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Maximal11D/Maximal33D/Maximal55D/Maximal77D/Maximal75D Access Power Controllers (PTC)
• Sixteen (16) unswitched filtered and electronically regulated aux . power outputs (outputs are rated @ 2 .5A) .
• ACM8CB maximum current is 2 .5A per output .
• Red LEDs on ACM8CB board indicate individual outputs are triggered (relays energized) .
• Fire Alarm disconnect (latching or non-latching) is individually selectable for any or all of the
sixteen (16) outputs .
Fire Alarm disconnect input trigger options:
a) Normally open (NO) or normally closed (NC) dry trigger input .
b) Polarity reversal input from FACP signaling circuit .
• Green LED on ACM8CB board indicates FACP disconnect is triggered .
• FACP output relay indicates that FACP input is triggered
(form “C” contact rated @ 1A/28VDC not evaluated by UL) .
• Power supply input options:
a) Factory installed power supplies provide common power for both ACM8CB boards and all connected
access control devices .
b) An optional UL Listed power-limited external access control power supply may be connected to isolate
the ACM8CB boards from the access control devices (only applicable on Maximal11D).
• ACM8CB board main fuses are rated @ 10A . Output PTCs are rated @ 2 .5A .
• Built-in charger for sealed lead acid or gel type batteries .
- Maximum charge current is 0 .7A for AL400ULXB2, AL600ULXB and AL1012ULXB power supply boards .
- Maximum charge current is 3 .6A for AL1024ULXB2 power supply board .
• Automatic switch over to stand-by battery when AC fails .
• Zero voltage drop when unit switches over to battery backup (AC failure condition) .
• Short circuit and thermal overload protection with auto reset .
• Green AC input and red DC output LED indicators on power supply board(s) .
• AC fail supervision (form “C” contact rated @ 1A/28VDC) .
• Battery fail and battery presence supervision (form “C” contact rated @ 1A/28VDC) .
• Enclosure accommodates up to four (4) 12VDC/12AH batteries .
Enclosure dimensions: 26” x 19” x 6 .25” (660 .4mm x 482 .6mm x 158 .8mm) .
MaximalD Installation Instructions:
Wiring methods shall be in accordance with the National Electrical Code/NFPA 70/ANSI, and with all local
codes and authorities having jurisdiction . Product is intended for indoor use only .
Power Supply Board LED Diagnostics
(pg. 6)
Access Power Controller LED Diagnostics
(pg. 6)
Power Supply Board Terminal Identification
(pg. 7)
Access Power Controller Terminal Identification
(pg. 7)
Power Supply Board Stand-by Battery Specifications
(pg. 8)
Power Supply Board Output Voltage Settings
(pg. 9)
Access Power Controller Typical Application Diagram
(pg. 9)
FACP/Optional Power Supply Hook-up Diagrams
(pg. 17-18)
1 . Mount unit in the desired location . Mark and predrill holes in the wall to line up with the top three key
holes in the enclosure . Install three upper fasteners and screws in the wall with the screw heads protruding .
Place the enclosure’s upper keyholes over the three upper screws, level and secure . Mark the position of the
lower three holes . Remove the enclosure . Drill the lower holes and install the three fasteners . Place the
enclosure’s upper keyholes over the three upper screws . Install the three lower screws and make sure to
tighten all screws (Enclosure Dimensions, pg. 20) .
2 . The power supply is pre-wired to the ground (chassis) . Connect main incoming ground to the provided
green grounding conductor lead . Connect unswitched AC power (115VAC, 60Hz) to the terminals marked
[L, N] on both power supply boards . Green “AC” LED on power supply board will turn on . This light can
be seen through the LED lens on the door of the enclosure . Use 14 AWG or larger for all power connections .
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 . Select desired DC output voltage by setting SW1 to the appropriate position on the power supply board
(Maximal11D and Maximal33D) (Fig. 1, pg. 9). Maximal55D power supply is factory set at 12VDC .
Maximal77D power supply is factory set at 24VDC . Maximal75D consists of one (1) power supply board
that is factory set at 12VDC, and one (1) power supply board that is factory set at 24VDC .
4 . Measure the output voltage of the unit before connecting any devices to ensure proper operation .
Improper or high voltage will damage these devices .