Elk Products ELK-P412 User manual

P.O. Box 100 • Hildebran, NC 28637 USA • 828-397-4200 • 828-397-4415 FAX
http://www.elkproducts.com • email: [e-mail]
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. It distributes 12 Volts D.C. power to three (3) sets of DC power termi-
nals, 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.
Power Supply
4 Amp, 12 Volt DC Power Supply &
Battery Charger with Enclosure
12 Volt Battery
(Purchase separately)
AC
INPUT
BLACK
NEG
BATTERY
+
-
POWER
ON
POWER ON LEDS
LN -V+V
DC
OUTPUT
EARTH
GROUND
4 AMP POWER SUPPLY
POWER
OFF
SW1
14.5VDC IN
+
-
RED
+12V
OUTPUT 1
NEG +12V
OUTPUT 2
NEG +12V
OUTPUT 3
120VAC POWER
CORD (6')
GRDNEUT RLLINE
Before plugging
in the power
cord, replace the
snap-on cover
over the AC
terminals for
shock protection
AC
POWER
ON LED
DO NOT ADJUST
(FACTORY SET)
LOAD 3
WARNING
SHOCK
HAZARD
FILE E127738
LOAD 1
LOAD 2
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.
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.
•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"H x 12"W x 3.25"D.
Features and Specifications subject to change without notice.
ELK-P412
05/10

ELK-P412 Installation & Hookup Examples
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.
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.
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.
+ -
CONNECT LOADS TO EACH OUTPUT OR COMBINE
OUTPUTS TO SUPPLY MORE CURRENT
(DO NOT TO EXCEED 4 AMPS TOTAL)
2.5 AMP
FUSE (PTC)
4 AMP POWER SUPPLY and BATTERY
(CURRENT DRAW OVER 4 AMPS WILL COME FROM THE BATTERY)
2.5 AMP
FUSE (PTC)
2.5 AMP
FUSE (PTC)
OUTPUT 1
UP TO
2.5 AMPS
--
++
OUTPUT 2
UP TO
2.5 AMPS
OUTPUT 3
UP TO
2.5 AMPS
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.
BLACK RED
12 Volt
Battery
OUTPUT 3
CAN NOT BE
USED IN THIS
CONFIGURATION
+
-
2 AMP LOAD
(Sirens,etc)
+
-
2 AMP LOAD
(Cameras, etc)
AC
INPUT
NEG
BATTERY
+
-
POWER
ON
POWER ON LEDS
LN -V+V
DC
OUTPUT
EARTH
GROUND
4 AMP POWER SUPPLY
POWER
OFF
SW1
14.5VDC IN
+
-
+12V
OUTPUT 1
NEG +12V
OUTPUT 2
NEG +12V
OUTPUT 3
GRDNEUTRLLINE
AC
POWER
ON LED
DO NOT ADJUST
(FACTORY SET)
WARNING
SHOCK
HAZARD
BLACK RED
12 Volt
Battery
OUTPUT 3
CAN NOT BE
USED IN THIS
CONFIGURATION
+
-
4 AMP LOAD
(CONTINUOUS)
AC
INPUT
NEG
BATTERY
+
-
POWER
ON
POWER ON LEDS
LN -V+V
DC
OUTPUT
EARTH
GROUND
4 AMP POWER SUPPLY
POWER
OFF
SW1
14.5VDC IN
+
-
+12V
OUTPUT 1
NEG +12V
OUTPUT 2
NEG +12V
OUTPUT 3
GRDNEUTRLLINE
AC
POWER
ON LED
DO NOT ADJUST
(FACTORY SET)
WARNING
SHOCK
HAZARD
BLACK RED
12 Volt
Battery
AC
INPUT
NEG
BATTERY
+
-
POWER
ON
POWER ON LEDS
LN -V+V
DC
OUTPUT
EARTH
GROUND
4 AMP POWER SUPPLY
POWER
OFF
SW1
14.5VDC IN
+
-
+12V
OUTPUT 1
NEG +12V
OUTPUT 2
NEG +12V
OUTPUT 3
GRDNEUTRLLINE
AC
POWER
ON LED
DO NOT ADJUST
(FACTORY SET)
WARNING
SHOCK
HAZARD
Voltage is lost here during AC Power
Failure which will cause the relay to
drop out and activate the sounder
12 VOLT
SOUNDER
+
-
NO COM NC -+
ELK-912 RELAY