Foxboro Standard 200 Series Power Supply - FPS400-24

Foxboro Standard 200 Series Power Supply - FPS400-24

Overview

The Foxboro™ DCS Standard 200 Series power supplies provide 24 V DC to standard 200 Series baseplates. The Model FPS400-24 is a 400 W power supply that is agency certified for use in Division 2 and Zone 2 applications. Two different input voltage power supplies are offered:

• 120/240 V AC or 125 V DC input (P0922YU) 

• 24 V DC input (P0922YC).

These power supplies are the only power supplies that have been tested and qualified by Foxboro DCS for use with 200 Series Fieldbus Modules (FBMs).

For sites where a lower-powered and/or smaller sized solution than the FPS400-24 power supply is desired, the FPS240-24 and FPS120-24 power supplies are available. They are discussed in 200 Series Power Supplies - FPS240-24 and FPS120-24 (PSS 41H-2FPS).

Features

• Wide range of AC and DC input voltages 

• High efficiency 

• Power factor correction 

• Dual stage current limiting 

• Overvoltage shut down circuitry 

• Transformer isolated 24 V DC output 

• Class 1, DIV 2, Zone 2 applications 

• UL®, UL-C and CENELEC Certifications 

• G3 rating for harsh environments 

• Power for external field devices 

• Convection cooling (no fans) 

• Gasketed and sealed housing 

• Horizontal or vertical DIN rail mounting 

• Holes for bracket or wall mounting 

• Relay (form C) status alarm output

Wide-range Input Voltages

A high-efficiency input circuit automatically accepts either ac or dc input voltages. The 120/240 V AC or 125 V DC input circuit (P0922YU) provides a range of 85 to 265 V AC at 47 to 63 Hz operation (or 108 to 145 V DC) to meet world-wide power requirements.

High Efficiency

The sealed power supply has high efficiency (up to 95% for P0922YU and up to 81% for P0922YC) resulting in high reliability and low failure rates. They have a return-oninvestment (ROI) of less than two years based upon average electrical rates and load

Power for External Field Devices

The actual amount of power required in a standard 200 Series subsystem depends on the number of FBMs/Fieldbus Communication Modules (FCMs)/Field Control Processors (FCPs) being powered, the types of termination assemblies used, and whether internal or external powering is used for the individual field device(s). The FPS400-24 can also be used as a field power supply to power external field devices. However, for system integrity field devices and DIN rail baseplates should not be powered from the same FPS400-24.

Functional Specifications

Input Specifications

120/240 V AC or 125 V DC Power Supply (P0922YU) 

• Input Voltage Range: 85 to 265 V AC or 108 to 145 V DC, 125 V DC nominal

• Input Frequency Range: 47 to 63 Hz • Input Current: 5.6 A at 85 V AC input (RMS maximum) 2.5 A at 230 V AC input (RMS maximum) 

• Efficiency (at Maximum Power, 10A, 24V): 77% minimum at 85 V AC input 85% typical at 120 V AC input 92% typical at 230 V AC input 90% typical at 240 V AC input 

• Inrush Current: 20 A, at 110 V AC (peak at cold start) 40 A, at 220 V ac (peak at cold start) 

• Input Power: 453 W typical at 120 V AC, 50/60 Hz 439 W typical at 230 V AC, 60 Hz 441 W typical at 230 V AC, 50 Hz 24 V DC Power Supply (P0922YC) 

• Input Voltage Range: 18 to 35 V DC, 24 V DC nominal 

• Input Current: 19.5 A at 24 V DC input 

• Efficiency (at Maximum Output Power): 85% typical at 24 V DC input 

• Input Power: 468 W at 24 V DC input typica

Output Specifications

• Output Voltage: 24.0 V DC, ±0.2 V DC nominal factory setting  

• Voltage Line Regulation: 2.0% of Vout 

• Voltage Load Regulation: 2.0% of Vout 

• Ripple and Noise at 20 MHz: 100 mV (peak-to-peak), 10 mV (RMS maximum) 

• Temperature Coefficient: 0.025% per °C 

• Startup Time (Soft-Start): 3 s typical at 110 V AC input or 24 V DC, 5 s maximum 

• Overshoot: No overshoot at turn on, turn off, power failure or removal of short circuit 

• Load Transient Response: 50 to 100% LOAD CHANGE Recovery to within regulation limits within 50 ms Maximum output voltage excursion less than 5%