Epcom RT Series User manual

Epcom Power Line
MT | RT Series True Online UPS RT Series True Online UPS | 1
RT Series
User Manual
TRUE ONLINE UPS
1KVA-3KVA

2 | RT Series True Online UPS
UPS has high voltage inside, do not repair it by yourself. If any questions,
please contact local service center or dealer.
1. Safety Information
• Read all safety information and operating
instructions carefully before attempting to install,
service or maintain the UPS. Save this manual
properly for reuse.
• This UPS is intended for indoor use only.
• Do not operate this UPS in direct sunlight, in
contact with uids, or where there is excessive
dust or humidity.
• Environmental factors impact battery life.
Elevated ambient temperatures, poor quality
utility, power, and frequent short duration
discharges will shorten battery life. Replacing
battery periodically can help to keep UPS in
normal state and assure backup time required.
• Battery installing or replacing should be
performed by a qualied electrician. If you want
to replace the battery cable, please purchase it
from our local service center or distributors to
avoid fever and lighter which can cause re by
inadequate power capacity.
• Batteries may cause electric shocks and have
a high short circuit current, follow below
requirements before installing or replacing the
batteries.
1.1 UPS Safety Information
Note: Symbol Instructions
1.2 Battery Safety Information
CAUTION
A. Remove wristwatches, rings, jewelry
and other conductive materials.
B. Only use tools with insulated grips and
handles
C. Wear insulated shoes and gloves
D. Do not put the metal tools or parts on
the batteries
E. Before disconnecting the terminals
from the batteries, cut off all the loads to
the batteries rst.
• Do not dispose of the batteries with re. The
batteries may explode.
• Do not open or mutilate batteries. Released
electrolyte inside is harmful to the skin and eyes,
and maybe toxic.
• Do not open the UPS case as you will, there is a
high risk of electric shocks inside. All connection/
wiring/servicing must be performed by a qualied
electrician.
• Do not connect to the equipment like hair dryer or
electric heater.
• Do not use liquid extinguisher if there is a re, a
dry powder extinguisher is recommended.
Caution
Protective
earth
Danger! High
Voltage!
Disable/mute
audible alarm
Turn on
Overload
Turn off
Battery
inspection
Standby or
Shutdown
Repeat
AC
Display screen
repeat key
DC
Battery

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2. Product Overview
2.1 Specications
Model 1KVAS-RT 1KVAH-RT 2KVAS-RT 2KVAH-RT 3KVAS-RT 3KVAH-RT
Rated Capacity 1KVA / 900W 2KVA / 1800W 3KVA / 2700W
Input
Rated input voltage 208Vac / 220Vac / 230Vac / 240Vac
Rated input frequency 50Hz / 60Hz (auto-sense)
Input voltage range 110 ~ 176Vac (power derating linearly between 50% and 100% load);
176 ~ 280Vac (no derating); 280 ~ 300Vac (power derating 50%)
Input frequency range 40 ~ 70Hz
PFC ≥ 0.99
THDI ≤ 6%
Bypass voltage range -25% ~ +15% (settable)
Output
Output voltage 208Vac / 220Vac / 230Vac / 240Vac (settable)
Voltage accuracy ± 1%
Output PF 0.9
Inverter overload
capability
105% ~ 125% load: transfer to bypass in 1 min;
125% ~ 150% load: transfer to bypass in 30s;
> 150% load: transfer to bypass in 300 ms;
Load crest 3:1
From mains mode
to BAT mode 0 ms (transfer time)
From mains mode
to bypass 4 ms (typical)
Efciency
Line mode 90% 91% 92%
BAT mode 85% 86% 87%
ECO mode 95% 96% 97%

4 | RT Series True Online UPS
* Derate capacity to 70% in CUCF mode and to 90% when the output voltage is adjusted to 208Vac.
Output
frequency
Line
mode Same as input frequency
BAT
mode (50 / 60 ± 0.1) Hz
Total voltage
harmonic distortion ≤ 2% (linear load); ≤ 5% (non-linear load)
Batteries
Battery type Sealed lead acid maintenance free battery
DC voltage 24V 36V 36V 48V 72V 72V 72V 96V 96V
Inbuilt battery 9 Ah /
12V
7Ah /
12V /9 Ah / 12V
7 Ah /
12V /9 Ah / 12V
7 Ah /
12V /
Quantity 2 3 3 4 6 6 6 8 8
Charger output
voltage
27.1
±0.4
40.7
±0.6
40.7
±0.6
54.2
±0.8
81.3
±1.2
81.3
±1.2
81.3
±1.2
108.4
±1.6
108.4
±1.6
Recharging time Recover 90% capacity in 3 hours for standard models
Charging current
(Max.)
Standard model:1 (A ±0.15)
Long time model: 6 A / 3 A (±0.5)
System Control and Communications
Protections Over-temp protection; Fan testing protection; Overload protection;
Output short circuit protection; Battery discharge protection
Communication port Standard: RS232; Options: USB, SNMP card, dry contacts
Display LCD
Environmental
Operating humidity 0 ~ 90 % RH @ 0 ~ 40°C (non-condensing)
Storage temperature -25°C ~ 55°C (exclude batteries)
Operating altitude ≤ 1000m, above 1000m, derate 1% for each rising 100m
Protection class IP20
Noise level ≤ 50dB (at 1m)
Others
Dimensions (mm)
W ×D×H
440*44
0*88
440*44
0*88
440*44
0*88
440*63
0*88
440*63
0*88
440*44
0*8
440*63
0*88
440*44
0*88
440*4
40*88
Weight (kg) 12.26 13.78 7.58 22.73 25.86 9.66 29.26 9.45 10.04

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a. 1KVAS-RT(24V), 1KVAS-RT(36V) and 1KVAH-RT rear panel.
b. 2KVAS-RT (48V), 2KVAS-RT (72V) and 3KVAS-RT(72V) rear panel.
c. 2KVAH-RT, 3KVAH-RT and 3KVAS-RT(96V) rear panel.
The gure is for reference only.
Due to the technology upgrading
and development, the real unit
might be different from the gure.
Model Type Model Type
1KVAS-RT 1KVA Standard model 1KVAH-RT 1KVA Long backup model
2KVAS-RT 2KVA Standard model 1KVAH-RT 2KVA Long backup model
3KVAS-RT 3KVA Standard model 1KVAH-RT 3KVA Long backup model
①AC input socket
②Overcurrent
protector
③Fan
④USB port
⑤EPO (Emergency
Power Off) port
⑥RS232 port
⑦Intelligent slot
⑧
Surge protection
for network/fax/
modem
⑨Output sockets
①Battery connector
Note:
Note:
2.2 Front Panel Features
2.3 Rear Panel Features
10
②
② ⑧ ③ ⑨ ④ ⑤
⑦⑥
② ⑧ ⑨ ③ ⑦ ④
⑥⑤①
①
① ⑨ ③ ⑤ ④ ⑥ ⑦
⑧
①
10
①
10
①
10

6 | RT Series True Online UPS
3. Installation
• Open the UPS package and inspect the contents upon receipt. The accessories attached to the UPS contain
a power cord, a user manual, communication cable, CD-ROM. The long backup model also includes the
cable for connection to battery bank.
• Check if the unit is damaged during transport. Do not power on and notify the carrier and dealer if nd
damaged or parts missing.
• Verify this unit is the model you want to buy. Check the model name showed both on the front panel and
rear panel.
• The UPS installation environment must be in good ventilation, away from water, ammable gases and
corrosive entities.
• Do not lie down the UPS against the wall so that front and side panel air intake hole, rear panel air outtake
hole will be unobstructed.
• The ambient temperature around the UPS should be within 0 ~ 40°C (non-condensing).
• If dismantling the machine at low temperatures, there may be condensation droplets, users can not install
or operate it before UPS completely got dry both inside and outside, otherwise there will be danger of
electric shocks.
• Place the UPS near the mains source so that can cut off utility power without any delay in case of
emergency.
• Make sure the load connected to the UPS is off when users connect it to UPS, and then turn on the load one
by one later.
• Connect the UPS with the power outlet which is over-current protected. Do not connect the UPS with
power outlets whose rated current is less than the maximum input current of this UPS.
• All power outlets should be congured with earthing device for safety.
• UPS could be electried or powered no matter the input power cord is tied or not, even when the UPS is off.
The only way to cut off the output is switching off the UPS and disconnecting the mains power supply.
• For all standard model UPS, it is advised to charge the batteries over 8 hours before using. Once the AC
mains power energizes the UPS, it will automatically charge the batteries. Without prior charging, UPS
output remains as usual but with shorter back-up time than normal.
• When connected to motor, display equipment, laser printer etc, UPS power selection should be based on
the startup power of the load which is usually twice as rated power.
• Wiring by a qualied electrician is required. Ensure input cables and output cables are connected correctly
and rmly.
• If install a leakage current protective switch, please install it on output cable.
• For 1-3K series long backup model units, you may need to prepare wires for terminals based on the
following table.
3.1 Unpacking Inspection
3.2 Installation Information
Keep the packaging box and packaging materials for future transport use.
The equipment is heavy. Always handle it with care.
Note:

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Normally, output connection of 1~3KVA series is congured with power outlets or terminal blocks, users can
plug the load cable into the UPS power outlets to energize the load. Make sure the mains cable and breakers
in the building are enough for the rated capacity of UPS to avoid the hazards of electric shock or re.
3.3 Installation and Output Connection
3.4 External Batteries Connection (Long backup model)
Model
Wiring spec (AWG)
Input Outpu Battery Non-isolated
Neutral Ground
1KVAH-RT 1 mm² 1 mm² 4 mm² 1 mm² 1 mm²
2KVAH-RT 1.5 mm² 1.5 mm² 4 mm² 1.5 mm² 1.5 mm²
3KVAH-RT 2.5 mm² 2.5 mm² 4mm² 2.5 mm² 2.5 mm²
Model Battery Quantity (unit) Battery Voltage (volt)
1KVAH-RT 3 36
2KVAH-RT 6 72
3KVAH-RT 8 96
• For different UPS model, users are instructed to congure different battery voltage as below table. More
or less units are forbidden, or else something abnormal or faulty will appear.
• One end of battery cable is for UPS terminals while the other end with triple cables is for battery terminals.
Correct installation procedure is highly vital or else probable electric shock will arise. Users are strictly
required to follow the below procedure.
• Connect batteries correctly and make sure the total battery voltage is available for UPS.
• Correctly connect the long battery cable to battery terminals rst, red wire is to positive plate while black
is to negative. If users connect the UPS rst, electric shock or other danger may not be avoided.
• Before connecting loads, users should supply mains power and energize the UPS.
• Connect long battery cable to UPS terminals with correct poles link (red is for ‘+’, black is for ‘-‘), UPS will
start charging automatically.
• Connect the battery pack to the battery connector.

8 | RT Series True Online UPS
4. Network Functions
4.1 Communication Port
4.2 EPO Port (Optional)
RS232 Port:
USB Port:
Users could monitor the UPS system through the communication port such as standard RS232 port and
USB port with computer. Connecting this UPS with computer by communication cable could achieve UPS
management easily.
EPO is the short for Emergency Power Off. EPO port is
on the rear panel of the UPS. It’s green. Users can cut
off the output of UPS immediately by operating EPO
port in case of emergency.
Normally, pin1 and pin2 are connected so that the
machine can be working normally. When some
emergencies happen, and when users have to cut off
the output, just need to disconnect the connection
between pin1 and pin2, or just pulling it out.
Pins 1 2 3 4 5 6 7 8 9
Indication empty send receive empty ground empty empty empty empty
Pins 1 2 3 4
Indication +5V date+ date- GND
RS232 interface is set as below:
Note:
• Bit rate: 1200bps
• Byte: 8bit
• Completion code: 1bit
• Bit pattern: None
1
2
34
21
Txd
Rxd
GND
1
2
3
4
5
6
7
8
9

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4.3 Intelligent Card (Optional)
SNMP Card (optional)
Dry Contacts Card (optional)
SNMP card on UPS is compatible with the most software, hardware and network operating system, it is a
network management of UPS, with this function, UPS can login on internet , which can supply information of
UPS status and input power, and even possible to control UPS via net management system.
Insert the dry contacts card into the intelligent
slot. It’s another type function of intelligent
monitoring.
There is an intelligent slot on the rear panel of the UPS, it’s for SNMP card and dry contacts. Users can insert
any type intelligent card from those three into it to monitor and manager the UPS. And users don’t have to turn
off the UPS when install the intelligent card. Follow below process:
Position Denition
PIN1 ON: UPS is malfunctioning
PIN2 ON: Alarm (system failure)
PIN3 Ground
PIN4 Remote shutdown
PIN5 Common
PIN6 ON: Bypass mode
PIN7 ON: Battery low
PIN8 ON: Inverter mode
OFF: Bypass mode
PIN9 ON: No AC power in
• First of all, remove the intelligent slot cover
• Then insert the intelligent card (SNMP card and dry contacts)
• Finally, screw the intelligent card back.
• Bit pattern: None
UPS Fail
Bypass
Battery Low
UPS On
Line Loss
Summary Alarm
GND
Remote Shutdown
Common
1
2
3
4
5
6
7
8
9

10 | RT Series True Online UPS
5. Operation
5.1 Button Operation
Button Function
“ON” key
Press the two keys for more than half a second to turn on the UPS.
“OFF” key
Press the two keys for more than half a second to turn off the UPS.
TEST/MUTE key Press the two keys for more than 1 second and less than 5 seconds in Line
mode or ECO mode or CUCF mode: UPS runs the self-test function.
Press the two keys for more than 1 second in battery
mode: UPS runs the mute function.
INQUIRING key
Not in setting mode:
Press or for more than half a second (less than 2 seconds):
display the items orderly.
Press for more than 2 seconds: Circularly and orderly display the items
every 2 seconds, when press the key for some time again, it will turn to
output status.
In setting mode:
Press or for more than half a second (less than 2 seconds):
Select the setting option.
FUNCTION SETTINGS key
Not in setting mode:
• Press the key for more than 2 seconds: Function settings interface.
In setting mode:
• Press the key for more than half a second (less than 2 seconds): go to
the function setting options.
• Press the key for more than 2 seconds: exit from this function settings
interface.
25% 50% 75% 100%
25% 50% 75% 100%
OUTPUT
VAC
Hz
LINE

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Button Function
ROTATE key
Press and hold and for more than 5 second: Change the direction
to display items.
Press and hold
keys for more
than 5 seconds.
25% 50% 75% 100%
25% 50% 75% 100%
OUTPUT
VAC
Hz
LINE
The direction has
been changed in
the picture.
5.2 Display Interface
Display Function
Icon Display
Load Icon The approximate load capacity percentage (0-25%, 26-50%, 51-75% and
76-100%) is indicated by the number of load bar sections illuminated.
When UPS is overloaded, the load icon will ash.
Mute Icon
Indicates the audible alarm is disabled/mute.
Press the mute key in the battery mode, the mute icon ash.
25% 50% 75% 100%
25% 50% 75% 100%
INPUT BATTERY OUTPUT LOAD TEMP
INPUT BATTERY OUTPUT LOAD TEMP
VAC
KV
VDC
Hz
KVA
C %
LINE
bat
eco
STDBY
fault
batt
bypass
25% 50% 75% 100%
25% 50% 75% 100%
VAC
VDC
Hz
KVA
C %
Icon display
Battery capacity
display area
Working mode
display area
Load capacity
display area
Digital display area
KW

12 | RT Series True Online UPS
Display Function
Icon Display
Fan Icon
Indicates fan working status. When the fan normally runs, the icon
displays rotation; if the fan is not connected or faulty, the icon will ash.
Fault Icon
Fault icon: Indicates UPS is in fault mode.
Battery Status Icon Battery status icon: Indicates the battery capacity of 0-25%, 26-50%,
51-75%, and 76-100%. When the capacity of battery get low or battery
disconnected, the battery status icon will ash.
UPS Status Information
Digital Display Area
• In non-setting mode, it displays UPS output information when UPS
normally runs; Fault code will be told in fault mode.
• In setting mode, users could adjust different output voltage, activate
ECO mode, activate CUCF mode, select an ID number and so on by
operating function setting keys and inquiring key.
Operation Mode
Working Mode
Display Area
Indicates the power capacity of UPS within 20 seconds after startingup.
Indicates UPS operation mode in 20 seconds, such as STDBY (standby
mode), BYPASS (Bypass mode), LINE (AC mode), BAT (Battery mode), BATT
(Battery Self Test mode), ECO (Economic mode), SHUTDN (Shutdown
mode), CUCF (Constant Voltage and Constant Frequency mode).

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5.3 UPS On/Off Operation
Operation Description
Icon Display
Turn On the UPS
> Turn on the UPS with mains power
• With mains power connected, UPS works in bypass mode, its output is
same as the input voltage within the input range. If there is no need of
output voltage when mains power connected, you can set up bPS to
‘OFF’.Default bPS is ON, it means there is bypass output when power
on.
• Press the ON key for more than half a second to start the UPS, then it
will start the inverter.
• Once started, the UPS will perform a self-test function. When the
self-test nishes, it will turn to online mode.
> Turn on the UPS by battery without mains power
• When main power is disconnected, press the ON key for more than
half a second to start UPS.
• The operation of UPS startup process is almost same as above
process with mains power. After the self-test nishes, UPS will work
in battery mode.
Turn Off the UPS
> Turn off the UPS in Line mode
• Press the OFF key for more than half a second to turn off the UPS.
• After UPS shutdown, there is no output. If output is needed, you can
set BPS ‘ON’ on LCD setting menu.
> Turn off the UPS in battery mode without mains power
• Press the OFF key for more than half a second to turn off the UPS.
When UPS shut down, it will do self-test rst, until there is no display
on the panel.
UPS
Self-Test/Mute Test
Operation
• When UPS is in LINE Mode, press the self-test/mute key for more than
1 second. UPS gets to self-test mode and tests its status. It will exit
automatically after nishing test.
• When UPS is in BAT Mode, press the self-test/mute key for more than
1 second, the buzzer stops beeping. If you press the self-test/mute
key for one more second, it will restart to beep again.

14 | RT Series True Online UPS
Operation Description
Icon Display
UPS Setting
• Enter Setup interface. Press and hold the function setting key
for more than 2 seconds, then come to Setup interface, press and hold
the inquiring key ( , ) for more than half a second (less than
2 seconds), select the function setting, choose the setup interface,
at the moment, the letters ash.
• Enter the setup interface. Press and hold the function setting key
for more than half a second (less than 2 seconds), then come to the
setup interface, at this time, the letters doesn’t ash any more, the
numerical value ash. Press and hold the inquiring key ( , ) for
more than half a second (less than 2 seconds), select the numerical
value in accordance with the function.
• Conrm the setup interface. After selecting numerical value, press
and hold the function setting for more than half a second (less
than 2 seconds). Now, the setting function is completed and the
numerical value illuminates without ashing.
• Exit from the setup interface. Press and hold function setting key
for more than half a second (less than 2 seconds), exit from the setup
interface and return to the main interface.
5.4 UPS Settings
LCD Display Settings
Output Voltage Setting
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
For 208/220/230/240 VAC models, you may
choose the following output voltage:
208: output voltage is 208Vac.
220: output voltage is 220Vac.
230: (default): output voltage is 230Vac.
240: output voltage is 240Vac.
For 100/110/115/120/127 VAC models, you may
choose the following output voltage:
100: output voltage is 100Vac.
110: output voltage is 110Vac.
115: output voltage is 115Vac
120 (default): output voltage is 120Vac.
127: output voltage is 127Vac.

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LCD Display Settings
Low Voltage of Battery Setting
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
The battery voltage selecting interface.
You may choose the following output voltage:
9.8: Low voltage of battery is 9.8Vdc.
9.9: Low voltage of battery is 9.9Vdc.
10: Low voltage of battery is 10Vdc.
10.2: Low voltage of battery is 10.2Vdc.
10.5: Low voltage of battery is 10.5Vdc.
dEF (default): EOD voltage automatically varies with
loads, including 21.5 hours dicharge protection.
Frequency Converter Enable/Disable
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
CF mode only can be set in STDBY mode.
You maychoose the following two options:
ON: converter mode enable
OFF (default): converter mode disable
Output Frequency Setting
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
If frequency converter mode is enabled, you may
choose the following output frequency:
50 (default): presents output frequency is 50Hz.
60: presents output frequency is 60Hz.

16 | RT Series True Online UPS
Mode Setting
Bypass Mode Setting
Enable or disable Bypass function. You may choose
the following two options:
ON: Bypass enable.
OFF (default): Bypass disable.
ECO Mode Setting
Enable or disable ECO function. You may choose the
following two options:
ON: ECO mode enable.
OFF (default): ECO mode disable.
EP Setting
This setting is mainly used for some special units.
Users are not advised to operate it. After starting EP
mode, output voltage display will have nine option
(240V, 230V, 220V, 208V, 100V, 110V, 115V, 120V,
127V) but the voltage output is still four option (240V,
230V, 220V, 208V). You can choose to shield the LCD
display capacity values whens starting up, you can
choose whether UPS go directly to the Line mode or
bypass mode when connect mains and automatically
start up.
AUO Setting
EP setting ON required.
AUO setting only can be set in Stdby mode or Bypass
mode. You may choose the following two options:
ON: UPS will start up automatically and works in Line
mode when connect mains.
OFF: UPS won’t start up automatically when connect
mains except EOD, it will work in standby or bypass
mode (Default).

Epcom Power Line
16 | RT Series True Online UPS RT Series True Online UPS | 17
5.5 Parameters Inquiring Operation
Press the inquiring key orfor more than half a second (less than 2 seconds) to inquire about items. The inquired
items include Input, Battery, Output, Load and Temperature. The displayed items on LCD screen are shown as
following:
LCD Display Description
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
Output: Display the output voltage and output frequency of the
UPS. As the following graphic shows, the output voltage is 220V,
the output frequency is 50Hz.
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
Load: Display the numerical value of the active power (WATT)
and apparent power (VA) of the load. For example, as the following
graphics shows, the WATT of the load is 800W, VA is 1.0KVA
(when disconnect loads, it is a normal phenomenon to show
a small numerical value of WATT and VA).
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
Temperature: Display the maximum temperature of
the components in the UPS. As the following graphics
shows, the maximum temperature is 40˚C.
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
Input: Display the voltage and frequency of the input. As the
following graphics shows, the input voltage is 220V, input
frequency is 50Hz.

18 | RT Series True Online UPS
LCD Display Description
24
.
0
100
25% 50% 75% 100%
25% 50% 75% 100%
VDC
%
LINE
220
s0
.
0
25% 50% 75% 100%
25% 50% 75% 100%
VAC
Hz
LINE
25% 50% 75% 100%
25% 50% 75% 100%
w
KVA
LINE
900
10
25% 50% 75% 100%
25% 50% 75% 100%
LINE
C
40
25% 50% 75%100%
25% 50% 75% 100%
VAC
Hz
LINE
220
500
25% 50% 75% 100%
25% 50% 75% 100%
V
STDBY
10
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
220
25% 50% 75% 100%
25%50% 75% 100%
V
STDBY
600
25% 50% 75% 100%
25% 50% 75% 100%
STDBY
Battery: Display the voltage and capacity of the battery.
As the following graphics shows, the battery voltage is 24V,
the capacity of battery is 100% (the capacity of battery is
approximately reckoned according to the battery voltage).
Operation Mode and LCD Display Description
Bypass Mode
Turn to bypass mode under the following three
conditions:
• Connect mains power and the bypass setup is ON.
• Turn off the UPS in line mode and the bypass setup is ON.
• Overload in line mode.
Note: When UPS is working in bypass mode, it has no back up
function.
Line Mode
Being in line mode are as following: When input mains
corresponding to the working conditions, UPS will work
in line mode, LCD displays ‘Line’ .
Stdby Mode UPS is powered off and no output supply power,
but still can charge batteries.
Battery Mode
Being in battery mode are as following: the buzzer
beeps once every 4 seconds.
When the mains power is low or unstable, UPS will turn
to battery mode at once, and LCD displays ‘batt’.
Ecco Mode
Being in ECO mode are as following: When the input
mains meet the input range of the ECO mode and the
ECO function is on, the UPS works in ECO mode. If
input mains exceed the range of ECO several times
within one minute but stays in inverter input range,
UPS will work in inverting mode automatically. LCD
displays ‘ECO’ .
5.6 Operation mode

Epcom Power Line
18 | RT Series True Online UPS RT Series True Online UPS | 19
Operation Mode and LCD Display Description
CUCF Mode
Frequency conversion mode is mainly to provide a
stable voltage and frequency (mainly in terms of
frequency). After starting this mode, its output will not
be affected by utility to meet input needs of some
precision equipment and make users’ load more stable
and secure. After opening CUCF mode setup, LCD
displays ‘CUCF’. Under the CUCF mode, when the
output frequency is set to 50HZ, the load capacity
decreased to 80% of the original volume; when the
output frequency is set to 60HZ, the load capacity
decreased to 70% of the original capacity. The output
frequency is xed with the setting values, it doesn’t
vary with utility change. And the UPS can not be set to
going bypass under this mode.
Fault Mode
When UPS has a failure, the buzzer beeps and the
UPS turns to fault mode. UPS cuts off the output and
LCD displays fault codes. At the moment, users can
press the mute key to make the buzzer stop beeping
temporarily to wait for maintenance. Users can also
press the OFF key to shut down the UPS when conrm
that there is no serious fault.
6. Fault Messages
Table 1: Fault Code Messages
Fault Code Fault Type Bypass Output Note
0, 1, 2, 3, 4 Bus high yes
5, 6, 7, 8, 9, Bus low yes
10, 11, 12, 13, 14 Bus unbalance yes
15, 16, 17, 18, 19 Bus soft start fail yes
20, 21, 22, 23, 24 Inverter soft start fail yes
25, 26, 27, 28, 29 Inverter high yes
30, 31, 32, 33, 34 Inverter low yes
35, 36, 37, 38, 39 Bus discharge fail yes
40, 41, 42, 43, 44 Over heat yes
45, 46, 47, 48, 49 OP(inverter) short yes
50, 51, 52, 53, 54 Overload yes
55, 56, 57, 58, 59 Line NTC break yes
60, 61, 62, 63, 64 Shutdown fault yes
65, 66, 67, 68, 69 AC input fuse open yes unused
70, 71, 72, 73, 74 Communication fault yes unused
75, 76, 77, 78, 79 Communication fault yes
80, 81, 82, 83, 84 Relay fault yes
85, 86, 87, 88, 89 AC input SCR fault yes unused
90, 91, 92, 93, 94 CAN fault yes

20 | RT Series True Online UPS
S/N Working Status LCD Display Messages Alarm Beep
1
Inverter Mode (Mains Power)
Mains power voltage Working mode displays line No beep
Mains power high/low voltage
protection, switch to battery mode Working mode displays bAT One beep / 4 sec
2
Battery Mode
Battery voltage - normal Working mode displays bAT One beep /
4 sec
Warning for abnormal voltage of
battery Working mode displays bAT, Batash One beep / sec
3
Bypass Mode
Mains power – normal
(under Bypass) Working mode displays byPASS One beep / 2 mins
Mains power – high voltage war-
ning (under Bypass) Working mode displays byPASS One beep / 4 sec
Mains power – low voltage warning
(under Bypass) Working mode displays byPASS One beep / 4 sec
4
Warning for Battery Disconnected
Bypass mode Working mode displays byPASS, bat display
is 0, and ash all the time
One beep /
4 sec
Inverter mode Working mode displays Line, bat display is
0,and ash all the time
One beep /
4 sec
Power on / Switch on
LCD illuminateswhen power on, and display
the capacity of the UPS, some time later
working mode displays Line or byPASS, bat
icon ash all the time
6 beeps
Table 2: Working Status Messages