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Configurable AC input and selectable DC output voltages for versatile operation.
Efficient power conversion and optimized charging for various battery types.
Robust protection against power fluctuations, faults, and component damage.
Provides status monitoring via relays and LEDs, with UL listing for security applications.
Details AC power input requirements and voltage selection procedures.
Covers DC output voltage, load regulation, and battery charging specifications.
Provides physical specifications and relevant UL certifications for the device.
Step-by-step guide for annual testing of power supply and battery functionality.
Table showing estimated battery standby time for various loads and battery capacities.
Details the lifetime replacement, no-fault warranty for the AQD6 series.
The Securitron AQD6 Series is a line of heavy-duty, self-contained, and efficient offline switching power supplies designed to provide clean, linear-type performance. These units are jumper selectable to deliver either 12 VDC at 6A or 24 VDC at 6A, making them versatile for various applications. A key feature is their dedicated lead-acid battery charger, which is engineered to maximize battery life while ensuring an uninterruptible 12 VDC or 24 VDC power supply for access control security systems. This capability ensures continuous operation even during AC power failures, with no drop or switchover in power.
One of the significant usage features of the AQD6 Series is its field-selectable AC input, allowing it to be powered anywhere in the world by either 120 VAC or 240 VAC. The device demonstrates exceptional resilience with its brownout capability, operating effectively even when the nominal voltage drops to 85%. It also tolerates overvoltage input within ±15% of the nominal voltage. The power supplies boast high efficiency, reaching 90% at 25V output under full load, which contributes to energy savings and reduced heat generation.
The AQD6 Series incorporates a comprehensive filtering system that ensures linear output performance, crucial for sensitive electronic equipment. For enhanced safety and reliability, the units are electronically protected against battery reversal, shorting, and overloading. Models such as AQD6-8F, AQD6-8C, AQD6-16F, AQD6-16C, AQD6-8F8R, and AQD6-8C1R offer power-limited output with thermal protection, while the base AQD6 model is non-power limited. All these protective features are designed to self-restore automatically, minimizing downtime and maintenance intervention.
The device is equipped with several indicators and relay contacts for status monitoring. An amber LED indicates normal power operation. There are also sets of Form "C" relay contacts that signal AC power status and low battery conditions. The low battery trouble indication activates when 50-75% of battery capacity remains, allowing ample time for intervention. The DC output is Class II power limited, further enhancing safety.
For maintenance, the power supply and standby battery(s) should be tested at least once a year. This involves checking the LEDs for their normal states: a green LED for AC ON, a green LED for Trouble Normal ON, and a red LED for DC ON. The AC indicator LED, when off with AC at the terminals, suggests a blown fuse link, which would require returning the unit to the factory for repair. It's also important to check the output voltage with a normal load to ensure proper voltage for float charging the batteries. For a 12V setting, the voltage should read between 13.6 VDC and 13.8 VDC, and for a 24V setting, between 27.1 VDC and 27.6 VDC.
During maintenance, the AC input should be disconnected, which should turn off the AC LED while all other LEDs remain normal. The DC output should be checked to be above 12.0 VDC for a 12V setting and 24.0 VDC for a 24V setting, confirming the operational status of the standby batteries. After these checks, AC power should be reapplied, and the AC LED should be verified as ON.
The battery charger is precisely set for float charging 12V or 24V sealed or wet lead-acid batteries. A 12-inch battery cable assembly is provided for easy connection. The maximum charge current is 0.7A, with an average recharging current of 250mA. The battery circuit includes a PTC self-resetting circuit breaker and reverse hookup protection. To estimate recharge time for depleted batteries, the AH rating is multiplied by 4 (AH x 4). For example, a 12V system with two depleted 12V, 7 AH batteries would take approximately 28 hours to recharge.
The AQD6 Series is UL Listed for Access Control & Burglar Alarm systems and includes additional supervisory features such as a battery disconnect relay that activates when batteries are depleted. The product is manufactured in the USA and comes with a lifetime warranty, reflecting its robust design and quality construction. Before connecting any load and battery(s), the 12V/24V jumper must be moved to the desired voltage. It is crucial to configure the power supply board for the proper voltage before applying line voltage to prevent damage. Once the link is cut to convert to 240 VAC, there is no conversion back to 120 VAC. When switching the DC output voltage selector jumper, both the DC load and battery(s) connections must be removed to prevent damage. To avoid sparks, AC must be applied before connecting the battery cable to the battery.
General| Output Current | 6 A |
|---|---|
| Number of Outputs | 1 |
| Output Voltage | 12 VDC or 24 VDC |
| Operating Temperature | 0°C to 49°C (32°F to 120°F) |
| Housing | Steel |
| Certifications | UL |
