Elk products ELK-P412(K) User Manual

ELK-P412

Power Supply

ELK-P412K

Includes Battery

4 Amp, 12 Volt DC Power Supply &

Battery Charger with Enclosure

APPLICATION

The ELK-P412 is a general purpose high current power supply and battery charger. It is ideal for alarm, access control,
and CCTV applications requiring up to 4 Amps. The ELK-P412K is packaged complete with enclosure, battery, and AC
power cord. It distributes 12 Volts D.C. power to three (3) sets of DC power terminals, each having a voltage present
indicator LED and automatic resetting overload protection. Built-In Low Battery Cut-off circuit protects the battery from
deep discharging if AC power is lost for an extended period of time.

FEATURES

Switching Power Supply, no transformer needed.

•

Regulated 12VDC Output, capable of delivering 4 Amps.

•

Automatic Resetting Overload Protection.

•

Three Individually PTC Fused (2.5A) DC Power Outputs.

•

Master AC and Battery ON / OFF Power Switch.

•

Visual AC and DC LED Power Indicators.

•

Built-In Battery Charging Circuit.

•

Includes (1) Six foot AC Power Cord and cable clamp.

•

Heavy Duty Enclosure.

•

ELK-P412K includes (1) 12v Battery.

•

Lifetime Limited Warranty, call for details.

•

Automatic Low Battery Cutoff Circuit Protects Battery

•

from Deep Discharge.

SPECIFICATIONS

DC Output Voltage: 13.8 Volts D.C.

•

Current Rating: 4 Amps .

•

Auto Resetting "fuseless" circuit breakers (PTC).

•

AC Input Voltage Range: 85~264VAC @ 47~63Hz.

•

Low Battery Cutoff: ~=10 Volts.

•

Ripple & Noise: 100mVp-p.

•

Enclosure Dimensions: 12.5"H x 7.5"W x 3.75"D.

•

Features and Specifications subject to change without notice.

NEG

OUTPUT 1

POWER ON LEDS

+12V

NEG +12V

OUTPUT 2

POWER
ON

SW1

POWER
OFF

NEG +12V

OUTPUT 3

+

14.5VDC IN

-

+

BATTERY

-

4 AMP POWER SUPPLY

FILE E127738

Before plugging

in the power

cord, replace the

snap-on cover

over the AC

terminals for

shock

protection

AC

INPUT

EARTH

GROUND

OUTPUT

G SHOCK

DC

LN -V+V

GRDNEUTRLLINE

DO NOT ADJUST

(FACTORY SET)

WARNIN

HAZARD

POWER
ON LED

AC

INSTALLATION / OPERATION

1. Set Master Power Switch (SW1) to Power Off.

2. Mount enclosure in secure location near an AC power
outlet that is not controlled by a switch.(supplied
power cord is 6 feet long)

3. Connect devices to be powered to the screw
terminals for DC output.The power distribution board
has three sets of outputs, each set is limited to 2.5
amps. If a device requires more that 2.5 Amps, parallel
two sets of terminals. (DO NOT EXCEED 4 AMPS)

4. Connect Battery to the battery wires, observe polarity.

5. Plug in the AC cord. Warning High Voltage is now
present at the power supply AC input terminals.

6. Set the Master Power Switch to Power On. The LEDs
at the power outputs should be on (if any are off,
check for overloaded condition). The connected
devices are now powered.

7. If AC power is lost, the Low Battery circuit will
disconnect the battery if it's voltage drops below 10
Vdc. This helps to prevent "deep discharging" of the
battery.

LOAD 1

LOAD 2

LOAD 3

12 Volt Battery

(Included with ELK-P412K)

P.O. Box 100 • Hildebran, NC 28637 USA • 828-397-4200 • 828-397-4415 FAX
http://www.elkproducts.com • email: [e-mail]

03/04

BLACK

120VAC POWER CORD (6')

RED

ELK-P412 Installation & Hookup Examples

APPLICATION: DUAL 2 AMP HOOKUP

For two separate 2 Amp continuous loads. DO NOT
EXCEED 4 AMPS TOTAL. The third output can not
be used in this configuration.

ELK-967 POWER DISTRIBUTIO N MODULE

POWER ON LEDS

NEG

+12V

OUTPUT 1

-

2 AMP LOAD

(Sirens,etc)

NEG +12V

OUTPUT 2

+

POWER
ON

SW1

POWER
OFF

+

-

+

-

NEG +12V

OUTPUT 3

-

2 AMP LOAD

(Cameras, etc )

14.5VDC IN

BATTERY

+

4 AMP POWER SUPPLY

WARNING

SHOCK

HAZARD

EARTH

GROUND

AC

INPUT

L

N

GRDNEUTRLLINE

OUTPUT 3 CAN NOT

BE USED IN THIS
CONFIGURATION

-V

DC

OUTPUT

+V

BLACK

12 Volt
Battery

POWER
ON LED

AC

RED

APPLICATION: 4 AMP HOOKUP

Parallel any two outputs together for heavy loads up
to 4 AMPS continuous. The third output can not be
used in this configuration.

ELK-967 POWER DISTRIBUTIO N MODULE

POWER ON LEDS

NEG

+12V

NEG +12V

OUTPUT 1

OUTPUT 2

-

4 AMP LOAD

(CONTINUOUS)

POWER
ON

SW1

POWER
OFF

NEG +12V

OUTPUT 3

+

+

14.5VDC IN

-

+

BATTERY

-

OUTPUT 3 CAN NOT

4 AMP POWER SUPPLY

AC

INPUT

L

N

BE USED IN THIS
CONFIGURATION

WARNING

SHOCK

HAZARD

EARTH

GROUND

GRDNEUTRLLINE

OUTPUT

-V

DC

+V

BLACK

12 Volt
Battery

POWER
ON LED

AC

RED

BLOCK DIAGRAM of DC Output Terminals

Each output can provide up to 2.5 Amps each (fused at

2.5 amps). However, the combined load from all outputs
must not exceed 4 Amps continuously.

4 AMP POWER SUPPLY and BATTERY

(CURRENT DRAW OVER 4 AMPS WILL COME FROM THE BATTERY)

2.5 AMP

FUSE (PTC)

OUTPUT 1

UP TO

2.5 AMPS

-

+

2.5 AMP

FUSE (PTC)

OUTPUT 2

UP TO

2.5 AMPS

--

++

CONNECT LOADS TO EACH OUTPUT OR COMBINE

OUTPUTS TO SUPPLY MORE CURRENT

(DO NOT TO EXCEED 4 AMPS TOTAL)

2.5 AMP

FUSE (PTC)

OUTPUT 3

UP TO

2.5 AMPS

APPLICATION: AC Power Failure Indicator

This hookup will activate a 12 volt sounder if AC Power
is lost.The ELK-912 relay will be energized while AC
Power is ON. If AC Power is lost then the relay will turn
off closing the COM and N.C. contacts to activate the
sounder. The sounder is powered from the Battery.

ELK-967 POWER DISTRIBUTIO N MODULE

POWER ON LEDS

NEG

+12V

NEG +12V

OUTPUT 1

OUTPUT 2

LOAD 1 LOAD 2

12 Volt
Battery

RED

BLACK

POWER
ON

SW1

POWER
OFF

NEG +12V

OUTPUT 3

+

14.5VDC IN

-

+

BATTERY

-

4 AMP POWER SUPPLY

WARNING

SHOCK

HAZARD

EARTH

GROUND

AC

INPUT

L

Voltage is lost here during

AC Power Failure which will

cause the relay to drop out

and activate the sounder

OUTPUT

-V

N

GRDNEUTRLLINE

-

12 VOLT

SOUNDER

DC

+V

AC
POWER
ON LED

ELK-912 RELAY

NOCOMNC

-

+

+