Overview:
OLS20 power supply/charger converts 115VAC / 60Hz input, into a 12VDC @ 1 amp or 24VDC @ .5 amp of
continuous supply current (refer to specifications). This general purpose power supply has a wide range of application
for access control and security system accessories that require additional power.
Specifications:
Input:
• 115VAC / 60Hz, .5 amp.
Output:
• 12VDC or 24VDC selectable operation.
• .5 amp continuous supply current @ 24VDC
1 amp continuous supply current @ 12VDC.
• Filtered and electronically regulated outputs.
• Short circuit and thermal overload protection.
Battery Backup:
• Built-in charger for sealed lead acid or gel type batteries.
•
Maximum charge current .5 amp.
• Automatic switch over to stand-by battery when AC fails.
Additional Features:
• AC input and DC output LED indicators.
• Includes battery leads.
Board Dimensions (approximate): 2.6”W x 3.1”L x 1.3”H
Specified at 25˚ C ambient.
Voltage Output Selection Table:
Output VDC Switch Position Max. Load DC
12VDC SW 1 - Closed 1.2 amp
24VDC
SW1 - Open .5 amp
Installation Instructions:
The OLS20 should be installed in accordance with The
National Electrical Code and all applicab
le Local Re
gulations.
1. Mount the OLS20 in desired location/enclosure.
2. Set the OLS20 to desired DC output voltage via SW1
(refer to Voltage Output Selection Table).
3. Connect AC power to connector #1
(Fig. 1) (black & white flying leads) and ground (green flying lead)
Use 18 AWG or larger for all power connections(Battery, AC input).
Keep power limited wiring separate from non-power limited wiring (115VAC / 60Hz Input, Battery Wires).
Minim
um .25” spacing m
ust be pr
o
vided.
4. Measure output voltage before connecting devices. This helps avoid potential damage.
5. Connect devices to be powered to terminals marked [-- DC +]
(Fig. 1).
6.
When the use of stand-by batteries are desired, they must be lead acid or gel type.
Connect battery to terminals marked [-- BAT +]
(Fig. 1).
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.
For continuous protection against fire replace fuse with the
same type and rating 5mm - 20mm, 250V, 2A
OLS20 - Offline Power Supply/Charger
MADE IN USA
LGN
--- BAT +
O
pen - 24V
Closed - 12V
S
W1
CONNECTOR #1
Gr WhBk
DC
PTC2
V
R1
A
C
--- DC +
Fig. 1
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