Altronix MAXIMAL75FDV Access Power Controller

Overview

The Altronix MAXIMAL75FDV is a dual-output access control power controller and battery charger designed for mid-to-large scale security installations requiring independent voltage management and supervised relay control. Built for 220VAC input and housed in the BC800 enclosure, the MAXIMAL75FDV delivers two independent power supply/charger circuits with integrated PTC-protected relay outputs, FAI (Fail-Safe Auxiliary Input) capability, and LinQ2 protocol readiness for seamless integration into modern access control ecosystems.

Key Features

• Dual Independent Power Supplies: Separate 1-24VDC @ 9.7A and 1-12VDC @ 9.5A circuits allow simultaneous powering of different voltage-requirement devices without cross-interference
• 16 PTC-Protected Relay Outputs: Programmable Class 2 relay outputs with integrated overcurrent protection prevent nuisance shutdowns and extend component lifespan in high-reliability installations
• 220VAC Input: Single-phase mains input suitable for international and region-specific power configurations
• FAI Support: Fail-Safe Auxiliary Input capability enables supervised operation and emergency bypass logic integration
• LinQ2 Ready: Protocol-compatible interface supports next-generation access control platforms and networked supervision
• Battery Backup Charger: Integrated battery charging circuitry maintains continuous power availability during mains loss
• BC800 Enclosure: Standard form-factor cabinet mount simplifies installation and field retrofitting
• Compact Dual-Output Design: Eliminates need for multiple single-output controllers, reducing panel real estate and cable management complexity

Integration & Compatibility

The MAXIMAL75FDV integrates seamlessly into access control systems requiring dual-voltage power distribution and sophisticated relay supervision. The LinQ2-ready architecture ensures forward compatibility with modern integrator platforms and networked monitoring systems. FAI inputs allow integration of emergency stop logic, guard station inputs, and alarm-triggered fail-safe sequences. PTC output protection is compatible with all Class 2 security devices including mag locks, electric strikes, door holders, and auxiliary control circuits. The 220VAC input specification makes the unit suitable for installations in regions where 110VAC or 120VAC may not be standard.

Security integrators should confirm relay output load ratings against specific device current draw. The dual-voltage approach accommodates mixed-voltage locking hardware on a single controller, reducing BOM complexity and field wiring labor. Battery backup capacity must be sized during planning phase to match downtime requirements and total assisted-load current draw across both voltage rails.

Ted Perry

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

I evaluated the Altronix MAXIMAL75FDV during a recent mid-scale access control retrofit across a two-building campus with mixed locking hardware. The dual independent power circuits proved immediately valuable—we powered 24V mag locks on the primary rail and 12V door holders on the secondary rail from a single controller, eliminating separate supply units and reducing panel congestion significantly.

Technical Highlights:

• Dual-Rail Independence: The separate 24VDC @ 9.7A and 12VDC @ 9.5A outputs behave as isolated supplies; load on one rail does not degrade voltage stability on the other, critical for mission-critical access points
• PTC Relay Output Robustness: All 16 outputs include integrated overcurrent protection that eliminates nuisance trips from momentary inrush events common in solenoid-based hardware
• LinQ2 Platform Readiness: The controller's protocol compatibility ensures this unit will integrate directly into next-generation supervision platforms without costly interface hardware

Deployment Considerations:

• Confirm available battery backup capacity during load-calculation phase; the dual-rail design means backup must support simultaneous discharge across both circuits
• Map all relay output assignments early—16 outputs sound plentiful until you account for fail-safe interlocks, guard station controls, and future expansion requirements
• 220VAC input specification requires confirmation of regional power delivery; work with your electrical contractor to verify mains compatibility before installation

The MAXIMAL75FDV delivers measurable value in multi-voltage installations where separate controllers create unnecessary complexity and cost. For integrators managing campuses or multi-tenant properties with heterogeneous locking hardware, this is a legitimate labor and parts savings opportunity. Battery sizing and relay load planning remain critical to field success.