Product Details
The Honeywell 51308112-003, also cataloged as the 51308112-003 Coaxial Cable Assembly, operates as a dedicated hardware component for high-speed Local Control Network (LCN) node interconnectivity within Honeywell TDC 3000 DCS platforms. Constructed as a 3 meter RG11 coaxial cable pair with pre-installed inline ferrite cores, the cable set establishes redundant physical layer links between network interface modules. The RG11 assembly maintains controlled characteristic impedance to minimize signal attenuation and high-frequency noise reflections across local control bus spans.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 51308112-003 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 2.01 lbs (0.91 kg) |
| Dimensions | Cable Length: 3 meters (9.84 ft) |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Passive Interconnect Assembly |
| Cable Specification | RG11 Coaxial with Inline Ferrite Cores |
| Set Quantity | Set of 2 cables (Redundant Link Pair) |
| Core Application | Connecting Local Control Network (LCN) Nodes |
| Cable Impedance | 75 Ohm nominal |
Channel-to-Channel Isolation
The 51308112-003 RG11 coaxial cable set utilizes heavy braid and foil shielding around each conductor to prevent RF interference and cross-talk between redundant LCN A and LCN B network channels. Integrated inline ferrite beads suppress common-mode electromagnetic noise and high-frequency voltage transients before signals reach transceiver electronics on the network interface cards. This physical and electrical isolation preserves low-error bit transmission across active control node connections.
Frequently Asked Questions
Q: Can an individual cable in the 51308112-003 dual set be disconnected while the LCN network is operational?
A: Disconnecting one cable breaks communication on that specific link channel (A or B), but the network maintains operational node connectivity via the secondary redundant cable.
Q: What is the primary purpose of the inline ferrite cores on this RG11 coaxial assembly?
A: The ferrite cores act as high-frequency chokes to attenuate common-mode noise and electromagnetic interference picked up along the 3 meter cable run.
Q: What installation precautions prevent physical degradation of the RG11 coaxial cable structure?
A: Maintain the manufacturer specified minimum bend radius during cabinet routing to avoid deforming the dielectric core or damaging the outer shield braid.
Field Installation Guidelines
- Inspect the 3 meter cable jacket, BNC/F-type connectors, and ferrite modules for physical damage before installation.
- Route Link A and Link B coaxial cables through distinct cabinet paths to preserve physical redundancy and prevent concurrent mechanical damage.
- Align the coaxial connectors with the LCN node interface ports and twist to lock firmly into position.
- Ensure connector shield shells establish full 360-degree contact with the mating jack for ground continuity.
- Avoid overtightening or sharp bends near the connector terminations to prevent internal impedance mismatches.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
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- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
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- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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PLC and DCS Control System Spares Strategy: Engineering Guidelines
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