Altronix MAXIMAL77FV 16-Output Access Power Controller with Dual 24VDC Power Supplies
Overview
The Altronix MAXIMAL77FV is a high-capacity access control power distribution solution engineered for large commercial and enterprise deployments where a single power source must drive sixteen independently controlled door hardware loads. It converts a 220VAC input (working range 198–256VAC, 50/60Hz) into sixteen fused 24VDC outputs backed by dual power supplies, each rated at 9.6A — giving you up to 19.2A of total door-lock capacity in a single BC800 enclosure. For integrators sizing power for multi-door facilities, the MAXIMAL77FV eliminates the need for multiple single-channel supplies scattered across an IDF closet.
Key Features
- Dual 24VDC @ 9.6A Power Supplies: Two independent supplies share the load, so a single supply failure does not take down the entire system. Each supply is filtered and electronically regulated, protecting sensitive lock hardware from voltage spikes.
- 16 Independently Controlled Fused Outputs: Each output is individually fuse-protected at 2.5A and can be configured Fail-Safe or Fail-Secure — critical when mixed lock types (mag locks and electric strikes) share the same controller. Fuse protection isolates a shorted output without tripping the rest of the system.
- Selectable Fail-Safe/Fail-Secure or Dry-Contact Relay: All sixteen outputs are convertible to form-C relay contacts (5A rated), giving access control power supply integrators flexibility to drive locks, door holders, or auxiliary devices from the same board without external relays.
- FACP Fire Alarm Interface: The fire alarm disconnect is individually selectable per output — latching or non-latching — and accepts NO/NC dry contact or polarity-reversal input from a fire alarm control panel. In a high-rise or campus deployment, this means you can configure specific doors to release on alarm without affecting others.
- AC Fail and Battery Supervision: Form-C supervision contacts report AC loss, low battery, and battery presence back to the access control panel. The AC fail notification delay is field-selectable: 30 seconds (factory default) or 2 hours — useful for sites where brief grid fluctuations should not trigger false tamper events.
- Battery Backup — Up to 65AH: Supports up to 4× 12AH sealed lead-acid or gel batteries inside the enclosure, or 40AH/65AH in a separate enclosure. On AC loss, failover is instantaneous, keeping doors in their configured state during power events.
- 16 Auxiliary Unswitched Power Outputs: Each channel also provides an unswitched 2.5A auxiliary output — useful for powering readers, REX sensors, or door position switches without running a separate power feed.
- LinQ2 Ready: Supports Altronix's LinQ2 remote monitoring interface, allowing supervisory control and diagnostics over an IP network — a meaningful operational advantage in facilities with distributed IDFs that are not staff-monitored continuously.
- NDAA, TAA, BAA, CE, UL Listed: Meets federal procurement requirements (NDAA Section 889, TAA, BAA), making it appropriate for government facilities, DoD contractors, and federally funded projects. UL Listing satisfies AHJ requirements in most jurisdictions.
Integration & Compatibility
Trigger inputs accept normally-open (NO) or open-collector signals from virtually any access control panel, keypad, REX PIR, or push button. The MAXIMAL77FV is LinQ2 Ready for IP-based remote management. All interconnecting equipment must be UL Listed per Altronix requirements. The unit ships in a BC800 enclosure (19"W × 26"H × 6.25"D, 33.9 lbs) — plan your rack or wall-mount space accordingly before commissioning.
Frequently Asked Questions
Q: Is the MAXIMAL77FV NDAA Section 889 compliant?
A: Yes. The MAXIMAL77FV carries NDAA, TAA, and BAA compliance listings, making it eligible for federal, DoD, and government-funded installations.
Q: What input voltage does the MAXIMAL77FV require?
A: It requires 220VAC with a working range of 198VAC to 256VAC at 50/60Hz, drawing up to 5.4A. It is not designed for standard 120VAC North American circuits — confirm your feed before ordering.
Q: How many doors can the MAXIMAL77FV support?
A: Up to sixteen independently controlled outputs, each fused at 2.5A. Depending on your lock current draw, a single unit can support sixteen single-door or eight double-door (two outputs per door) configurations.
Q: Does the MAXIMAL77FV support battery backup?
A: Yes. It supports up to four 12AH/12VDC sealed lead-acid or gel batteries inside the BC800 enclosure, or up to 65AH in a separate enclosure. Failover on AC loss is instantaneous. Batteries are sold separately.
Q: Can individual outputs be set for Fail-Safe or Fail-Secure operation?
A: Yes. Each of the sixteen outputs is independently configurable as Fail-Safe, Fail-Secure, or converted to a dry form-C relay contact (5A rated), giving you per-door control over lock behavior during power loss.
Q: Is the fire alarm disconnect selectable per output?
A: Yes. The FACP fire alarm disconnect is individually selectable for any or all sixteen outputs, and can be set as latching or non-latching. Input accepts NO/NC dry contact or polarity-reversal from a fire alarm control panel.
When I spec the MAXIMAL77FV for a project, the first thing I flag to the engineering team is the 220VAC-only input requirement — this is not a drop-in for a standard North American 120V panel, and I've seen that catch integrators off guard mid-installation. Once you've confirmed your feed, though, this controller delivers a very clean 16-door power distribution solution: dual regulated 24VDC supplies at 9.6A each, all in a single BC800 enclosure.
Technical Highlights:
- Dual 9.6A Supplies: Each of the two on-board power supplies is independently filtered and electronically regulated. At full 16-output load, you have up to 19.2A of clean 24VDC available — more than enough headroom for a mix of mag locks (typically 500mA–650mA each) and electric strikes.
- Per-Output FACP Selectability: The fire alarm disconnect being individually selectable per output — not just a global cutover — is what separates this unit from simpler power controllers. In a hospital or government building where you need specific egress paths to release while secure areas stay powered, that granularity matters.
- LinQ2 Readiness: Remote IP-based supervisory monitoring means a facilities team can diagnose AC fail or battery conditions from a central management station without dispatching a technician to each IDF — a real operational cost reduction in campus deployments.
Deployment Considerations:
- The BC800 enclosure measures 19"W × 26"H × 6.25"D and weighs 33.9 lbs unloaded — factor wall-anchor load ratings and conduit knockout positions before mounting. Battery weight adds significantly if you populate all four internal battery positions.
- Operating temperature ceiling is 49°C (120°F). In a mechanical room or rooftop IDF that exceeds this during summer, you will need supplemental cooling or an alternative enclosure location — thermal shutdown here affects all sixteen doors simultaneously.
The MAXIMAL77FV is the right call for international or 220VAC-fed facilities — embassy compounds, European-standard industrial sites, or campus buildings on a 208/220V distribution network — where you need a single, UL-Listed, NDAA-compliant power controller to handle a full sixteen-door wing from one enclosure.
