FOXBORO FPS400-24

Description

The I/A Series® system FPS400-24 DIN rail mounted power supply provides 24 V dc to the DIN Rail
Mounted Subsystem baseplates at 400 W.
FEATURES:
 Wide range of ac and dc input voltages
 Extremely 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.
OVERVIEW
The I/A Series® system DIN rail mounted power
supplies provide 24 V dc to DIN rail mounted
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 as follows:
 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 Invensys for
use with 200 Series 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 DIN Rail
Mounted Power Supplies – FPS240-24 and
FPS120-24 (PSS 21H-2W7 B4).
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.
The 24 V dc power supply input circuit (P0922YC)
accepts a range of 18 V dc to 35 V dc.
HIGH EFFICIENCY
The sealed power supply has exceptional efficiency
(up to 95% for P0922YU and up to 81% for
P0922YC) resulting in high reliability and low failure
rates. They have a return-on-investment (ROI) of less
than two years based upon average electrical rates
and load.
POWER FACTOR CORRECTION CIRCUITRY
The advanced design for ac inputs (P0922YU)
provides an active sinusoidal current profile for nearunity controlled power factor.
CURRENT LIMITING
The power supply operates as a constant voltage
source with maximum load ratings as listed in the
specifications. If load current attempts to exceed
greater than 110% of maximum current at the rated
25C load, the output voltage begins to decrease
toward zero, thereby limiting the current delivered to
the load. Upon removal of overload, normal operation
resumes.
OVERVOLTAGE SHUTDOWN
Automatic shutdown occurs if operating conditions
cause excessive output voltage. After the occurrence
of an overvoltage shutdown, input power must be
interrupted to re-establish the output. After the cause
of the shutdown has been removed, the shutdown
circuit resets in less than 30 seconds after the
removal of input power.
DIVISION 2, ZONE 2 APPLICATION
The power supplies are UL and UL-C listed (to
UL 1950) as having a Safety Extra Low Voltage
(SELV) and can be used in Division 2 and Zone 2
applications.
POWER FOR EXTERNAL FIELD DEVICES
The actual amount of power required in a DIN rail
mounted subsystem depends on the number of
Fieldbus Modules (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.