- 2 -
AL201UL
Overview:
Altronix AL201UL is a power-limited power supply/charger that converts a 24VAC / 60Hz plug-in Transformer
input into 12VDC output (refer to specifications). The AL201UL is UL Listed for Burglar Alarm Installation
(UL 603), and for Access Control (UL 294). It must be installed in accordance with National and Local Electrical
Codes and Regulations.
Specifications:
Power Supply Output Specifications:
Output VDC
Max. Stand-by Load DC
Max. Alarm Load DC
Battery (optional)
12VDC
1.75A
1.75A
12VDC / 7AH
Stand-by Specifications:
Output
4 hr. of Stand-by & 5 Minutes of Alarm
12VDC / 7 AH Battery
Stand-by = 1.25A
Installation Instructions:
Wiring methods shall be in accordance with the National Electrical Code/NFPA 70/NFPA 72/ANSI, and with
all local codes and authorities having jurisdiction. Product is intended for indoor use only.
Refer to Terminal Identification Chart on page 2 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 the three 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. 4). Secure enclosure to earth ground.
2. Connect 24VAC, 40VA UL Listed Class 2 direct plug-in transformer to the terminals “XFMR INPUT”.
Use 18 AWG or larger for all power connections (Battery).
Use 22 AWG to 18 AWG for power-limited circuits (DC output, AC FAIL and LOW BAT supervisory relays).
Keep power-limited wiring separate from non power-limited wiring (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. Measure output voltage before connecting devices. This helps avoiding potential damage.
4. Connect battery to the terminals [+ BAT –] as marked on the unit (battery leads included).
5. Connect appropriate signaling notification devices to AC Fail and Low Bat supervisory relay outputs.
Note: To meet UL requirements, AC Supervisory outputs must be connected to the zone of Alarm Control
Panel or to visual AC trouble indicator.
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.
Agency Listings:
• UL294
Access Control.
• UL603
Power Supplies for Use with
Burglar Alarm Systems.
Input:
• 24VAC, 40VA from UL Listed
Class 2 transformer.
Output:
• 12VDC output @ 1.75A continuous supply current.
• Class 2 Rated power-limited auto-resettable output.
• PTC protected output rated @ 2.5A.
• Filtered and electronically regulated output.
• Short circuit and thermal overload protection.
Battery Backup:
• Built-in charger for sealed lead acid or
gel type batteries.
• Automatic switch over to stand-by battery when
AC fails.
• Maximum charge current 0.4A.
Supervision:
• AC fail supervision (form “C” 1A @ 28VDC).
• Low battery supervision (form “C” 1A @ 28VDC).
Visual Indicators:
• AC input and DC output LED indicators.
Enclosure Dimensions:
8.5” x 7.5” x 3.5” (215.9mm x 190.5mm x 88.9mm).
