Altronix AL175220 Installation Instructions

AL175220 and AL175X220 are power-limited power supply/chargers that converts 220VAC (working range 198VAC -
256VAC), 50/60Hz input into two individually PTC protected 12VDC or 24VDC outputs (see specifications).
Input:
• Input 220VAC / 60 Hz, 0.3A.
Output:
• 12VDC or 24VDC selectable output.
• Power-limited outputs.
• 1.75A continuous supply current @ 12VDC or 24VDC.
• Aux relay output (form "C" contacts).
• Filtered and electronically regulated output.

Battery Backup:

• Maximum charge current: 400mA.
• Automatic switch over to stand-by battery when AC fails.
Output VDC Switch Position
12VDC
24VDC

Stand-by Specifications:

Output
12VDC / 7 AH Battery
24VDC / 7 AH Battery
The units should be installed in accordance with article 760 of The National Electrical Code or NFPA 72 as well as all
applicable Local Codes.
See Terminal Identification Chart on Pg. 3 for a description of each terminal function.
1. Mount unit in the desired location. Mark and predrill holes in the wall to line up with the top two keyholes in the
enclosure. Install two upper fasteners and screws in the wall with the screw heads protruding. Place the enclosure's
upper keyholes over the two upper screws; level and secure. Mark the position of the lower two holes.
Remove the enclosure. Drill the lower holes and install two fasteners. Place the enclosure's upper keyholes over
the two upper screws. Install the two lower screws and make sure to tighten all screws (Enclosure Dimensions, pg. 3).
2. Connect unswitched AC circuit (220VAC, 50/60Hz) as follows: Green branch wire (ground) connects to the terminal
marked , Line connects to the terminal marked [L], and Neutral connects to the terminal marked [N] of the Inlet
Appliance Connector. (Fig. 1, pg. 2). Use 18 AWG or larger for all power connections. Use 18 AWG or larger for all
power connections (Battery, AC input, DC outputs). Use 22 AWG to 18 AWG for power-limited circuits
(trigger inputs, dry outputs).
Keep power-limited wiring separate from non power-limited wiring (220VAC / 60Hz Input, Battery Wires).
Minimum 0.25" spacing must be provided.
CAUTION: Do not touch exposed metal parts. Shut branch circuit power before installing or servicing equipment.
There are no user serviceable parts inside. Refer installation and servicing to qualified service personnel.
3. Set the unit to the desired DC output voltage by setting switch SW1 to the appropriate position
(Power Supply Output Specification Table, pg. 1).
220VAC Input
4. Measure output voltage before connecting devices. This helps avoiding potential damage.
50/60Hz, 0.3A
5. Connect battery to the terminals marked [+ BAT -] (battery leads included). Use two (2) 12VDC batteries connected
Black Lead
in series for 24VDC operation.
White Lead
Note: For Access Control applications batteries are optional. When batteries are not used, a loss of AC will result in
the loss of output voltage. When the use of stand-by batteries is desired, they must be lead acid or gel type.
6. Connect appropriate signaling notification devices to AC Fail supervisory relay outputs marked [NC, NO, C].
7. For Access Control Device & Fire Alarm Interface connections refer to the desired Application Diagrams (pg. 4)
and Terminal Identification Chart, pg. 2.
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AL175220 • AL175X220
Access Control Power Supply/Chargers

Power Supply Output Specifications:

Max. Stand-by Load DC
SW1 OFF
SW1 ON
4 hr. of Stand-by and 5 Minutes of Alarm
Stand-by = 1.25A
Alarm = 1.25A
Installation Instructions:

Overview:

Specifications:

Supervision:
• AC fail supervision (form "C" contacts).
• AC input and DC output LED indicators.
• Short circuit and thermal overload protection.
• Unit includes: power supply, transformer, and enclosure.

Enclosure Dimensions:

AL175220:
8.5" x 7.5" x 3.5" (215.9mm x 190.5mm x 88.9mm).
AL175X220:
13.5" x 13" x 3.25" (342.9mm x 330.2mm x 82.55mm).
Max. Alarm Load DC
1.75A
Battery (optional)
1.75A
Two (2) 12VDC
12VDC
AL175220 Series