Altronix AL400ULB Manual

The AL400ULB is a power-limited supply/charger that converts a 28VAC / 100VA input into a Class 2 Rated
power-limited 12VDC or 24VDC output (see specifications).
Agency Listings:
• UL Recognized component for Access Control
System Units (UL 294), Standard for Power
Supplies for Use with Burglar-Alarm Systems (UL 603),
Standard for Safety for Fire Protective Signaling
Systems (UL 1481).
Input:
• Input 28VAC / 100VA.
Output:
• Class 2 Rated power-limited output.
• 12VDC or 24VDC selectable output.
• 4 amp continuous supply current @ 12VDC.
• 3 amp continuous supply current @ 24VDC.
• Filtered and electronically regulated output.
Output
Switch Position
VDC
SW 1, 2 ON,
12VDC
SW 3, 4 OFF
SW 1, 2 OFF,
24VDC
SW 3, 4 ON
Output
12VDC / 40AH Battery
24VDC / 12AH Battery
24VDC / 40AH Battery
The AL400ULB should be installed in accordance with article 760 of The National Electrical Code or NFPA 72 as well
as all applicable Local Codes.
1. Mount AL400ULB in the desired location/enclosure.
2. Connect 28VAC / 175VA transformer to the terminals marked [AC, AC], (Fig. 1).
Use 18 AWG or larger for all power connections (Battery, DC output). Use 22 AWG to 18 AWG for the
power-limited circuits (AC Fail/Low Battery reporting).
Keep power-limited wiring separate from non power-limited wiring (115VAC / 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 AL400ULB to the desired DC output voltage by setting the switches to the appropriate positions
(Power Supply Output Specifications Table).
AL400ULB
UL Recognized Power Supply/Charger

Specifications:

Power Supply Output Specifications:
Max. Stand-by
Load DC
4.0 amp
200mA
3.0 amp
200mA
Stand-by Specifications:
4 hr. of Stand-by &
5 Minutes of Alarm
Stand-by = 4.0 amp
Alarm = 4.0 amp
- - - - - - - -
Stand-by = 3.0 amp
Alarm = 3.0 amp

Installation Instructions:

Overview:

Battery Backup:
• Built-in charger for sealed lead acid or gel type batteries.
• Maximum charge current 600mA.
• Automatic switch over to stand-by battery
when AC fails.
Visual Indicators:
• AC input and DC output LED indicators.
Supervision:
• AC fail supervision (form "C" contacts).
• Low battery supervision (form "C" contacts).
Additional Features:
• Short circuit and thermal overload protection.
Board Dimensions (W x L x H approximate):
4.1" x 7.1" x 1.75" (104.14mm x 180.34mm x 44.45mm)
Max. Alarm
Stand-by Battery
Load DC
4.0 amp 24V/40AH
4.0 amp 12V/12AH
3.0 amp
3.0 amp 24V/12AH
24 hr. of Stand-by &
5 Minutes of Alarm
Stand-by = 1.0 amp
Alarm = 4.0 amp
Stand-by = 200mA
Alarm = 3.0 amp
Stand-by = 1.0 amp
Alarm = 3.0 amp
(AL400ULB Board)
Output Dip Switches
24VDC
60 hr. of Stand-by &
5 Minutes of Alarm
Stand-by = 300mA
Alarm = 4.0 amp
- - - - - - - -
Stand-by = 300mA
Alarm = 3.0 amp