Description:
The Allen-Bradley 1786-TJPR is a pre-wired DeviceNet T-port tap connector used to branch individual devices (like sensors, I/O blocks, or drives) onto a DeviceNet fieldbus trunk line. It features a right-angle micro-style connector design that saves space in crowded control panels. The assembly includes a sealed male connector (plug) and a sealed female connector, pre-terminated on a yellow CPE (chlorinated polyethylene) cable, providing a rugged, IP67-rated connection point for DeviceNet thin media networks. It is a fundamental building block for creating modular and maintainable DeviceNet installations.
Application Scenarios:
In an automotive body shop, a maintenance technician needs to replace a faulty photoelectric sensor on a DeviceNet network. The existing wiring is routed through tight cable trays. Using the 1786-TJPR tap, the technician quickly unplugs the old sensor from the T-port and plugs in the new one. The right-angle design of the 1786-TJPR prevents the cable from bending too sharply against the panel wall, reducing mechanical stress and ensuring a reliable connection without having to re-wire the entire trunk line.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1786-TJPR |
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Product Type | DeviceNet T-Port Tap / Pre-wired Cable Assembly |
| Network Media | DeviceNet Thin Media (Yellow CPE Cable) |
| Connector Style | Micro-style (5-pin), Right Angle |
| Connector Ends | 1 x Male (Plug), 1 x Female (Receptacle) |
| Cable Length | 6 meters (Approx. 19.7 feet) |
| Cable Type | Thin Media, Yellow CPE or Gray PVC |
| Wire Gauge | 1 pair 22 AWG (Power), 1 pair 24 AWG (Signal) + Drain |
| Current Rating | 4 A per conductor @ 250 V |
| IP Rating | IP67 (Dust-tight, Protected against temporary immersion) |
| Operating Temp. | -25 °C to +70 °C (CPE cable variant) |
| Voltage Rating | 250 V AC/DC |
| Pinout | Pin 1: V–, Pin 2: CAN_L, Pin 3: Shield, Pin 4: CAN_H, Pin 5: V+ |
| Mounting | Connector locking nut (integrated) |
| Lifecycle Status | Active / Standard (Core component) |
Technical Principles and Innovative Values:
The 1786-TJPR simplifies DeviceNet network construction by providing a factory-sealed, pre-wired solution.
- Innovation Point 1: Right-Angle Space Saving. Unlike straight connectors that protrude significantly, the right-angle micro design allows the cable to run flush along the panel surface. This minimizes the footprint, reduces the risk of connectors being snapped off by accidental impact, and improves airflow in densely packed enclosures.
- Innovation Point 2: IP67 Sealed Integrity. The micro connectors feature a threaded coupling nut and a molded rubber seal, achieving an IP67 rating. This allows the T-port to be installed directly on machinery in washdown environments (like food & beverage plants) or in outdoor applications where exposure to moisture and dust is a concern.
- Innovation Point 3: Plug-and-Play Maintenance. The T-port concept enables a “device-level” maintenance strategy. If a node fails, a technician can simply unplug the device from the 1786-TJPR tap without disturbing the trunk line wiring or affecting communication to other nodes on the network. This drastically reduces mean-time-to-repair (MTTR).
