1756-PB75R | Allen-Bradley ControlLogix Rack Mount Redundant Power Supply

Description 

The Allen-Bradley 1756-PB75R is a Redundant Power Supply module that is used with the 1756 ControlLogix Programmable Automation Controller (PLC) range. This module operates at an input supply voltage range of 18-32 Volts DC with a nominal voltage of 24 Volts DC. It has an output power of 75 Watts @ 0…60 °C (32…140 °F) with a current capacity of 1.5 Amperes @ 1.2 Volts; 4 Amperes @ 3.3 Volts; 13 Amperes @ 5.1 Volts, and 2.8 Amperes @ 24 Volts.

Technical Specifications 

Information About 1756-PB75R

The Allen-Bradley 1756-PB75R ControlLogix Redundant Power Supplies has a power input of 24V DC. The 1756-PB75R provides automatic chassis load sharing between excessive power supplies. This power supply has a status indicator to show the state of the visual operation. The Allen-Bradley 1756-PB75R has an operating temperature of 0-60 °C (32-140 °F). The nonoperating temperature of this unit is -40-85 °C (-40-185 °F). The relative operating humidity of the 1756-PB75R is 5-95% noncondensing. The operational vibration of this power supply is 2 G at 10-500 Hz. The operating shock and the nonoperating shock of this power supply are 30 G and 50 G respectively. The dimensions of the 1756-PB75R are approximately 140 x 112 x 145 mm (5.51 x 4.41 x 5.71 inches). The weight of this power supply is around 0.95 kg (2.10 lb). The Allen-Bradley 1756-PB75R uses the 1756-CPR2 cable to connect the redundant power supply to the 1756-PSCA2 chassis adapter. If you connect or disconnect the 1756-CPR2 cable when the backplane’s power source is on, an electrical arc may occur. This can cause an explosion in a hazardous location. Repeated electrical retractors cause excessive wear on the contacts on the module and on its mating connector. The voltage input connections of this power supply are auto-sensing. You can replace a redundant power supply with another supply while operating the 1756-PB75R in nonredundant mode.

The Allen-Bradley 1756-PB75R is a ControlLogix Redundant power supply. This power supply is specifically used to lower the risk of system downtime due to power supply error as this power supply unit when paired to a redundant partner forms a hot-standby assembly wherein one unit acts as stand-by and one unit acts as active power source. A unit automatically takes over in the event of module error.

The 1756-PB75R operates when supplied with an input voltage range of 18-32 Volts DC, a nominal supply of 24 Volts DC, and a maximum input power of 110 Watts. This power supply has output power of 75 Watts @ 0…60 °C (32…140 °F) and current capacities of 1.5 Amperes @ 1.2 Volts; 4 Amperes @ 3.3 Volts; 13 Amperes @ 5.1 Volts; and 2.8 Amperes @ 24 Volts. This module has an inrush current rating of 30 Amperes, maximum. One major feature of this power supply module is the hold-up time duration of 20 milliseconds.

Additionally, the 1756-PA75R has annunciator power of 90 Volts DC for ATEX/IECEx. It also has an isolation voltage rated 250 Volts (continuous), Reinforced Insulation Type, Power Input to Backplane, Power Input to Annunciator, and Annunciator to Backplane Type tested at 3250 Volts DC for 60 seconds.

The 1756-PA75R redundant power supply is compatible for installation in 1756 chassis such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17. For input supply wiring, applicable cable for use is 2.5 mm2 (14 AWG) solid or stranded copper wire with insulation rating of 90 °C (194 °F), or greater, with maximum insulation thickness of 1.2 millimeters (3/64 inches).

Manufacturer information

Allen‑Bradley components, integrated control and information solutions are built for demanding industrial applications. We integrate control and information across the enterprise to make you as productive as possible.

IQElectro 2 Year Warranty

IQElectro offers a 2-Year Warranty on all our products. This complimentary two-year warranty ensures that every purchase from IQElectro is a secure investment in the future of your company.
Warranty Terms and Conditions

IQElectro is not an authorized distributor.

IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses. Some hardware products may contain software and firmware and may not be legally operated without first obtaining an appropriate license from the manufacturer. IQElectro makes no representation as to whether a product will or will not have software or firmware and, if it does, whether the software or firmware is the revision level that you need for your application. IQElectro also makes no representations as to your ability or right to download or otherwise obtain software or firmware for the product from the Original Manufacturer, its distributors, or any other source. IQElectro also makes no representations as to your right to install any such software or firmware on the product. IQElectro will not obtain or supply software or firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing software or firmware. Customer acknowledges and agrees that IQElectro DOES NOT provide any software, firmware, operating system, or right-to-use licenses with the products it sells. Customers understand and agree that proper software (firmware) licensing, maintenance, and upgrades are subject to the applicable manufacturer's Licensing Agreement or similar document. Disclaimer Policy.