Allen-Bradley 1394C Series Modules - 1394C-SJT05-T-RL

Technical Dossier

Product Details And Specifications

Allen-Bradley 1394C Series Technical Notes

The Evolution of 1394C Architecture

The 1394 family was introduced by Allen-Bradley in the early 1990s as a successor to discrete single-axis drive configurations. The original 1394 (non-C suffix) used analog command interfaces and was limited to standalone axis operation. The 1394C revision introduced a shared DC bus topology, allowing multiple axis modules to draw from a common power rail — reducing cabinet footprint and improving regenerative energy handling across axes.

The architecture evolved through several firmware generations: early units used RS-232 serial configuration; later revisions added DeviceNet and Remote I/O (RIO) communication adapters. The 1394C-SJT series introduced the SERCOS fiber-optic motion bus interface, enabling deterministic real-time position loop closure at 1 ms and 2 ms cycle times — a requirement for high-speed coordinated motion in packaging and press applications.

1394C Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the 1394C product family. Each entry reflects a distinct functional role within the multi-axis servo system architecture.

System (Chassis / Power) Modules:

• 1394C-SJT05-T: 5 kW shared DC bus system module, 460 VAC input, no SERCOS
• 1394C-SJT05-T-RL: 5 kW system module with SERCOS fiber interface, ControlLogix-compatible
• 1394C-SJT10-T: 10 kW system module, 460 VAC, standard RIO communication
• 1394C-SJT10-T-RL: 10 kW system module with SERCOS, multi-axis coordinated motion
• 1394C-SJT22-T: 22 kW high-power system module, 460 VAC three-phase input
• 1394C-SJT22-T-RL: 22 kW system module with SERCOS fiber-optic motion bus

Axis Modules (AM — single-axis drive cards):

• 1394C-AM03: 3 A continuous axis module, plug-in to 1394C system chassis
• 1394C-AM07: 7 A continuous axis module, supports MPL and F-Series servo motors
• 1394C-AM14: 14 A continuous axis module, high-torque servo applications
• 1394C-AM25: 25 A continuous axis module, large-frame motor compatibility

Communication & Interface Modules:

• 1394-SR9: SERCOS ring interface card for 1394C system modules
• 1394-DNB: DeviceNet adapter module for 1394C integration into DeviceNet networks
• 1394-RIO: Remote I/O adapter, Allen-Bradley blue-hose RIO bus compatibility

Auxiliary & Feedback Modules:

• 1394C-SJT05-A: 5 kW system module, 230 VAC single-phase input variant
• 1394C-SJT10-A: 10 kW system module, 230 VAC input, compact installation
• 1394-TBAM: Terminal block assembly module for axis I/O wiring termination
• 1394-TB: System module terminal block, feedback and I/O signal wiring

Sourcing Hard-to-Find & Obsolete 1394C Parts

DriveKNMS supports the following procurement scenarios for 1394C components: direct replacement of failed axis modules without system-level migration; sourcing of discontinued communication adapters (DeviceNet, RIO, SERCOS) for network topology preservation; and supply of complete 1394C system module assemblies for facilities maintaining identical spare-for-spare replacement policies. All units are cross-referenced against Rockwell Automation catalog data to confirm series revision and firmware compatibility prior to shipment.

Quality Control for the 1394C Range

The 1394C platform presents specific test challenges due to its shared DC bus architecture and multi-axis backplane communication. DriveKNMS applies a structured validation protocol to all 1394C units prior to dispatch.