PowerWalker DC UPS User manual

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DC UPS
User Manual

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Table of Contents
1. Introduction…………………………………………………………3-4
1.1 General Introduction ……………………………………….………3
1.2 Panel Introduction …………………………………………….……3
1.3 The 7 Pin Terminal Connecters Introduction Table …………….4
2. Safety Information……………………………………………………5
3. Package Contents……………………………………………………6
4. Installation …………………………………………………………7-9
4.1 Wire Connection …………………………………………………7-8
4.2 Wall-Mounting Instructions (Optional) ……………………………9
5. Operation…………………………………………………….………10
6. Available & Visual Alarms ………………………………….………11
7. Battery Replacement Procedure …………………………….……12
8. Specifications …………………………………………………..……13

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1. Introduction
1.1 General Introduction
DC UPS is the innovative power protection solution for delicate network devices
and telecom equipments. It equips with 12V/30Watts power capacity and internal
long 7 amp-hour backup battery. With universal input voltage design, this UPS
can be widely applied to the majority power system without AC input voltage
transfer. The advantages of DC output are saving the cost and space of the
additional power adapter connection. This feature further prevents the power loss
while transferring between DC to AC. The thoughtful wall-mount design allows
you to install DC UPS to diverse environments for maximizing your precious
space. DC UPS can be applied to any other device equipped with a compatible
DC input connector.
Features
Universal input range (80-260VAC) for global applications
12VDC (30W max.) output meets the major standard of network devices
Integrated hot-swappable to easy replacement battery allows battery
replacement without power interruption.
Microprocessor controlled for optimized operation and maximum reliability
Audible warning alarm with mute switch
Outputs for remote monitoring; On Battery, Replace Battery, Battery
missing and
Low battery alert
Wall mountable design for maximized flexibility
Multiple LED for AC power and battery status indications
Cold Start function capable
1.2 Panel Introduction
The front view
Power on/off
Use poweron/off switch to turn the
DC UPS on/off. The unit will not
supplypowerto the networkdevices
when power switch is in OFF (Not
push down)position.
Status Indicators
There are three LED status lights: red,
yellowand green which are from left to
right. The status lightsindicatespecific
conditionsof the DC UPS. (See page X.)
Mute on/off
Use thisswitch to turn the mutefunction
on/off.Theaudiblealarmswillbesilenced
whenmuteswitch isinON (Push down)
position.

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The rear view
1.3 The 7 Pin Terminal Connecters Introduction Table
Terminal
Connectors
Function
Suggested
Wire Gauge
VO+
Positive(+) Voltage output
At least #18AWG
VO-
Negative(-) Voltage output
At least #18AWG
SIG RTN
Signal return
At least #26AWG
ON BATT
Low when operation from utility
line.
Open when operating from
battery.
At least #26AWG
REPLACE BATT
Low when battery is charged.
Open when battery fails the self-
test.
At least #26AWG
BATT MISSING
Low when battery is present.
Open when battery is missing.
At least #26AWG
LOW BATT
Low when battery is near full
charge capacity.
Open when operating from
a battery with < 20% capacity.
At least #26AWG
AC input socket
TheAC input socket is
IEC320 C14.
DC output socket
TheDC outputincludes12VDCpower,
four dry contactsignalsand common
return pointfor these signals. Please
findthedefinensandwire connections
for DC output socket asbelow table.

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2. Safety Information
Internal battery voltage is 12V DC.
Incorrect battery connection or replacement creates risk of explosion.
Use only vender approved replacement batteries.
The DC UPS is intended for installation and operation in a controlled
environment (temperature controlled, indoor area free of conductive
contaminants). Refer to specifications in this manual.
No user-serviceable parts exist inside the unit. Refer repair issues only to
qualified personnel. Fuses or other parts must be replaced ONLY with
parts of identical types and ratings. Substitution of non-identical parts can
cause fire and other safety hazards.
All batteries used are sealed lead batteries. Batteries should be recycled.
The battery charges when it is connected to theAC power. The battery
will fully charge during the first eight hours of normal operation. Do not
expect full battery run capability during this initial charge period.
Connect the DC UPS to utility power for completely charging the internal
battery before starting the UPS.

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3. Package Contents
The DC UPS package includes the following items. Please inspect if there are
any missing parts.
1 x DC UPS Unit with 12V internal battery preinstalled
1 x User Manual
1 x 7-position connector

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4. Installation
4.1 Wire Connection
1. Remove the wire connection cover in the rear of the DC UPS. Keep the
cover will and reinstall the cover after all the wires are well-connected.
2. Plug IEC-LOCAL power cord into theAC input socket on the back of DC
UPS. Do not connect the AC power cord to utility outlet prior to this
process.
3. Connect DC UPS to network device.
3.1 If the telemetry cable is enclosed:
(1) Plug the telemetry cable into the 7-position connector
(2) Then place the cable between the two sticks for fixing the cable as
the following picture

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3.2 If the telemetry cable is not enclosed:
(1) Cut and strip the self-prepared cable leads, and then attach the
leads to the 7-position connector. Make sure that the correct
wire gauges are used for the safety (Please refer to “1.3 The 7
Pin Terminal Connecter Intro Table”)
(2) Plug the 7-conductor cable into the outlet of the DC UPS
(3)Then place the cable between the two sticks for fixing the cable
as the following picture
4. Close the wire connection cover
5. Connect the other end of the cable to the equipment

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4.2 Wall-Mounting Instructions (Optional)
NOTE: Required hardware not included. Refer to the wall-mount instructions
for required tools and materials.
STEP 1: Make a mark on the wall in the 2 screw locations. The distance
between the centers of the 2 screws are 80cm.
STEP 2: Use a drill to drill holes where you made the mark on the wall. If you
drill into a wall stud, proceed to Step 5. If not, go to Step 4.
STEP 3: Insert anchor(s) into the hole(s).
STEP 4: Screw in the screw, leaving it protruding 1⁄4 inch from the wall.
STEP 5: Mount the DC UPS on the screw heads. Mounting holes

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5. Operation
After the installation, you can start to operate the DC UPS and let your device
running under uninterruptible power supply environment as the following
procedure.
STEP 1: Plug theAC input power cord of the DC UPS into the wall outlet (The
utility power outlet)
STEP 2: Push the power on/off switch and you may hear a long beep buzzer
alarm for knowing the unit is properly turned on. You may turn the audible
alarm off by pushing the mute switch button to ON (Push down) position.
Self-test
Use the self-test to verify both the operation of the DC UPS and the condition
of the battery. Turn the mute switch ON then OFF, then ON and OFF again
within five seconds. During the Self-test, the DC UPS operates in backup
mode.
The DC UPS automatically conducts a Self-test in two conditions. 1) Operate
it and then the MCU detects battery voltage is higher than 13V. 2) Every 21
days while operating all the time.
Note: During the self-test, the DC UPS briefly operates on battery-backup
power. The green LED will flash for five minutes during the test period. If the
DC UPS passes the Self-test, it returns to online operation. If the DC UPS
fails the Self-test, it immediately returns to online operation and lights the red
LED. The loads are not affected. Recharge the battery overnight and perform
the self-test again. If the red LED is still on, the battery needs to be replaced.

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6. Available & Visual Alarms
Front-Panel
Label
Visual Indicator
Audible
Alarm
Description
ON A/C
Green LED lights
None
The DC UPS is operating
on A/C
Testing
Battery
Green LED
flashes
None
The DC UPS is conducting
a self-test. This automatic
procedure is normal and will
occur when the unit is
switched on, and
periodically thereafter. This
procedure will last
approximately 5 minutes.
ON Battery
Yellow LED lights
Tone every
5 seconds
The DC UPS is operating
on battery power. The alarm
will stop when main power
is returned.
Low Battery
Yellow LED
flashes
one every
1 seconds
The battery energy is
running low. This alarm will
continue until the unit
performs a forced shutdown
when the battery is
depleted.
Replace
Battery
Red LED flashes
one every
2 seconds
This alarm warns that the
battery has reached the end
of its useful life. The user
must replace the battery as
soon as possible to ensure
proper operation of the DC
UPS.
Fault
Red LED lights
Continuous
tone
A fault has occurred.
Disconnect equipment from
the DC UPS prior to
checking equipment.
NOTE:Audible alarm will not sound when mute switch I in ON position.

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7. Battery Replacement Procedure
The DC UPS is designed with an easy-access battery cover.
STEP 1 Turn off power switch. Disconnect the DC UPS from power and any
connected devices. Remove the battery door on the front of the DC UPS by
pulling up the battery door.
STEP 2 Remove the battery from enclosure; remove the wire connections
from the battery.
STEP 3 Connect the new battery (black-to-black, red-to-red); place the battery
into the enclosure, and then put the wires next by the battery inside of the
closure as shown bellow.
WARNING: Connect the correct color wires carefully to the corresponding
terminals. The battery has two color-coded terminals (red = +, black = -) as
well as the two colors of the wires. Misconnect the two wires to wrong
terminals might cause battery explosion.

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8. Specifications
Model Name
DC UPS
INPUT
Nominal input voltage
230Vac
Acceptable Input Voltage Range
80~260Vac
Acceptable Input frequency Range
45Hz~65Hz
OUTPUT
Output power (max)
30W
Normal Voltage
12Vdc
Output Voltage Range
10.5V~13.8V
Line Mode Efficiency
> 80%
BATTERY
Type/Rating
12V/7Ah x 1pc
Discharge Prevention
10.5V ± 0.5V
Backup Time
(With 1A Discharging)
Typical 340mins
Rated Charging Voltage
13.7V ± 0.25V
Recharge Time (internal battery)
4 hours to 90% without load
after complete discharge
Charge Current
2.5A Maximum
Hot Swappable Battery
Yes
INDICATOR
AC mode
Green LED Lighting
Backup mode
Yellow LED Lighting
Battery low
Yellow LED Flashing
Battery replace
Red LED Flashing
Battery missing
Red LED Lighting
Fault
Red LED Lighting
Battery self-test
Green LED flashing
AUDIBLE ALARM
Backup mode
Sounding every 5 seconds
Battery low
Sounding every 1 second
Battery replace
Sounding every 2 seconds
Battery missing
Continuous sounding
Fault
Continuous sounding

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MUTE FUNCTION
Switch on
Buzzer disable
Switch off
Buzzer enable
OPERATING
ENVIRONMENT
Operating temperature
0℃to 40℃
Operating humidity
0% to 90%
Operating Elevation
0 to 3000m
PHYSICAL
Weight
3.5 kgs
Dimension (W x H x D)
120mm(W) x 358mm(H) x
86.5mm(D)
INPUT TYPE
IEC inlet
OUTPUT TYPE
7pin terminal
(2 pins for DC output, 5 pins for dry contact signal output)