The Honeywell ACX631, manufactured by Cherokee International (now part of Advanced Energy), is a high-reliability power supply unit (PSU) with integrated Uninterruptible Power Supply (UPS) capabilities. Designed specifically for Honeywell security and fire alarm systems, the PSU 4-UPS A variant provides a stable DC output while managing backup battery charging and seamless failover. This ensures that critical security panels and communication modules remain operational during a primary AC power failure.
Product Specifications (Datasheet)
-
Model: ACX631 (PSU 4-UPS A)
-
Manufacturer: Cherokee International / Honeywell
-
Dimensions: 185 mm x 115 mm x 55 mm (L x W x H)
-
Weight: 0.95 kg
-
Country of Origin: USA / Mexico
-
Input Voltage: 100–240 VAC (Universal Input), 50/60 Hz
-
Output Voltage: 13.8 VDC (Typical for 12V lead-acid battery systems)
-
Current Rating: 4.0 Amperes (Continuous)
-
Battery Charging: Integrated smart charger for lead-acid backup batteries
-
Protection: Over-voltage, short-circuit, and thermal overload protection
-
Monitoring: Dedicated status signals for AC Fail and Low Battery
Key Application Fields
-
Access Control Systems: Providing primary and backup power for Honeywell Pro-Watch or WIN-PAK door controllers.
-
Intrusion Detection: Powering control panels and peripheral motion sensors.
-
Fire Alarm Sub-systems: Used in auxiliary power applications for notification appliances.
-
Video Surveillance: Ensuring continuous power for small DVRs or IP camera injectors.
-
Critical IT Nodes: Small-scale networking enclosures requiring DC-direct backup.
Product Usage Instructions
-
Mounting: Install the PSU inside a vented metal enclosure. Use the provided mounting holes to secure the unit, ensuring adequate clearance for airflow to prevent heat buildup.
-
AC Connection: Connect the AC mains (Live, Neutral, and Earth) to the designated input terminal block. Always ensure the circuit is de-energized during installation.
-
Battery Setup: Connect a compatible 12V sealed lead-acid (SLA) battery to the “BAT” terminals. Observe strict polarity (Red to +, Black to -) to avoid damaging the charging circuit.
-
DC Output: Connect the field devices to the “OUT” terminals. Ensure the total current draw of all devices does not exceed the 4.0A continuous rating.
-
Monitoring Logic: Connect the “AC Fail” and “Low Bat” dry contact outputs to your security panel’s digital inputs to receive real-time alerts regarding the power system health.
Q&A: Frequently Asked Questions
Q: Why is the output voltage 13.8V instead of exactly 12V? A: A voltage of 13.8V is the standard float-charge voltage required to maintain a 12V lead-acid battery at full capacity while simultaneously powering the connected load.
Q: Does this unit include the backup battery? A: No, the ACX631 is the power supply and charging module only. Batteries are typically purchased separately based on the required backup runtime (e.g., 7Ah or 14Ah).
Q: What does it mean if the AC Fail signal is active but the DC output is still working? A: This indicates the unit has successfully switched to battery backup mode. The devices are running on battery power, and you should investigate the primary AC source immediately.
Q: Can this power supply be used for 24V systems? A: No, the ACX631 is specifically designed for 12V nominal systems. Connecting it to 24V equipment may result in improper operation or hardware damage.
Find the ACX631 and other Cherokee International power solutions to keep your Honeywell security infrastructure running 24/7.
Similar Model Recommendations
-
Honeywell ACX632: A higher-capacity version of the PSU series for larger multi-door controllers.
-
Altronix AL600ULXB: A widely used alternative power supply/charger with similar 12VDC output specifications.
-
Cherokee International CAR0412: A compact front-end power supply often used in high-density rack applications.
-
Honeywell PW6K1ICE: An intelligent power controller often paired with these PSUs in Pro-Watch systems.
-
LifeSafety Power FPO75: A modular professional power system designed for large-scale security integrations.
