Configured for system redundancy synchronization in ControlLogix platforms, the Allen-Bradley 1757-SRC1, also cataloged as the 1757SRC1 Redundancy Module Cable, provides direct physical-layer interconnection between paired 1757-SRM modules.

Catalog Identification & Suffix Architecture

• Primary Catalog Number: 1757-SRC1
• Spare Part Designator: 1757SRC1
• Physical Length: 1 meter (3.28 feet)
• Compatible Hardware: 1757-SRM System Redundancy Modules

Hardware Specifications

Network Communication & Backplane Integration

The cable maintains deterministic data synchronization across redundant processor nodes, supporting backplane bus communication velocity licenses and Profinet or EtherNet/IP deterministic networks. Firmware flash compatibility across the connected controllers remains unhindered during active synchronization, ensuring uniform execution loops and reliable switchover timing during system failures.

Order Deliverables & Package Contents

• 1 x Allen-Bradley 1757-SRC1 redundancy module cable assembly
• 2 x Protective dust caps for ST-type fiber-optic connector ferrules
• 1 x Technical documentation and compliance insert

Mechanical Installation & Routing Guidelines

• Cable Routing: Route the fiber-optic and D-Sub cable away from high-voltage power conduits and variable frequency drive cables to avoid electromagnetic interference.
• Bend Radius Compliance: Maintain the minimum allowable bend radius for the fiber-optic core to prevent signal attenuation or permanent core fracture.
• Connector Engagement: Secure the 9-pin D-Sub locking screws completely to prevent terminal loosening caused by industrial vibration.

Frequently Asked Questions

• What is the standard physical length of the 1757-SRC1 cable?

  The cable features a fixed length of 1 meter, equivalent to 3.28 feet.

• Which specific hardware modules require this cable for operation?

  It is engineered specifically for use with 1757-SRM system redundancy modules in paired controller architectures.

• What types of physical connections are integrated into the assembly?

  The assembly includes a 9-pin D-Sub male-to-male connector paired with ST-type fiber-optic interfaces.

• What is the characteristic impedance specification of the data lines?

  The impedance is rated at 100 ohm with a manufacturing tolerance of plus or minus 10 percent.

• What is the maximum data transmission rate supported?

  The cabling supports data communication speeds up to 100 Mbps between redundant nodes.

• What are the thermal limits for storage environments?

  The cable can be stored safely in ambient temperatures ranging from -40 deg C to +85 deg C.

• What is the net physical weight of the unit?

  The cable weighs 0.2 kg, excluding outer shipping boxes and packing materials.

• Where is the manufacturing origin of this product?

  The unit is manufactured in the United States, with shipments originating from Xiamen, China.