CTEC BF562-5 - 24V 5A EN54 Switch Mode Power Supply
Powerful 24V 5A Switch Mode / Digital Hybrid PSU (EN54-4/A2)
The CTEC BF562-5 is a powerful 24V 5A switch mode / digital hybrid PSU that can be customised to suit your exact requirements. A protective plastic cover on the PSU PCB guards against touching live parts. The unit includes a single-pole volt-free changeover relay that switches for any fault condition, supporting professional fire alarm installations and critical auxiliary loads.
Clear Status Indication, Configurable Charging & Reliable Monitoring
Multiple indicators provide fast diagnostics: supply present, general fault, fault type and auxiliary equipment fault. Two selectable battery charge currents are available, and battery fault impedance limits can be optimised to suit load current (helping extend battery life). BF562-5 also supports a mains fail simulation mode and includes an improved on-board temperature sensor, with optional remote sensor support.
Security-Grade Electronic Functions
Electronic functions comply with EN50131-6 grades 1-4 for security applications. An encased version (BF562-5/E) is also available.
General Features
- Certified to EN54-4/A2 by the LPCB and VdS
- Two selectable battery charge currents
- Mains fail simulation mode
- Improved on-board temperature sensor with optional remote sensor
- Electronic functions comply with EN50131-6 grades 1-4 for security applications
- Fault relay output (single-pole volt-free changeover) for any fault condition
Typical Uses
Ideal for powering beam detectors, auto-dial communicators, aspirating smoke detectors, auto-open vent systems, auxiliary sounder systems, or any other device performing a mandatory function of a fire alarm system.
PSU Customisation
The BF562-5 can be customised to suit your exact requirements using a BF423 configurator and PC. Configurable parameters include float voltage temperature compensation, battery charge rate (mA), battery impedance, and configurable input/output settings.
PSU Status LED (Located on the PSU PCB)
- 1 flash = Mains Failure
- 2 flashes = Battery Voltage Low
- 3 flashes = Battery Voltage Critical
- 4 flashes = Charger Failure
- 5 flashes = Charger OK (Battery is either actively charging, or in float charge)
- 6 flashes = No Batteries Fitted (indicating DIP Switch 4 position)
- 7 flashes = Battery Resistance Fault (Level set by DIP Switch 2 position)
- 8 flashes = Output Over Voltage
Battery Fault Monitoring
The BF562-5 complies with EN54-4/A2 and therefore must monitor battery resistance. The fault threshold is directly related to the ability of the battery to deliver the rated current to the load. For example, batteries stored uncharged for long periods, during shipment and/or distribution, degrade leading to increased internal resistance. If a degraded battery is fitted, a fault will be shown by the PSU as mandated by EN54-4/A2.
Technical Specifications
| Model, Description : | CTEC BF562-5 - 24V 5A Switch Mode / Digital Hybrid PSU |
|---|---|
| Approval / Certification : | Certified to EN54-4/A2 by the LPCB & VdS. |
| Application & Operation : | A boxed mains to regulated DC power supply providing 5A @ 24V DC. Fully compliant with EN54-4, it includes a single pole volt-free changeover relay that switches for any fault condition. |
| Mains Supply : | 230V 50/60Hz. |
| Mains Rated Current : | 1.3A maximum (310 VA). |
| Total Output Current Limited To : | 5A (Max. continuous output current). |
| Output : | I max.a: 4.6A or 4A selectable. A load greater than I max.a will temporarily disable battery charging. I max.b: 5A, charging turned off via CONN6. Output is also customisable via a BF423 Configurator*. |
| Battery Charge Capacity : | 4 Ah to 17 Ah. Output is customisable via a BF423 Configurator to suit different manufacturers' batteries*. |
| Max Battery Size and Type : | 7Ah - 17Ah. |
| Indicators : | 3 external - Supply Present (Green); General Fault (Amber); Auxiliary Fault (Amber) and 2 internal - Hazardous Voltages Present (Red) and PSU Status (Amber). |
| Connections : | Mains Input (CONN1); Supply Output (CONN3); Battery Input (CONN3); Fault Relay (CONN4); Charge Off Input (CONN5). Battery Charge Current Link (PLK1); Battery Monitoring On/Off Link (PLK2); High Temp. Output (PL2). |
| Expansion Connections : | A remote thermistor can be connected via PL3 terminals. |
| Product Dimensions : | 404 W x 404 H x 110 D mm. |
| Construction & Finish : | Metal lid and base; RAL7035 textured. |
| IP Rating : | IP30 (designed for indoor use only). |
| Weight : | 5kg (without batteries). |
| Operating Conditions & Temperature : | -5ºC to +40ºC. Max relative humidity: 95%. |
