Schneider Electric Foxboro ™ DCS FPS480-24 Compact Power Supply

Schneider Electric Foxboro ™  DCS FPS480-24 Compact Power Supply

Product positioning and core applications

Foxboro ™  DCS FPS480-24 is a 480W compact DC power supply launched by Schneider Electric, belonging to the Foxboro DCS system supporting equipment under the EcoStruxure architecture. Its core function is to provide stable 24V DC power supply for DCS system loads (such as FCP280 controller, Compact/Standard 200 series I/O subsystem equipment), and can also be expanded to power external field devices. Its design is compatible with K13 system enclosures and K14 system and terminal enclosures, supports customized configurations (meeting power consumption and wattage requirements), and has passed ATEX, UL, UL-C certifications. It can be used in Class 1, Division 2 (North America), and Zone 2 (International) hazardous areas, especially suitable for DCS system power supply needs in harsh industrial environments.

Core Features and Advantages

（1） Wide range input and high efficiency

Flexible input adaptation: automatically compatible with alternating current (AC) and direct current (DC) inputs, with an AC input range of 85-264V AC (47-63Hz, single-phase) and a DC input range of 120-264V DC (output reduced to 90% when 108-119V DC), meeting the voltage standards of power grids in different regions around the world without the need for additional transformers.

High efficiency and energy saving: With an efficiency of up to 94% (at 230V AC input), low energy consumption reduces operating costs. Based on average electricity prices and load calculations, the return on investment (ROI) can be less than 2 years; Built in power factor correction (PFC) circuit, with a power factor close to 1 when AC input (0.98 at 115V AC and 0.92 at 230V AC), reducing harmonic interference in the power grid.

（2） Security protection and reliability

Multiple protection mechanisms

Overcurrent protection: dual stage current limitation, automatically shuts down when the load current exceeds 105% of the rated value (at 25 ° C) for more than 4 seconds; The typical value of short-circuit current is 48A, and the output constant current setting value is about 32.5A to avoid short circuit damage to the equipment.

Overvoltage protection: When the output voltage is abnormally high, it will automatically shut down. The input power supply needs to be disconnected (within 30 seconds) to reset, and the power supply will be restored after troubleshooting.

Isolation and Insulation: The insulation resistance between input-output, output casing, and input-output casing is greater than 100M Ω (tested at 500V DC), and the insulation strength meets industrial safety standards to prevent leakage risks.

Environmental adaptability: The shell is coated with a conformal coating to prevent corrosion; The protection level and environmental tolerance meet the G3 level harsh environment standard, supporting working temperatures of -25~70 ° C (load linearly reduced to 75% at 60-70 ° C), relative humidity of 5-95% (no condensation), altitude of -300~3000m (storage altitude up to 12000m), no need for fans, and reducing mechanical failure points through natural convection heat dissipation.

（3） Compliance in hazardous areas

Complete certification: UL/UL-C certification (compliant with UL60950-1 and UL508 standards), ATEX certification (Ex nA IIC T3), IECEx certification, can be used in Class 1, Division 2 (Groups A-D), Zone 2 (IIC explosion group) hazardous areas, as an "associated device" to power non flammable communication circuits (requires coordination with designated processor modules, refer to the DIN Rail Installation Subsystem User Guide).

Technical specifications

（1） Input and output parameters

Category specification details

Input specifications - AC input: 85-264V AC (47-63Hz, single-phase), input current 4.5A at 115V AC, 2.3A at 230V AC

-DC input: 120-264V DC (108-119V DC with 90% derating), input current 4.5A

-Starting voltage: typical value 71.6V AC, shutdown voltage: typical value 66.7 V AC

Output specification - Output voltage: 24.0V DC (factory set ± 0.2V DC)

-Voltage regulation rate: Line regulation rate 96mV, load regulation rate 240mV

-Output current: rated 20A (480W), maintained at 20A at 60 ° C, reduced to 15A (360W) at 70 ° C

-Ripple and noise: typical value of 240mVpp, maximum value of 600mV (at -25~0 ° C)

-Temperature coefficient:<0.02%/° C

-Soft start time:<1 second (115V AC input)

-Holding time: 14ms (full power, 115/230V AC input)

（2） Physical and installation specifications

Installation method: Horizontal DIN rail installation (standard DIN rail bracket and fixture), detachable bracket supports panel installation.

Dimensions and Weight: The nominal dimensions are approximately 123mm (length) x 88mm (width) x 82mm (height), with a net weight of 1.3kg (2.87lb) and a gross weight of 1.45kg (3.2lb). The compact design saves cabinet space.

Connection method: M3 screw terminal connection, input and output cables need to be provided by the user. It is recommended to use 14AWG (high current circuit) or 18AWG (low current circuit) wires.

（3） Status monitoring and alarm

LED indication: Green "DC OK" LED indicates output voltage>19.2V (normal operation); The red "Peak" LED indicates that the output voltage is less than 80% of the rated value (under voltage or overload).

Relay alarm: The "DC OK" normally closed (NC) relay contacts close when the output voltage is greater than 80% of the rated value, and disconnect when it is less than 80% (such as short circuit, overload, or no input power). External alarm can be triggered by external modules such as FBM207b. The rated load of the relay contacts is 30V DC/1A, 110V DC/0.3A, 125V AC/0.5A, with insulation strength of 1000V AC (between contacts) and 1500V AC (between coils and contacts).

Environment and Compliance

（1） Environmental tolerance

Environmental indicators, operating range, storage range

Temperature -25~70 ° C (-13~158 ° F), linear load derating at 60-70 ° C -40~70 ° C (-40~158 ° F)

Relative humidity 5-95% (no condensation) 5-95% (no condensation)

Altitude -300~3000m (-1000~10000ft) -300~12000m (-1000~40000ft)

Vibration<19.6m/s ² (2G)-

（2） Electromagnetic Compatibility (EMC) and Safety Certification

EMC compliance: Compliant with IEC/EN 60950, UL60950-1, UL508, Semi F47 (only 200V AC) and other standards, with conducted emission (EN55022-B/CISPR22-B), radiated emission (EN55022-B/CISPR22-B), harmonic current (IEC61000-3-2 Class A) and other indicators meeting standards. Anti interference capabilities include: 8kV contact discharge/15kV air discharge (ESD), 2kV electrical fast transient (EFT), 2kV line to ground/4kV line to neutral lightning surge, 10V conducted RF common mode interference, etc.

Safety certification: UL file number E45026, CSA file number LR35579; ATEX certification (Ex nA IIC T3), CENELEC certification, meeting the requirements for use in hazardous areas; California Proposition 65 Warning: Products containing lead and lead compounds may cause cancer or reproductive harm. For more information, please refer to www.p65warnings. ca.gov.

Accessories and Connection Configuration

（1） Core accessory model

Accessory name, model, and purpose

The RH101CR core power supply unit of the power host provides 24V DC/20A output

AC input terminal block cable -1 cable is required to connect the terminal block to the power host

Connect the power supply to the Compact/Standard 200 series motherboard using RH100DY (3.7m), RH100DZ (0.6m), and RH100EA (1.0m) cables, with 14AWG supporting 20A current

DC distribution component RH101BY is used for multi board connection to achieve power distribution

Bottom board power cable (distribution component to bottom board) RH100EB (2.1m), RH100EC (3.0m) 18AWG, directly connecting the distribution component to the bottom board, supporting up to 2 bottom board direct connections

（2） Connection precautions

If only 1-2 base plates are connected, RH100EB/RH100EC cables can be directly used; If more than 2 baseboards are connected, power must be distributed through the RH101BY distribution component to avoid current overload.

It is recommended to use an independent power supply for external on-site equipment to avoid non system loads affecting the stability of DCS system power supply; All wiring must be fastened with M3 screw terminals to ensure reliable contact.

Key points for use and maintenance

Calibration requirements: The power supply is pre-set with a 24.0V DC output at the factory, which does not require user calibration or voltage adjustment, reducing maintenance workload.

Fault handling: After shutting down due to overvoltage/overcurrent, the input power supply should be disconnected first (within 30 seconds), and load faults (such as short circuits and overloads) should be checked before powering on again to restore power; When the "DC OK" relay is disconnected, it is necessary to check whether the output voltage is less than 80% of the rated value (19.2V DC), and troubleshoot input power supply, load, or internal power supply faults.

Installation spacing: To ensure natural convection heat dissipation, a ventilation gap of at least 76.2mm (3.0in) should be reserved around the power supply to avoid installation in close proximity to heating equipment.