1756-PSCA2 | Allen-Bradley ControlLogix Redundant Power Supply Chassis Adapter Module
1756-PSCA2 | Allen-Bradley ControlLogix Redundant Power Supply Chassis Adapter Module
1756-PSCA2 | Allen-Bradley ControlLogix Redundant Power Supply Chassis Adapter Module
    1756-PSCA2 | Allen-Bradley ControlLogix Redundant Power Supply Chassis Adapter Module
1756-PSCA2 | Allen-Bradley ControlLogix Redundant Power Supply Chassis Adapter Module

1756-PSCA2 | Allen-Bradley ControlLogix Redundant Power Supply Chassis Adapter Module

Part #: 1756-PSCA2 Manufactured by: Allen-Bradley
Regular price
$269.00
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$269.00
Regular price
3 in Stock
Condition: New – Open box
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Product Overview
Allen-Bradley 1756-PSCA2 ControlLogix Redundant Power Supply Chassis Adapter Module, for use with Standard Series B Chassis
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Product Description P/N: 1756-PSCA2

Description / Specifications

Description 

The Allen-Bradley 1756-PSCA2 is a chassis adapter module designed to interface redundant power supplies with a ControlLogix chassis. It routes power from one or two supplies into the backplane, ensuring stable distribution for demanding automation systems. This module is primarily used in applications requiring high availability and power redundancy.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLC Power & Adapter Modules
Part Number 1756-PSCA2
Subcategory ControlLogix Redundant Power Components
Series ControlLogix
Module Type Chassis Adapter Module for Redundant Power Supply
Mounting Position Left side of chassis
Compatible Power Supplies 1756-PA75R, 1756-PB75R
Terminal Blocks 3 RTBs (1756-TBSH or 1756-TBNH)
Backplane Current (24 VDC) 125 mA
Current Capacity (1.2 VDC) 1.5 A
Current Capacity (3.3 VDC) 4 A
Current Capacity (5.1 VDC) 15 A
Current Capacity (24 VDC) 2.8 A
Power Dissipation 25.7 W at 30 °C; 21.3 W at 60 °C
Operating Temperature 0–60 °C (32–140 °F)
Cable Requirement 1756-CPR2 (5-inch minimum bend radius)
Enclosure Type None (open-type device)
Hazardous Location Rating Ex nA IIC T4 Gc
Weight 0.228 kg

 

 

Information About 1756-PSCA2

The 1756-PSCA2 is part of the Allen-Bradley ControlLogix series and is engineered as a passive chassis adapter for redundant power supply configurations. It is designed to work specifically with 1756-PA75R and 1756-PB75R power supplies, providing compatibility across standard ControlLogix installations. The module mounts to the left side of the chassis and uses a 1756-CPR2 cable with defined bend-radius requirements to ensure proper installation. Its design supports hazardous location approvals and meets grounding requirements essential for industrial environments.

Key Features:

  • Redundant Power Integration: Directs power from one or two redundant supply units into a single backplane connection.
  • ControlLogix Compatibility: Works exclusively with 1756-series redundant power supplies such as the 1756-PA75R and 1756-PB75R.
  • Passive Adapter Design: Contains no active electronics, reducing failure points in power distribution.
  • Defined Mounting Location: Installs on the left side of the chassis for standardized system configuration.
  • Hazardous Location Ratings: Includes Ex nA IIC T4 Gc certification for use in designated industrial zones.
  • Current Handling Capability: Supports multiple voltage rails with specified current limits for system stability.
  • Grounding Requirements: Requires proper grounding and short wire lengths to maintain low resistance.
  • Installation Cable Support: Utilizes the 1756-CPR2 cable with a minimum 5-inch bend radius for safe routing.

The 1756-PSCA2 delivers the reliability and precision required for stable redundant power distribution in ControlLogix automation systems.

Frequently Asked Questions about 1756-PSCA2
Question: What is the function of the 1756-PSCA2 module?
Date Update:03/06/2025
Answer:

The 1756-PSCA2 is a chassis adapter module designed for ControlLogix systems. It funnels power from one or two redundant power supplies into the single power connector on the ControlLogix chassis backplane. This setup ensures continuous power delivery to the system, enhancing reliability and minimizing downtime in critical applications.

Question: What are the key specifications of the 1756-PSCA2?
Date Update:03/06/2025
Answer:

Key specifications include:

  • Power Dissipation: 25.7 Watts at 30°C; 21.3 Watts at 60°C
  • Backplane Current (24V): 125 mA
  • Operating Temperature Range: 0°C to 60°C (32°F to 140°F)
  • Mounting Location: Left side of the 1756 chassis
  • Compatible Chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
  • Dimensions: Approximately 5.51 x 4.41 x 5.71 inches (14.0 x 11.2 x 14.5 cm)
  • Weight: Approximately 0.95 kg (2.10 lb)
Question: Which power supplies are compatible with the 1756-PSCA2?
Date Update:03/06/2025
Answer:

The 1756-PSCA2 is compatible with the following redundant power supplies:

  • 1756-PA75R: Redundant AC power supply
  • 1756-PB75R: Redundant DC power supply

These power supplies, in conjunction with the 1756-PSCA2, provide a redundant power solution for ControlLogix systems, ensuring uninterrupted operation.

Question: What are the installation considerations for the 1756-PSCA2?
Date Update:03/06/2025
Answer:

When installing the 1756-PSCA2:

  • Mounting: Install on the left side of the 1756 chassis.
  • Clearance: Ensure a minimum clearance of 5.0 inches (12.7 cm) on the left side for cable routing and connection.
  • Cabling: Use the 1756-CPR2 cable to connect the redundant power supplies to the chassis adapter.
  • Environmental Conditions: Operate within the specified temperature range and ensure the enclosure provides adequate protection.
Question: Does the 1756-PSCA2 support hot-swapping or redundancy features?
Date Update:03/06/2025
Answer:

The 1756-PSCA2 is a passive device that facilitates redundant power supply configurations. While it does not support hot-swapping itself, it enables the use of redundant power supplies, which can be configured for hot-swapping to ensure continuous power delivery without system interruption.

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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 For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1756-PSCA2 is a chassis adapter module designed to interface redundant power supplies with a ControlLogix chassis. It routes power from one or two supplies into the backplane, ensuring stable distribution for demanding automation systems. This module is primarily used in applications requiring high availability and power redundancy.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLC Power & Adapter Modules
Part Number 1756-PSCA2
Subcategory ControlLogix Redundant Power Components
Series ControlLogix
Module Type Chassis Adapter Module for Redundant Power Supply
Mounting Position Left side of chassis
Compatible Power Supplies 1756-PA75R, 1756-PB75R
Terminal Blocks 3 RTBs (1756-TBSH or 1756-TBNH)
Backplane Current (24 VDC) 125 mA
Current Capacity (1.2 VDC) 1.5 A
Current Capacity (3.3 VDC) 4 A
Current Capacity (5.1 VDC) 15 A
Current Capacity (24 VDC) 2.8 A
Power Dissipation 25.7 W at 30 °C; 21.3 W at 60 °C
Operating Temperature 0–60 °C (32–140 °F)
Cable Requirement 1756-CPR2 (5-inch minimum bend radius)
Enclosure Type None (open-type device)
Hazardous Location Rating Ex nA IIC T4 Gc
Weight 0.228 kg

 

 

Information About 1756-PSCA2

The 1756-PSCA2 is part of the Allen-Bradley ControlLogix series and is engineered as a passive chassis adapter for redundant power supply configurations. It is designed to work specifically with 1756-PA75R and 1756-PB75R power supplies, providing compatibility across standard ControlLogix installations. The module mounts to the left side of the chassis and uses a 1756-CPR2 cable with defined bend-radius requirements to ensure proper installation. Its design supports hazardous location approvals and meets grounding requirements essential for industrial environments.

Key Features:

  • Redundant Power Integration: Directs power from one or two redundant supply units into a single backplane connection.
  • ControlLogix Compatibility: Works exclusively with 1756-series redundant power supplies such as the 1756-PA75R and 1756-PB75R.
  • Passive Adapter Design: Contains no active electronics, reducing failure points in power distribution.
  • Defined Mounting Location: Installs on the left side of the chassis for standardized system configuration.
  • Hazardous Location Ratings: Includes Ex nA IIC T4 Gc certification for use in designated industrial zones.
  • Current Handling Capability: Supports multiple voltage rails with specified current limits for system stability.
  • Grounding Requirements: Requires proper grounding and short wire lengths to maintain low resistance.
  • Installation Cable Support: Utilizes the 1756-CPR2 cable with a minimum 5-inch bend radius for safe routing.

The 1756-PSCA2 delivers the reliability and precision required for stable redundant power distribution in ControlLogix automation systems.

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