Altronix LPS3AC Installation Instructions
LPS3AC - Linear Power Supply/Charger
OPEN SWITCH
CLOSED SWITCH
Switch Detail
SW2
12V-CLOSED
24V-OPEN
Overview:
LPS3AC linear power supply/charger will convert a low voltage AC input to a 12VDC/24VDC output. This power supply
is specifically designed to provide the power needed by the most demanding security and access control applications.
Specifications:
Input:
• 16VAC or 28VAC (refer to Voltage Output/Transformer Selection Chart).
Output:
• 12VDC/24VDC selectable output.
• 2.5 amp continuous supply current.
• Filtered and electronically regulated output.
• Thermal overload and short circuit protection.
Battery Backup:
• Built-in charger for sealed lead acid or gel type batteries.
Maximum charge current 500mA.
•
• Automatic switch over to stand-by battery.
• Fused battery protection (circuit breaker available).
• Includes battery leads.
Supervision:
• Provides AC Fail supervision (Form “C” contacts).
Visual Indicators:
• AC input and DC output LED indicators.
Board Dimensions (approximate):
6.5”L x 3.5”W x 1.75”H
Specified at 25˚ C ambient.
Fig. 1
Voltage Output/Transformer Selection Table:
e Switch Transformer Requirements
Output
Voltag
Position (Recommended Altronix Part #’s)
12VDC Closed 16VAC / 56 VA (T1656).
24VDC
Open
24VAC or 28VAC / 100VA
(Altronix model
T2428100)
Note: Transformers with higher VA ratings may be used.
Installation Instr
uctions:
The LPS3AC should be installed in accordance with The National Electrical Code and all applicable Local Regulations.
1. Mount the LPS3AC in desired location / enclosure.
2. Set DC output voltage using switch SW2
(Fig. 1) (refer to Voltage Output/Transformer Selection Chart).
3. Connect proper transformer to terminals marked AC (refer to Voltage Output/Transformer Selection Chart).
4. Measure output voltage before connecting devices. This helps avoid potential damage.
5. Connect devices to be powered to terminals marked [ --- - DC +].
6.
When the use of stand-by batteries are desired, they must be lead acid or gel type.
Connect batter
Use tw
o (2) 12VDC batteries connected in series for 24VDC operation.
y to terminals marked [+ BAT --- ] on the unit (battery leads included).
7. When batteries are not used a loss of AC will result in the loss of output voltage.
8. Connect supervisory trouble reporting devices to outputs marked [AC Fail].
LED Diagnostics:
AC
DC
AC
AC FAIL
CONTAC TS
AC
-- DC +
-- BAT +
NC C NO
SW1
12V-CLOSED
24V-OPEN
SW2
12V-CLOSED
24V-OPEN
Red (DC) Green (AC) Power Supply Status
O
N ON Normal operating condition.
ON OFF Loss of AC, Stand-by battery supplying power.
OFF ON No DC output. Short circuit or thermal overload condition or defective unit.
OFF OFF No DC output. Loss of AC. Discharged or no battery present.
Terminal Identification:
Terminal Function/Description
Legend
AC/AC Low voltage AC input (refer to Voltage Output/Transformer Selection Chart).
For 12VDC output use 16VAC with 56VA power rating or higher.
For 24VDC output use 28VAC with 85VA power rating or higher.
--- DC + 12VDC-24VDC @ 2.5 amp continuous output.
--- BAT + Stand-by battery connections. Maximum charge rate 500mA.
AC FAIL Used to report loss of AC (e.g. connect to audible device or alarm panel).
N.C., C, N.O. Relay normally energized when AC power is present.
Contact rating 1 amp @ 120V
AC / 28VDC.
graphical errors. Product specifications are subject to change without notice.
y typo
. 112204
v
le for an
K15F
Altronix is not responsib
140 58th Street, Brooklyn, New York 11220 USA, 718-567-8181, fax: 718-567-9056
website: www.altronix.com, e-mail: info@altronix.com, Lifetime Warranty, Made in U.S.A.
C - Re
IILPS3A
MEMBER
Loading...