LP-2 / LPS-2 Technical Sales Bulletin

LP-2 TECHNICAL SALES BULLETIN


HOME
ABOUT ESD
CONTACT ESD
ONLINE CATALOG
APPLICATION NOTES
ORDER QUESTIONS
DOWNLOAD LITERATURE
LIST PRICE & SELECTION GUIDE

LP-2 12/24vdc @ 2A Linear Power Supply Charger module

LP(S)-2 12/24vdc @ 2A Supervised Power Supply Charger module (S) may be added to any configuration

LP-4 12/24vdc @ 4A Two LP-2’s connected together

LP-2EST12 mounted in a 8”x 9” Enclosure with UL 16vac 50va Class II plug in Transformer

LP-2EST24 mounted itn a 8”x 9” Enclosure with UL 24vac 50va Class II plug in Transformer

LP-2T12 Module with UL 16vac 50va plug in Class II plug in Transformer

LP-2T24 Module with UL 24vac 50va plug in Class II plug in Transformer

LP-2EX12D4 mounted in a 14”x8” Enclosure with UL 16vac 56va open frame transformer and 4 fused outputs

Features LP-2 & LPS-2:

12vdc 2A /24vdc 2A Jumper Selectable
Electronic Current Protection
Units may be Paralleled to Double or Triple Current
Fused or Optional “C” PTC Circuit
Breaker
Battery Protection
Reversed Battery Protected
Precise Output Regulation for Charging
Sealed Lead Acid or Gel Type Batteries
Battery Online, No Drop or Switch Over
with AC Power Fail
Input and Output are Surge Protected
Power LED Indicator
Wire Ready Self Clamping Terminal Screws
12" Battery Leads with Protected Plug and Jack
Quality Manufactured in the USA
LPS-2 Supervised Features:
Trouble Relay “C” Contacts Indicates Low Battery and AC Power Fail
Battery Cut-Off Relay Disconnects Battery(s) when Depleted Preventing Deep Discharge

LPS-2

Caution Use appropriate mounting hardware the
heat sink is HOT with VOLTAGE

LPS-2Diag

DESCRIPTION


HOME
ABOUT ESD
CONTACT ESD
ONLINE CATALOG
APPLICATION NOTES
ORDER QUESTIONS
DOWNLOAD LITERATURE
LIST PRICE & SELECTION GUIDE

The LP-2/LPS-2 becomes an uninterruptible 2 Amp 12 or 24 volt DC power supply when used with a transformer and lead acid battery. The output is clean, continuous, linear DC that can be used to power the most sensitive electronic devices. These units can be paralleled to double or triple output current.
Selecting 12v or 24v with the 12/24 programming jumper sets the DC output, battery charge voltage, trip points for the supervisory relays and foldback current limiting. The battery charger will charge a Sealed, Gel, or wet lead acid Battery.
The current the battery draws from the LP-2/LPS-2 is determined by the battery's condition, capacity, temperature and state of charge. The LP-2/LPS-2 is protected against shorts and overloading with its electronic circuitry and battery fuse or PTC. This same circuitry also protects the minimum 50VA transformer. When the DC load requires more than maximum output provided by the LP-2/LPS-2, the battery can add up to 4 more amps. This may be necessary to sound a siren for the duration of an alarm. The LP-2/LPS-2 has a replaceable 4 amp battery fuse while the LP-2C/LPS-2C has an auto resetting 4A PTC circuit breaker.
To test the LP-2, battery and fuse: It is recommended that on a regular basis, the output should be checked for proper voltage and current while the AC power is disconnected.

SPECIFICATIONS

Input AC Transformer
Terminals 1 & 2 identified by .............. AC
12vdc at 2A DC Output ....... 16 – 18vac at 50VA
24vdc at 1.5A DC Output .......... 24vac at 50VA
24vdc at 2A DC Output........ 25 – 28vac at 70VA
12vdc at 1A DC Output....... 24 – 28vac at 50VA
Note: To Avoid damage to the transformer, do not use less than a 50VA (Volt Amp) rating. When selected for 12vdc output and using a 24vac transformer, limit the output current to less than 1 Amp.
AC LED Indicator (Next to AC Input Terminal Strip)
Indicates Input Power................... Red LED
DC Output Voltage Selector
12/24 Jumper on top right of board. Place toward desired voltage setting.
CAUTION Select voltage with load and battery(s) disconnected.
DC OUTPUT
Terminal 3 & 4 identified by................... DC
DC Output voltage............. Nominal 12vdc/24vdc
Output voltage.. Typical “AC ON” 13.75vdc/27.50vdc
DC Current maximum continuous rating......... 1.8A
Intermittent Current with Battery............. 6A
Note: Reserve at least 200ma for battery charging.
Load regulation, no load to 1.8A.......... .25%Typ
Ripple & noise @ 80% load............. 40mv pp Typ
Short circuit with foldback current limiting.. Yes
Maximum Current Output (No Battery)....... 2.6Amps
Short Circuit Current (No Battery).......... 700ma
Voltage Change after 1 year of Continuous Operation
(Long Term Stability)..................... .03VDC
Ambient operating temperature range.. -30oF to +130oF
Storage Temperature............... -60oF to 190oF
Paralleling Units for more power
Daisy chain each pin together. Pin 1 to 1, 2 to 2, 3 to 3 and pin 4 to 4. It is very important to keep the polarity of the pins the same. When using one battery, use just one battery port connection and trouble relay if applicable. Transformer specifications listed above must be at least double.
Battery Charging: (Header plug marked [–Bat+])
The battery charger is precision set to float charge 12V or 24V Sealed, Gel or wet lead acid batteries. Two 12V batteries are connected in series for 24V. A 12” battery cable assembly is provided to connect the module to a battery. Red (+) 12vdc, Black (–) Neg.
Optional 12” cable assembly for connecting two
12v batteries in series for 24volts...... 24SW
Optional 36” battery cable (1) P/N:... WA-36IBAT
Battery(s), any type of lead acid.. 12v 4AH-100AH
Battery Fuse............................. 4A 3AGC
Battery PTC Auto Resetting.................... 4A
Reverse battery hookup protection........... Yes
To estimate the recharge time in hours for depleted battery(s), multiply the AH rating times 2.2 (AH x 2.2). As an example, a 24v system with two depleted 12v 7AH batteries would take about 15.4 hours to re-charge to 90% capacity. To select battery(s), see standy selection table www.securitypower.com/an3batby.pdf .
LPS-2 Supervised added features:
Trouble Output: 3P Terminal block - annunciates low battery & AC Fail “C” contacts rating................................ 2A/120vac
Three position trouble terminal block is marked “NO, C, NC” are shown in the Normal, energized, no trouble condition.
Trouble Low battery/AC Fail voltage..... 12.1vdc/24.2vdc
Battery Cutoff
Battery Cutoff Voltage............ 9.9vdc/19.8vdc
Battery Cutoff internal relay contacts....... 15A
Battery Cutoff Relay is normally energized for fail-safe operation.
Physical
Center-to-Center Terminal Block Spacing with Self Clamping Screws .375”
Module Size................ 3 ¾”H x 3 11/16”W x 1 5/8”D
Mounting Holes Center-to-Center..... 3 5/16” W 3 7/16”H
Components Weight
LPS-2 module..................................... 3.2oz
9x9 Enclosure................................... 3.8lbs
100va Transformer............................... 2.8lbs
50va Plug in Transformer....................... 1.7lbs
Safety
LP-2/LPS-2 meets safety UL1950 & EN60950

LP-2/LPS-2 Technical Sales Sheet/Instructions

Electronic Security Devices Incorporated 9/04/08 jb
Specifications are subject to change without notice

Electronic Security Devices
2200 North MacArthur
Tracy, CA 95376

                              E-mail: ESD@SecurityPower.com
                              Phone: (209) 229-7140
                              Fax: (209) 229-7145