13.8 VDC
2.5 A
20 AH
XF16144
120 VAC, 1.25 A
16 VAC, 9.0 A
WHITE & BLACK WIRES
27.6 VDC
2.5 A
20 AH
XF29218
120 VAC, 2.50 A
29 VAC, 7.5 A
WHITE & BLACK WIRES
13.8 VDC
4.0 A
38 AH
XF16144
120 VAC, 1.25 A
16 VAC, 9.0 A
WHITE & BLACK WIRES
27.6 VDC
4.0 A
38 AH
XF29218
120 VAC, 2.50 A
29 VAC, 7.5 A
WHITE & BLACK WIRES
MODEL
OUTPUT
VOLTAGE CURRENT
BATTERY
TRANSFORMER
MODEL
INPUT
OUTPUT
LP3
LP5
AC FUSE
10A
ST C NC NO
+
-
+
-
AC
AC
BATTERY
DC OUTPUT
TRANSFORMER
OUTPUT ADJ
AC POWER
DC POWER
FAULT
DC OUTPUT
VOLTAGE
FAULT
SUPV
ON
OFF
12
24
SP/DC
AC
BA
T
BATTERY
FUSE
10A
FAULT RELAY
AND BATTERY CHARGER
DC POWER SUPPLY
BASE
MODEL LP5
MODEL LP3
LP3 - LP5 Linear DC Power Supply and Battery Charger
Features
• Regulated 12VDC or 24VDC single switch selectable output
• Selectable fault supervision with 2A Form-C dry contact output
• Charges lead acid or gel type batteries - includes battery cable kit
• Uninterrupted ouput on switch over to/from standby battery
• Status LEDs for AC input, DC output and Fault conditions
• Separately fused AC input and battery circuit
• Thermal overload and output short protection
• Compact design 5.1”w x 7.0”l x 1.5”h - includes mounting standoffs
BASE Electronics, Inc.
• 2856-C Janitell Road • Colorado Springs, CO 80906 • (719) 540-9697 • Fax (719) 540-9698
1. Mounting the Board Locate the unit inside a UL Listed NEMA 1 enclosure (such as a BASE LVPC Low Voltage Power Cabinet). Drill four
0.187" diameter holes (3/16”) to match the four corner holes in the printed circuit board. Push the nylon standoffs supplied into each hole and snap the
PCB module into place. Mounting with double-sided tape is not recommended.
2. Transformer Wiring Connect the appropriate Transformer input wires (black and white wires) to a 120VAC power source. Connect the two
Transformer output wires to the two Transformer ‘AC’ terminals of the Power Supply.
3. DC Output Setup With the tip of a small screwdriver, set the DC Output Voltage switch for the desired output voltage - 12 or 24 VDC. Turn on the
120VAC power source. The AC and DC green LEDs will light. Next, measure the voltage at the DC Output terminals with a voltmeter. The output
voltage is factory set as shown in the table above. However, if a field adjustment is desired, use a small screwdriver to slowly adjust the output voltage
at the potentiometer labeled
OUTPUT ADJ
. Then turn off the 120VAC power source before proceeding with the installation.
4. Fault Supervision Setup Locate the 3 dip switches labeled
FAULT SUPV
.
SP/DC
= Supervision Power / DC Output Supervision. This switch
ON
will enable the Fault Supervision relay and will enable monitoring
of the DC Output for short or low output conditions. If fault supervision is not required, place the
SP/DC
dip switch in the
OFF
position. This will reduce the no-load current draw by approx. 40 mA.
AC
= AC Input Power Supervision. This switch
ON
will enable monitoring of the AC Input for AC power loss or blown AC power
fuse. This switch will have no effect if
SP/DC
is
OFF
.
BATT
= Battery Power Supervision. This switch
ON
will enable monitoring of the Battery Set for low battery, shorted battery or
reversed polarity hookup (blown battery fuse). Battery presence is not monitored. This switch will have no effect if
SP/DC
is
OFF
.
Turn this switch
OFF
if no battery will be used.
FAULT
SUPV
ON
OFF
SP/DC
AC
BA
T
T
5. Fault Relay Ouput Terminals The Fault Relay Form-C contacts are rated at 2 Amps. The terminals are labeled for when the relay is de-energized
(selected fault condition is present). The relay is normally energized when no selected fault condition exists. The ST terminal is a Spare Terminal and
is not connected to anything. It can be used as an easy splice point for an end-of-line resistor when monitoring the fault relay with a supervised circuit.
6. DC Output Wiring Connect output wiring to the DC OUTPUT terminals. Observe and verify correct DC polarity before powering the unit.
Incorrect polarity may damage user equipment. See table above for maximum DC output current.
Installation Instructions
* * * WARNING * * *
Turn off all power feeding the module terminals before installing, servicing or changing any switch settings, wiring or fuses.
Failure to observe this warning may cause electrical shock hazard or may damage internal or external circuit components.
See other side for continuation...
Find us on the Web
:
www.baseelectronics.com
BASE
