1756-PB50 Standard DC power supply Open chassis or no chassis

Manufacturer Rockwell Automation
Brand Allen Bradley
Part Number/Catalog Number Model 1756-PB50
Series ControlLogix
Module Type Standard DC power supply
Nom Input voltage 24 volts DC
Input voltage range 18-32 volts DC
Isolation voltage 250 V continuous voltage
The Allen-Bradley 1756-PB50 is a 1756 ControlLogix DC power supply. The ControlLogix system consists of a single controller in a chassis and various I/O modules.

The 1756-PB50 module has an input voltage range of 18-32V DC and a nominal input voltage of 24V DC. It has a maximum input power of 50W at 85 degrees. Celsius (122 degrees Fahrenheit), 60 watts at 70 degrees. Degrees Celsius (140 degrees Fahrenheit), the maximum output power is 60 W at 0-50 degrees. Celsius (32-122 degrees Fahrenheit), 50 W at 0-60 degrees. Degrees Celsius (32-140 degrees Fahrenheit). It has a current capacity of 1.5A at 1.2V DC, 2A at 3.3V DC, 8A (50C) and 6A (60C) at 5.1V DC, and 2.0A (60C) at 24V DC. It measures 5.51 x 3.07 x 5.71 inches. It weighs 1.7 pounds. It has a 250V (continuous) isolation voltage and a maximum surge current of 30A. It is installed in the left slot of the 1756 ControlLogix case and comes with an open case or no case. It is compatible with the 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17 (A, B, and C series) chassis. For wiring, 2.5 mm square (14 AWG) solid or stranded copper wire rated at 90 degrees. Use degrees Celsius (194 degrees Fahrenheit) or higher for maximum insulation of 1.2 mm (3/64 inch).

The 1756-PB50 power supply is suitable for 0-60 degree industrial environments. C (32-140 F) operating temperature, 30g operating shock and 5-95% non-condensing relative humidity.

The output current capacity of 1756-PB50 at 1.2V is 1.5A; 2A at 3.3V; 8 A@ 50 °C (122 °F) 6 A@ 60 °C (140 °F) (5.1V) and 2.5 A@ 50 °C (122 °F) 2.0 A@ 60 °C (140 °F) (24V).

This power supply is installed outside the rack in the leftmost position, so it does not occupy a slot in the ControlLogix chassis. It is assigned a specific installation location, and unlike the 1756 module, this module cannot be installed into any available slots.

The 1756-PB50 is compatible with the 1756 chassis belonging to the A, B, and C series. The power supply is compatible with any ControlLogix chassis as well as any type of module, especially I/O, communication, dedicated, and inclusive partner modules.

The power supply has a hold time function. This function refers to the ability of the power supply to continue working when the input voltage power supply is below the minimum power supply level. The hold time varies depending on the power load, specifically 30 ms at 18 to 32V DC, 60 W load, and 40 ms at 18 to 32V DC, 50 W load.