Firebeam EN54 24Vdc 1.5A Power Supply
£172.80 (inc VAT: £207.36)
Summary
The PSUFB24 is a boxed mains input to regulated DC power supply unit, providing 1.5A at 24VDC nominal output, specifically designed for use with fire and security systems. This versatile unit combines the functions of a PSU, battery charging unit and battery monitoring system in a single compact enclosure.
Fully compliant with EN 54-4 (Fire detection and fire alarm systems – Power supply equipment) and EN 50131-6 (Alarm systems – Intrusion and hold-up systems – Power supplies), the PSUFB24 has been tested to comply both electrically and environmentally with EN 50131-6 (Type A – Grade 2 – Environmental Class II). The unit conforms to the relevant EU Directives and is a BRE approved product, with approvals pending for AFNOR and VdS European notified bodies.
The PSUFB24 features comprehensive battery fault monitoring capabilities in accordance with EN 54-4, with eight distinct fault indicators including mains failure detection, battery voltage monitoring, and output over voltage protection. The unit provides a fault relay output for integration with fire and security control panels, ensuring reliable system monitoring and operation.
Features
- Regulated 24VDC output at 1.5A continuous current (including charging)
- Mains supply voltage 230V AC, 50/60Hz with rated current of 0.4A RMS
- Battery charging capacity up to 2 x 3.2Ah with float charge voltage compensation
- EN 54-4 and EN 50131-6 compliant for fire and security applications
- Comprehensive battery fault monitoring with eight distinct fault indicators
- Fault relay output for integration with fire and security control panels
- Maximum internal battery resistance monitoring (1500mΩ or 1200mΩ thresholds)
- Output ripple voltage peak-to-peak less than 400mV
- DIP switch configuration for battery status and charge rate adjustment
- Front panel LED indicators for supply status and fault conditions
- Separate battery and mains fuses for protection (F1: T1A H 230V, F2: 3A MINI)
- Temperature compensated charging (-36mV/°C at 20°C)
- Isolated changeover relay output rated 1A at 30VDC
- Display and data connector for system monitoring
- Battery charge inhibit input/output connections
- IP30 rated enclosure suitable for indoor installation
- Dimensions: 380mm (W) x 235mm (H) x 96mm (D)
- Class 1 permanently connected equipment requiring earthing
FAQ
What standards does the PSUFB24 comply with?
The PSUFB24 is fully compliant with EN 54-4 (Fire detection and fire alarm systems – Power supply equipment) and EN 50131-6 (Alarm systems – Intrusion and hold-up systems – Power supplies). It has been tested to comply both electrically and environmentally with EN 50131-6 Type A – Grade 2 – Environmental Class II standards.
What battery sizes can be connected to the PSUFB24?
The PSUFB24 supports maximum approved VRLA battery sizes of up to 2 x 3.2Ah. The unit provides automatic battery charging with temperature compensation and can charge batteries to 80% capacity in 24 hours.
What does the fault relay monitor?
The fault relay monitors eight distinct fault conditions including mains failure, fault condition in PSU (high DC load current), battery voltage issues, battery thermistor critical status, charger failure, charge fault (battery actively charging or in float charge), no batteries fitted, battery resistance fault, and output over voltage.
Can the PSUFB24 be installed outdoors?
No, the PSUFB24 has an IP30 rating and is designed for indoor use only. The enclosure must be installed indoors, positioned to avoid accidental damage, and must not be subjected to dust, conductive or corrosive gases or liquids, nor temperatures, input voltages and electrical loads outside the stated operating range.
What are the output voltage specifications?
The PSUFB24 provides a minimum power output voltage of 20V ± 2% with mains on, and 21V ± 2% with mains off. The output ripple voltage (peak-to-peak) is less than 400mV over the full input and output range of the PSU. The final output voltage is 21V with a maximum of 1.5A when charging is turned off.
Who can install and maintain the PSUFB24?
The PSUFB24 must be installed and maintained by a suitably skilled and technically competent person. It is a piece of Class 1 permanently connected equipment and must be properly earthed. The unit must not be operated unless all components are securely installed in its enclosure.
What are the DIP switch functions?
The unit features four DIP switches with the following defaults: Switch 1 (no function), Switch 2 (OFF for higher battery resistance threshold 1500mΩ or ON for lower 1200mΩ), Switch 3 (OFF for lower battery charge rate 0.2A or ON for higher rate 0.7A), and Switch 4 (OFF for battery fitted, ON for battery not fitted).
Specifications
- Model: PSUFB24 (24VDC, 1.5A)
- Mains Supply Voltage (AC): 230V AC, 50/60Hz
- Rated Current: 0.4A RMS
- Maximum Continuous Output Current (Including Charging): 1.5A
- Maximum Approved VRLA Battery Size: Up to 2 x 3.2Ah
- Battery Charge Capacity (C): 2Ah up to 12Ah (battery charged to 80% of capacity in 24hrs)
- Battery Characteristics Final Voltage: 21V
- Float Charge Voltage: 27.2V ± 1% at 20°C
- Battery Temperature Compensation: -36mV/°K
- Maximum Battery Charge Current: 1.3A if DIP Switch 3 OFF (Down), or 0.8A if DIP Switch 3 ON (Up)
- Maximum Current During Charging: Taking a load current greater than ‘I’max a’ will temporarily disable the battery charging. ‘I’max b’ = 1.5A, charging turned off via CONN6. ‘I’min’ = 0mA
- Maximum Internal Battery Resistance ‘Ri’max’: 1500mΩ if DIP Switch 2 OFF (Down), 1200mΩ if DIP Switch 2 ON (Up)
- Maximum Power Output Voltage ‘V’max’: 30V
- Minimum Power Output Voltage ‘V’min’: 20V ± 2% with Mains On, 21V ± 2% with Mains Off
- Output Ripple Voltage (Peak-To-Peak): <400mV over the full input and output range of the PSU
- Mains Fuse (F1): T1A H 230V, 20mm ceramic (T = Time Delay; H = High Breaking Capacity)
- Battery Fuse (F2): 3A MINI® automotive blade fuse
- Mains Input (CONN1): Mains supply input terminals: Live, Neutral & Earth. 1mm² to 2.5mm² cable size
- Supply Output (CONN5): Output for auxiliary equipment. 1mm² cable size, <30m cable length (screened cable must be used)
- Battery Connector (CONN5): Connection to the VRLA batteries. 1mm² cable size
- Fault Relay (CONN4): Isolated changeover relay output, rated 1A at 30VDC. 1mm² cable size, <30m cable length (screened cable must be used)
- Battery Inhibit (CONN6): Connect to 0V to inhibit battery charger. 1mm² cable size
- Con Input / Output (CONN6): Not used
- PL2: Display connector
- PL3: Battery Thermistor Connector (Not used)
- Front Panel LED Indicators (Green): The Supply Output (CONN5) is healthy and within range
- Front Panel LED Indicators (Amber): A fault is present on the PSU (see PSU Status LED)
- Power Supply PCB LEDs (Amber): A fault with an auxiliary unit (user-definable), 19 to 30V, 3.5 to 7mA
- Power Supply PCB LEDs (Red): Hazardous Voltages Present (Red LED); PSU Status (Amber LED)
- Dimensions: 380mm (W) x 235mm (H) x 96mm (D)
- Weight / Construction: 1.55kg (without battery) / Plastic lid and base
- Enclosure Finish: RAL7035 textured
- Operating Temperature Range: -10°C to +40°C
- Maximum Humidity: 95% non condensing
- IP Rating: IP30 rating (to EN 60529)
- Environmental Class: Designed for indoor use only, operating within temperature range -5°C to +40°C (up to EN 60529)
- Standards Compliance: EN 54-4, EN 50131-6
- CPR Certification Number: 0832-CPR-E2284
- DoP Number: DOP0000061
- VdS Approval Number: G2nnnnn
- LPCB Certificate Number: 176p
- AFNOR Approval Number: TBA
- Declaration Of Performance: EN54-1:1997 + A1:2002 + A2:2006
Downloads
- Datasheet (Adobe PDF)
Additional information
| Weight | 5 kg |
|---|---|
| Device Type | |
| Output | 1.5A |