Rockwell Automation 1756-PH75 ControlLogix Power Supply

Rockwell Automation 1756-PH75 ControlLogix Power Supply

Availability: 99 left in stock

Rockwell Automation 1756-PH75 ControlLogix Power Supply Configured for power distribution in ControlLogix chassis architectures, the Rockwell Automation 1756-PH75 (1756-PH75 Power Supply) provides direct...

SKU: 1756-PH75

Manufacturer: Allen Bradley
Product No.: 1756-PH75
Product Type: Power Supply Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 1130g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Rockwell Automation 1756-PH75 ControlLogix Power Supply

Configured for power distribution in ControlLogix chassis architectures, the Rockwell Automation 1756-PH75 (1756-PH75 Power Supply) provides direct physical DC voltage conversion and regulation for backplane-mounted modules within the network platform.

Hardware Specifications

Parameter	Specification
Model	1756-PH75
Brand	Rockwell Automation
Origin	USA
Weight	1.13 kg
Dimensions	145 x 112 x 145 mm
Operating Temp	0 deg C to 60 deg C
Power Consumption	Not specified
Input Voltage	125 V DC
Output Power	75 W

Industrial Control and Network Architecture

The 1756-PH75 is designed for integration into ControlLogix chassis backplanes, supplying deterministic power to CPU, I/O, and communication modules. The module utilizes internal current limiting and overvoltage protection to ensure system stability during power-up sequences or localized short-circuit events. To facilitate deterministic network performance, the power supply maintains tight voltage regulation across the backplane bus communication velocity, mitigating potential bit-error rates caused by unstable voltage ripples. The module is fully compatible with ControlLogix firmware flash updates, allowing for status monitoring via the primary controller backplane diagnostic logs.

Frequently Asked Questions (FAQ)

Q: Is the 1756-PH75 module capable of hot-swapping during system operation?

A: Yes. The power supply supports insertion and removal while the chassis backplane is powered. However, ensure that redundant power configurations are verified before removing an active unit to prevent loss of control to the I/O modules.

Q: How does the power supply handle backplane bus communication velocity and loading?

A: The module is rated to provide a specific wattage (75 W) to the backplane. Exceeding this power budget, or placing too many high-draw communication/motion modules in a single chassis, can lead to voltage sagging and loss of deterministic timing on the backplane bus.

Field Installation Guidelines

Chassis Mounting: Align the module with the dedicated power supply slot on the left side of the ControlLogix chassis. Ensure the guide pins are seated and the locking lever is engaged to provide mechanical stability and electrical contact with the backplane connector.
Grounding: Secure the chassis to a verified protective earth ground. Use a low-impedance copper strap to connect the chassis ground lug to the cabinet grounding bus to satisfy surge protection and EMI/RFI shielding requirements.
Input Wiring: Connect the 125 V DC power source using appropriately sized conductors based on the local electrical code. Ensure the wiring is routed through isolated cable trays to prevent inductive noise injection into the low-voltage communication modules.
Thermal Management: Maintain at least 50 mm of clearance above and below the power supply module to facilitate natural convection cooling, ensuring ambient air intake remains between 0 deg C and 60 deg C.

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