Configured for SynchLink signal conversion in ControlLogix systems, the Allen-Bradley 1751-SLBA (1751-SLBA SynchLink Base Block) provides direct electrical interface execution between SynchLink fiber splitter blocks and ControlLogix synchronization networks.

Model Identification & Configuration Matrix

The 1751-SLBA is a SynchLink interface block designed to convert SynchLink communication signals into electrical signals. It supports connection with up to four fiber 4-port splitter blocks and provides power distribution through the ControlLogix backplane interface.

Hardware Configuration Details

The 1751-SLBA provides the electrical conversion interface required for SynchLink fiber communication components. The module receives 24 VDC input power and supplies a 5.1 VDC backplane output for connected ControlLogix SynchLink assemblies.

ControlLogix Communication Architecture

The 1751-SLBA follows Allen-Bradley ControlLogix industrial communication architecture by providing SynchLink electrical conversion and module-level synchronization support. The block enables connection between fiber-based SynchLink components and electrical control system interfaces.

For synchronized motion or coordinated control applications, the module works as part of the SynchLink communication chain. Network configuration, module compatibility, and firmware revision matching should be verified before system commissioning.

The module includes ESD immunity characteristics with 8 kV air discharge and 4 kV contact discharge ratings. Proper grounding and wiring practices are required for industrial installation.

Ordering Information

The shipment configuration includes:

• 1 x Allen-Bradley 1751-SLBA SynchLink Base Block
• 1 x Factory module assembly
• 1 x Product identification label

Additional components for system installation:

• SynchLink fiber 4-port splitter blocks
• ControlLogix compatible communication modules
• 24 VDC power supply
• Copper field wiring accessories

Field Installation Guidelines

Mechanical Installation

• Mount the 1751-SLBA on a suitable control panel surface.
• Confirm the mounting location allows access for wiring and maintenance.
• Verify the module is securely fixed before connecting cables.

Power Connection

• Connect the 24 VDC input supply according to electrical specifications.
• Use copper conductors for field connections.
• Confirm voltage polarity before applying power.

SynchLink Interface Setup

• Verify fiber splitter block compatibility before connection.
• Check communication path configuration within the ControlLogix system.
• Maintain proper grounding and cable separation practices.

Frequently Asked Questions

• What is the function of the 1751-SLBA module?

The 1751-SLBA converts SynchLink signals into electrical signals and provides an interface for connecting fiber 4-port splitter blocks.

• What power supply is required for the 1751-SLBA?

The module requires a 24 VDC input supply and provides 5.1 VDC output power to the ControlLogix backplane.

• How many fiber splitter blocks can be connected?

The 1751-SLBA supports connection to up to four fiber 4-port splitter blocks within a SynchLink network.

• What is the input current rating of the module?

The specified input current is 600 mA Class 2 from the 24 VDC supply connection.

• What is the backplane output current rating?

The module provides up to 1.2 A output current through the ControlLogix backplane interface.

• Does the 1751-SLBA provide Ethernet communication?

No. The module is designed for SynchLink signal conversion and does not contain an Ethernet communication interface.

• What type of wiring is required for installation?

The module uses copper wiring connections for electrical power and interface connections.

• What ESD protection levels are specified?

The module provides 8 kV air discharge and 4 kV contact discharge immunity according to the supplied specifications.