Product Details
Product Overview
The Allen Bradley 1786-TPYS functions as a critical connection point within a ControlNet coaxial media system. This Y-Tap allows a node—such as a PLC, I/O chassis, or HMI—to connect to the trunk line without interrupting the signal flow to other devices. We offer this unit as 100% Brand New, ensuring factory-spec signal impedance and physical integrity for high-speed deterministic networks.
Technical Specifications
The 1786-TPYS integrates rugged industrial housing with precision-tuned internal circuitry to maintain network balance.
| Feature | Specification |
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Part Number | 1786-TPYS |
| Network Type | ControlNet |
| Tap Style | Y-Tap (Straight) |
| Integrated Cable Length | 1 Meter (3.28 ft) |
| Connector Type | BNC (Coaxial) |
| Category | Machine Control / PLC Communication |
| Weight | 0.45 lbs (0.20 kg) |
| Housing | Industrial-grade polymer |
Engineering Advantages
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Non-Intrusive Node Integration: The 1786-TPYS allows for the addition or removal of nodes from the ControlNet network without breaking the trunk line continuity. This design prevents system-wide downtime during hardware maintenance or expansion.
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Optimized Signal Path: The "Straight" configuration and fixed 1-meter drop cable eliminate the guesswork of cable trimming. It provides a pre-measured, low-attenuation path that ensures your device meets the required signal-to-noise ratio for 5 Mbps data rates.
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Passive Reliability: Because the Y-Tap operates as a passive component, it requires no external power. It maintains network impedance (75 Ω) through high-quality internal coupling, effectively preventing signal reflections that cause packet loss.
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Rapid Deployment in Cabinets: The compact form factor excels in crowded PLC racks. The 1-meter pigtail provides sufficient reach to connect the trunk line mounted on the enclosure wall to a controller located in the center of the rack.
FAQs
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What is the difference between a "Straight" Y-Tap and a "Right-Angle" Tap?
The 1786-TPYS features a straight cable exit, which suits deep enclosures where the cable can run directly outward from the tap. Right-angle versions (like the 1786-TPS) assist in shallow cabinets where bend radius constraints require the cable to exit parallel to the mounting surface.
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Does the 1-meter cable length affect network distance calculations?
Yes. When calculating your total ControlNet segment length, you must include the 1-meter drop cable of each 1786-TPYS. Exceeding the maximum allowed segment length without a repeater can lead to timing errors.
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Can I shorten the integrated 1-meter BNC cable?
We strongly advise against modifying the integrated drop cable. The factory-sealed BNC connection ensures electromagnetic shielding. Cutting or re-terminating the cable risks introducing impedance mismatches and EMI vulnerabilities.
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How do I terminate the unused ports on a 1786-TPYS?
If you install a tap but do not yet have a node to connect, you must install a 75 Ω terminator (1786-XT) on the unused BNC port. This prevents signal reflections from crashing the entire network segment.
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
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