Description

Allen Bradley designed and produced the 1794-PS3 power supply module. This device is used to power the FLEX I/O series modules and adapters. It operates at 50 to 60 hertz and has a nominal supply voltage of 120 volts with 1.7 amperes of current and 230 volts with 1.1 amperes of current. The power supply has 3.2 amperes of overcurrent protection and can power up to ten FLEX I/O adapters.

• Power dissipation, max: 12 W
• Overcurrent protection: 3.2 A
• Output surge: Sufficient to drive 10 adapters
• Output power: 72 Watts
• Maximum input current: 1.9 A
• Nominal input voltage: 120V AC, 50/60 Hz; 1.7 A max. 230V AC, 50/60 Hz; 1.1 A max.
• Input Frequency range: 47-63 Hz
• Input Voltage range: 85-264VAC
• Product Description: Flex I/O Power Supply
• Product family: Flex I/O system
• Thermal Dissipation 41.0 BTU/hr
• Part Number/Catalog No. 1794-PS3
• Output Current 3 A (horizontal mounting); 2.8 A all other mountings
• Product Type Flex I/O DC Power Supply Module
• Supply Voltage nom. :  230V AC, 47-63Hz, 1.1A max.
• Voltage Range: 85-265V AC
• Input Current 1.9A max.
• Output Voltage nom.: 24V DC
• Output Voltage Range: 20.4-27.6V DC
• Minimum Load: 50mA
• Overvoltage Protection: 35V DC
• Isolation Voltage: 2500V DC

Part number 1794-PS3 was designed and manufactured by Allen Bradley / Rockwell Automation. This product is a power supply module and it is a part of the FLEX I/O family of distributed I/O modules. This module provides backplane power to modules inserted in FLEX I/O assemblies. This module has a nominal supply voltage rating of 120 volts AC at 50 to 60 hertz, with an input current rating of 1.7 amperes. The nominal supply voltage rating of this device is 230 volts AC at 50 to 60 hertz, with an input current rating of 1.1 amperes. The supply voltage range is 85 to 264 volts alternating current at 47 to 63 hertz. The input current is limited to 1.9 amperes, while the power supply can manage an inrush current of up to 40 amperes at 265 volts alternating current (AC). The power supply hold-up time is one of the 1794-PS3’s features. Even if the module’s input power dips for a half-cycle at 47 hertz and 85 volts AC, the power supply will be able to keep output within required limits at full load. The power output is rated as 72 watts.

The 1794-PS3 can accommodate up to ten FLEX I/O adapters. The overcurrent protection rating is 3.2 amperes. The rated power dissipation is 12 watts, while the thermal dissipation is 41 BTU/hr. This power supply’s maximum output current is determined by the mounting. It has a 3-ampere output current when installed horizontally and a 2.8-ampere output current in other configurations. The 1794-PS3 has dimensions of 3.7 inches x 2.7 inches x 3.4 inches.