Product Details
Product Overview
The 1746-C7 serves as a critical hardware bridge within the SLC 500 modular controller system. This high-density interconnect cable facilitates seamless backplane communication between two local chassis. Engineered for reliability in industrial environments, the 1746-C7 (PN: 1746-C7) ensures that the processor can address I/O modules across extended rack configurations without signal degradation.
Technical Specifications
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Manufacturer Allen-Bradley / Rockwell Automation
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Hardware Category PLC Chassis Components
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Product Series SLC 500 Modular Hardware
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Model Number 1746-C7
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Primary Function Backplane Interconnect (Chassis-to-Chassis)
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Physical Length 0.5 feet (0.15 meters / 6 inches)
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Slot Requirement Occupies 1 slot on each connected chassis
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Current Draw at 5V DC 110 mA
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Current Draw at 24V DC 85 mA
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Module Compatibility SLC 500 Fixed and Modular Hardware
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Interconnect Support Supports Analog and Thermocouple input modules across the backplane
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Ancillary Hardware Compatible with 1492-CABLE010H and 1792-IFM40F interface systems
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Shipping Weight 0.13 lbs (0.06 kg)
Application and Installation
The 1746-C7 is specifically designed for side-by-side chassis mounting. Because the cable length is fixed at 6 inches, it provides the lowest possible impedance for high-speed data transfer between the CPU chassis and the expansion chassis. For vertical mounting or wider spacing, engineers should consider longer variants like the 1746-C9.
Frequently Asked Questions
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Does the 1746-C7 require a separate power supply?
No, the cable draws its operating current (110mA @ 5V / 85mA @ 24V) directly from the SLC backplane power supply.
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Can I hot-swap this cable while the PLC is running?
It is strongly recommended to remove all system power before installing or removing the 1746-C7 to prevent backplane shorts or data corruption.
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Is the 1746-C7 shielded?
Yes, it features industrial-grade shielding to protect the sensitive backplane bus signals from electromagnetic interference (EMI) typical in factory environments.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Mastering Wire Identification in Industrial Automation: The Power of Ferrules and Cross-Ferruling
Proper wire labeling forms the cornerstone of reliable control system installation and long-term maintenance. In complex industrial automation environments, technicians terminate thousands of conductor ends inside control panels, marshalling racks, and field junction boxes. Ferrules serve as individual tube-shaped sleeve markers slipped onto conductors before final termination. While technicians historically relied on pre-printed individual letter rings, modern control panel builders utilize automated ferrule printing machines. These thermal-transfer printers generate durable, single-sleeve heat-shrink tags directly matching approved wiring schematics, significantly accelerating cabinet assembly workflows.
Understanding Marshalling Cabinets in Industrial Automation and Control Systems
Marshalling cabinets serve as the crucial connection hub between field instruments and centralized processing units. In large DCS and PLC control system architectures, hundreds of multipair field cables run from local junction boxes to the central instrument equipment room. The marshalling cabinet houses field terminal blocks, surge arresters, intrinsic safety isolation barriers, and interposing relays. By segregating field field-wiring terminations from sensitive processor hardware, engineers protect expensive controller backplanes from high-voltage transients. Consequently, this modular separation dramatically streamlines maintenance workflows and simplifies system expansion.
Essential Best Practices for PLC Wiring and Installation in Industrial Automation
Successful control system deployment begins with thoroughly reviewing manufacturer technical documentation. Controllers from major brands like Allen-Bradley, Siemens, and Schneider Electric feature unique terminal layouts. Engineers must verify voltage requirements before connecting power cables to prevent catastrophic equipment damage. Standard line connections require strict adherence to regional electrical codes and proper wire color coding. Furthermore, panel builders should always establish a robust low-impedance ground connection using at least 16-AWG copper conductor tied directly to the main plant grounding grid.