Linear Power-Gard User Manual
Power-Gard™ access system power supplies
This equipment is designed to be installed and serviced by security and
lock industry professionals
Installation & Wiring Instructions:
PG – 1224-3 12/24 VDC 2.5 Amp board power supply
PG – 1224-3C 12/24 VDC 2.5 Amp power supply in cabinet
These Power-Gard™ power supplies have the following characteristics:
• 12 or 24V DC output.
• For 12V, use a 16.5V or 24V AC, 40VA transformer.
• For 24V, use a 24V AC, 60VA transformer.
• 2.5 Amps output, including 0.5 Amps for maintaining battery float charge.
• Supervision
• Highly efficient switching design reduces build-up of heat.
• PS-1224-3 installs neatly into IEI Hub Max cabinet using enclosed screws
1) Select a dry secure location to mount the power supply. Board version
installs neatly into Hub Max access control cabinet.
2) Determine whether your application is 12 or 24V and place the S1 jumper
in the desired position.
3) Connect the NEG and +12V terminals on the power supply to the NEG and
+12V terminals on the device(s) to be powered.
4) Connect the battery wires to the terminals on the power supply marked
+BATT and BATT-. Be sure to observe the correct polarity.
5) Connect the transformer using 18 AWG wire to the terminals marked AC
IN. Polarity is not important.
6) Plug the battery onto the battery wires. Be careful to observe polarity.
7) The green LED should light after you have completed steps 5 and 6. Power
is now available at the terminals.
8) Output voltage should read between 13.5 and 13.9V for 12V operation. For
24V operation the voltage should be between 25 and 27.9 Volts. If you
need to change the voltage from its factory set value, adjust the
potentiometer at the top of the board. Warning: Damage may result if
you set the voltage to exceed 14V in a 12V application or 27.5 Volts
in a 24 Volt application. Safe levels will depend on the specifications of
the device being powered.
p/n E-0291301, rev 2.0
Note: Current ratings stated are maximum levels. For prolonged trouble free
life, it is recommended that continuous operation should be about 75% of the
Voltage Adjustment
24V 12V
AC DC
AC IN +V NEG + BATT -
maximum
WARNING: THE HEAT SINK WILL BECOME HOT. DO NOT TOUCH!
Warranty Policy
International Electronics Inc. (IEI) warrants its products to be free from defects in material and
workmanship when they have been installed in accordance with the manufacturer’s instructions and
have not been modified or tampered with. IEI does not assume any responsibility for damage or injury
to person or property due to improper care, storage, handling, abuse, misuse, normal wear and tear, or
an act of God.
IEI’s sole responsibility is limited to the repair (at IEI’s option) or the replacement of the defective
product or part when sent to IEI’s facility (freight and insurance charges prepaid) after obtaining
IEI’s Return Material Authorization. IEI will not be liable to the purchaser or any one else for
incidental or consequential damages arising from any defect in, or malfunction of, its products.
Except as stated above, IEI makes no warranties, either expressed or implied, as to any matter
whatsoever, including, and without limitation to, the condition of its products, their merchantability,
or fitness for any particular purpose. Warranty period: IEI Power-Gard power supplies are backed by
a limited lifetime warranty. If a product should fail under normal use and is returned to IEI, it will be
repaired or replaced with a new or refurbished product of the same type, at the discretion of IEI.
TECHNICAL SUPPORT – Service company - IEI’s Technical Support Department, call 1-800-3439502, between 8AM and 7PM (EST) Monday thru Friday. Questions may also be submitted
through our website, www.ieib.com
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