condensation) 30%~90%

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3.3. Installation
3.3.1 Tower installation
3.3.1.1 Power Module + Battery Module
Step1: Installation of the Foot Covers of the Power Module
Step2: Installation of the Power Module and the Battery Module
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3.3.1.2 Power Module+ Isolation Transformer Module+ Battery Module
Step1: Installation of the Power Module, Isolation Transformer Module and Battery
Module

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3.3.2 Rack installation
3.3.2.1 Power Module+ Battery Module
Step1: Installation of the Ear Covers
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Step2: Installation of the Ear Covers to Power Module, Isolation Transformer Module
and Battery Module
Step3: Installation of the Rail kit to Rack Cabinet

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Step5: Installation of the Power Module to the Rack Cabinet
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3.3.2.2 Power Module+ Isolation Transformer Module+ Battery Module
Step1: Installation of the Isolation Transformer Module to the Rail
Step2 : Installation of the Power Module to the Rack Cabinet

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3.4 Terminal Block Explanation
● L12-N1: the terminal for Utility Input to provide the power source when the
UPS is working under Utility mode.
● G1: the terminal for UPS Input Ground.
● L21、N22: the terminals for UPS Output.
● G2: the terminal for UPS Output Ground.
Remarks:
1. When the Isolation transformer and Maintenance Bypass Switch are not
installed:
a. For 200/220/230/240Vac system, you may connect as shown in below.
(1a1)
(1a2) 21
2. When the Maintenance Bypass Switch is installed:
(2a1)
(2a2)
3. When the Isolation transformer and Maintenance Bypass Switch are
installed:
a. For 200/220/230/240Vac system, you may connect as shown in below.

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(3a1)
(3a2)
b. For 100/110/115/120Vac system, you may connect as shown in below.
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(b)
c. For 200/100Vac, 220/110Vac, 230V/115Vac, or 240/120Vac system,
You may connect as shown in below.
(c)
d. For 240/208/120Vac system, you may connect as shown in below.

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(d)
4. When the Isolation transformer is installed but Maintenance Bypass Switch
isn’t installed:
a. For 200/220/230/240Vac system, you may connect as shown in below.
(4a1)
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(4a2)
b. For 100/110/115/120Vac system, you may connect as shown in below.
(b)
c. For 200/100Vac, 220/110Vac, 230V/115Vac, or 240/120Vac system,
You may connect as shown in below.

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(c)
d. For 240/208/120Vac system, you may connect as shown in below.
(d)
● To fix the cables, you are recommended to use cable ties.
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3.5. Operation Test and Installation Instruction
3.5.1. Start Up in Normal Mode
3.5.1.1 Open the terminal block cover on the rear panel (refer to 2.3.2) Before
start the installation, please make sure the grounding is connected properly.
3.5.1.2 Make sure Utility breaker, UPS’ Utility breaker is On “Off” position.
3.5.1.3 Make sure the voltage of Utility matches with the input voltage window of
the UPS.
3.5.1.4 Connect the Utility separately to the terminal blocks of UPS’ Utility and
Bypass Inputs. Switch on the Power Breaker of the distribution panel and the
breaker of the UPS’ Utility Inputs, and then the UPS starts up. Green LEDs &
light up to show the Utility and Bypass Inputs are normal and the LCD display
will illustrate from drawing A to drawing B.
A.
B.
3.5.1.5 Then, the UPS is on Bypass Mode now and it will proceed self-test
automatically. If there is no abnormal message occurred, it means the pre-startup
of the UPS is successful and the charger starts to charge the batteries.
3.5.1.6 Press the UPS On Switch for approx. 3 seconds, then the Buzzer
sounds twice and the LCD display changes from drawing B to drawing C.
C
3.5.1.7 Then, the UPS is under self-test mode again, the LCD display will illustrate
from drawing C to drawing D and remain approx. 4 seconds under battery mode,
then illustrate from drawing E1 to drawing F if the self-test is successful.

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D
* It shows “test”.
E1
* It shows “OK” in self-test
E2
* It shows “Fail” in self-test
F
* It shows “220Vac” in Utility Input.
3.5.1.8 In case of failure in self-test, the LCD display will illustrate from Drawing D
to drawing E2, then an error code or error status will be shown on the screen.
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3.5.1.9 Your start-up operation of the UPS is completely now. Make sure the
UPS is plugged onto the wall receptacle for charging at least 8 hours and the
batteries of the UPS are fully charged.
3.5.2 Start-up in Battery Mode (Cold Start)
3.5.2.1 Make sure the UPS you have has already been installed at least 1
set(20pcs) of 12V/7AH or 12V/5AH batteries.
3.5.2.2 Push the UPS On Switch to awake the UPS for approx. 3 seconds,
and then the buzzer sounds twice. The LCD display will illustrate from drawing A
to drawing G, and keep awake for approx. 10 seconds.
3.5.2.3 Press the UPS On Switch of the UPS again for about 3 seconds till
the LCD display illustrates from drawing G to drawing H, then the UPS will be in
self-test Mode. The UPS may offer energy to the output in a minute, and the LCD
display illustrates as drawing I. In case of failure in pushing the UPS On Switch in
10 seconds, the UPS will automatically turn off. You then have to go through step
0 to 0 once again.
G
* It shows “Off”, which means the UPS pre-start is successful.
H
* It shows Utility input is “0” and Utility Abnormal.
I

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3.5.3 Check Measured Values & Figures detected by UPS
3.5.3.1 If you would like to check the measured values & figures detected by the
UPS, please use scroll up and scroll down key pads. When you use
scroll down key pad, the LCD display will illustrate as Drawing C(Voltage from
Utility Input) ÆDrawing I1(Voltage from Bypass Input) ÆDrawing J(Frequency
from Utility Input) ÆDrawing K(Frequency from Bypass Input) ÆDrawing L(UPS
Output Voltage) ÆDrawing M(UPS Output Frequency) ÆDrawing N(UPS Output
Load %)ÆDrawing O(UPS Battery Voltage) ÆDrawing P(UPS Inner
Temperature).
I1
* It shows voltage comes from Bypass Input
J
* It shows frequency from Utility Input.
K
* It shows frequency from Bypass Input.
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L
* It shows UPS output Voltage.
M
* It shows UPS output frequency.
N
* It shows UPS output load level(%)
O
* It shows Battery Voltage.
P
* It shows UPS Inner Temperature

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3.5.4 UPS Default Data and Special Function Execution
3.5.4.1 After UPS completely starts up, press key pad to change the LCD
display screen to drawing Q1.
Q1
* It shows buzzer “On”.
Q2
* It shows buzzer “Off”.
3.5.4.2 Press key pad to scroll down the screen and check the UPS
settings.The LCD display will show in consequence between Drawing Q1(buzzer)
ÆDrawing R1(Self-test) ÆDrawing S1(Bypass Voltage Windows) ÆDrawing
T(Output Frequency Synchronization Window) ÆDrawing U(Inverter Output
Voltage) ÆDrawing V1(UPS Operation Mode) ÆDrawing W(Output Voltage Micro
Tune Value) ÆDrawing X(UPS Id) ÆDrawing Y(No. of UPS in Parallel).
R1
* It shows self-test is NOT “on”.
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R2
* It shows self-test is “On”.
S1
* It shows Bypass Voltage is adjusted to narrow one.
S2
* It shows bypass voltage is adjusted to wider one.
T
* It shows Frequency Window is +/-3Hz.
U
* It shows inverter output voltage.

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V1
* It shows the UPS is operated in “normal mode”.
V2
* It shows the UPS is operated in “Eco mode”.
V3
* It shows the UPS is operated in “CVCF 50Hz mode”.
P.S: If you want to set be a frequency converter, it shall be required by a qualified technician.
V4
* It shows the UPS is operated in “CVCF 60Hz mode”.
P.S: If you want to set be a frequency converter, it shall be required by a qualified technician.
W
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* It shows Output Voltage Adjustment % from 0% to 3% or -0% to -3%.
X
* It shows UPS Identification Number.
Y
* It shows the UPS is in the No. 1st of parallel systems.
3.5.4.3 Press scroll up key pad, you may execute special functions. The
Functions includes buzzer ON (as drawing Q1), or buzzer OFF (as drawing Q2,
Alarm silence for UPS Warning) and self-test OFF (As drawing R1) or self-test ON.
(as drawing R2. UPS will execute battery test for 10 seconds. If the self-test is
successful, it will show as Drawing E1; otherwise, it will show as drawing E2 &
error message in the same time.)
3.5.5 UPS Default Settings and their alternatives
3.5.5.1 Make sure the UPS is not “On” yet. Press On Switch and scroll
down key pads simultaneously for approx. 3 seconds, the buzzer will sound
twice, the LCD display screen shows as drawing Q1, then the UPS is under
setting mode now.
3.5.5.2 To scroll down the LCD screen, you may refer to Chapter 0

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3.5.5.3 Except Buzzer(as drawing Q1 & Q2) and Self-test(as drawings R1 & R2),
all the rest default settings may be changed by pressing scroll up key pad.
3.5.5.4 Drawings S1 and S2 mean the bypass input acceptable window, it can be
184Vac~260Vac or 195Vac~260Vac.
3.5.5.5 Drawing T means the bypass frequency window of the Inverter Output, the
acceptable setting values are ±3Hz and ±1Hz.
3.5.5.6 Drawing U means the acceptable Inverter Output Voltage, of which
voltage is 200Vac, 208Vac, 220Vac, 230Vac, or 240Vac.
3.5.5.7 Drawing V1, V2, V3 and V4 mean the operation modes of the UPS, of
which alternative is Online, Eco(Economic) mode, fixed 50Hz Output or fixed
60Hz Output.
3.5.5.8 Drawing W means the adjustments of the Inverter Output, which may be
calibrated as 0%, +1%, -1%, +2%, -2%, +3%, or -3%.
3.5.5.9 Drawing X means a specified address & position of the UPS when the
UPS is in Parallel mode. The settable numbers are from 1st to 4th.
3.5.5.10 Drawing Y means the total numbers of the UPS in parallel. The settable
numbers are from 1 to 4.
3.5.5.11 When all the setting changes are done, you have to press enter key
Pad to save all the changes when the LCD screen shows as drawing Z, then, the
LCD screen will show as drawing AA to complete the setting changes. If you don’t
want to change those settings, you may press “OFF” key pads for 5 seconds,
then the LCD screen turns to Drawing AA directly, which means your setting
changes are invalid.
Z
* Please press Enter key to save data.
AA
* It shows the UPS is locked.
3.5.5.12 Turn Off the breaker of Utility Input.
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3.5.5.13 Your Setting changes are complete.
3.5.6 UPS Is Off Due to Unknown Reason and Its Trouble Shooting
3.5.6.1 If there is a serious abnormal condition occurred, the UPS will lock it itself
in “OFF” position as shown in drawing AA and a abnormal message will show in
the LCD screen.
3.5.6.2 To release the UPS lock, please check those error messages shown in
Chapter 2.2 to trouble shoot the problem of the UPS. Otherwise, consult your
local distributor for service. Press Off key pad for 5 seconds and buzzer will
sound twice. Turn Off the Breaker of Utility Input. The UPS lock problem is solved
now, but you shall contact with your Local distributor to make sure the error
message shown is solved.
3.5.7 Shut Off
3.5.7.1 Press Off key pad for about 5 seconds, the Inverter output will be
turned off, then the output load is supplied by Bypass loop and the LCD screen
shows as drawing B.
3.5.7.2 Turn Off the breaker of Utility Input.
3.5.7.3 The UPS is turned off completely.
3.5.8 Maintenance Bypass Mode
3.5.8.1 It is for UPS maintenance only. A Non-authorized technician is not allowed
to operate the following procedures. If there is any damage under unauthorized
condition, your warranty will be void immediately.
3.5.8.1.1 Press the Off key pad for approx. 5 seconds, the LCD screen
shows as drawing B and the UPS output is on bypass mode.
3.5.8.1.2 Release the cover of the CAM Switch (Maintenance Bypass Switch) first,
then turn on the CAM Switch to “Bypass” mode, and at the right-hand upper
Corner of the LCD screen will show sign.
3.5.8.1.3 Turn off the UPS Utility breaker, you then may proceed UPS
maintenance now.
3.5.8.1.4 To repeat 0, you may put the UPS back to normal working mode, then
turn back the CAM switch to “INV” mode, fasten back the cover and repeat 0 to 0
The UPS will switch back to inverter mode.
3.5.8.1.5 It is required to go through 0 first, then go through 0 If you skip 0, the
UPS will alert for 10 seconds to warn that the procedure is abnormal, which may
damage the UPS due to uncertain utility status. The UPS will switch back to
Inverter mode immediately if you turn the CAM switch back to “INV”.

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4. Troubleshooting Guide
4.1. Trouble Shooting
When the UPS malfunctions during operation, you may check the followings:
a. Are the wirings of input and output correct?
b. If the input voltage of the Utility is within the input window of the UPS?
In case problems or symptoms still exist, please proceed the followings for
proper adjustment. Should the problem persists, please contact your local
distributor for help.
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Situation Check Items Solution
UPS Red Fault LED
lights up Check the error code shown on the LCD
screen
1.Er05, &
2.Er06, Er10, Er12,
Er28 &
3.EPO
4.Er11
5.Er15
6.Er24
7.other error code
1.Check to see if the battery
connection is properly done,
then re-charge the batteries for
8 hours to see whether the
UPS may backup normally;
otherwise, consult your local
distributor right away.
2. Remove some uncritical load
at the UPS output end. If any
damage of the coating of AC
power cord, please replace a
new one.
3. Remove the short circuit
occurred at the EPO terminal.
4. Remove the objects blocked
onto the ventilation holes.
5. Make sure the UPS is
operated normally. If it is on
CVCF mode, you have to turn
off and turn on the UPS again.
6. When the UPS is on CVCF
mode, it is prohibited to have
bypass input. You have to
turn off the UPS and bypass
input and re-start the UPS.
7. Consult your local distributor
for help.
UPS fails to offer
battery backup or its
back up time is shorter
than its calculation.
If the backup time is still too
short after 8 hours of charge,
please contact your local
distributor for battery
replacement.
UPS locks itself and it
can not be turned off. Please refer to chapter 0 to trouble shoot the problem;
otherwise, consult your local
distributor for help.