Altronix LPS3 Installation Instructions Manual

Altronix

Overview:

The LPS3 Linear Power Supply / Charger will convert a low voltage AC input to a low voltage 12/24VDC
output. This power supply is specifically designed to provide to power needed by the most demanding security
and access control applications.

Specifications:

• Field selectable 12/24VDC power limited output.
• 2.5 amps continuous supply current.
• Filtered and electronically regulated output.
• Built-in charger for sealed lead acid or gel type batteries.
• Maximum charge current 500mA.
• Automatic switch over to stand-by battery.
• AC input and DC output LED indicators.
• Over voltage protection.
• Thermal overload and short circuit protection.
• Fused battery protection (circuit breaker available).
• Efficient switch mode design.
• Includes battery leads.
Board Dimensions: 6.5"L x 3.5"W x 1.75"H
Specified at 25˚ C ambient.
Voltage Output/Transformer Selection Table:
Output Voltage
12VDC
24VDC
Note: Transformers with higher VA ratings may be used.

Installation Instructions:

The LPS3 should be installed in accordance with The National Electrical Code
and all applicable Local Regulations.
1. Mount the LPS3 in desired location / enclosure.
2. Set DC output voltage using switch SW2 (refer to voltage output/transformer selection table).
3. Connect proper transformer to terminals marked AC (refer to voltage output/transformer selection table).
4. Connect devices to be powered to terminals marked [--- DC +].
Note: It is good operating practice to measure and verify output voltage before
connecting devices to ensure proper operation of equipment.
5. When the use of stand-by batteries are desired, they must be lead acid or gel type.
Connect battery to terminals [+ BAT ---] as marked on the unit (battery leads included).
Use two (2) 12VDC batteries connected in series for 24VDC operation.
Note: When batteries are not used a loss of AC will result in the loss of output voltage.
IILPS3-Rev.122198
®
LPS3 - Linear Power Supply/Charger
Switch Transformer Requirements
Position (Recommended Altronix Part #'s)
Closed 16VAC / 56 VA (T1656)
Open 28VAC / 100 VA (T2885)
AC DC
ALTRONIX CORP. "LPS3 POWER SUPPLY"
12V Closed
24V Open