Description
2090-XNSM-T A-B Terminal Head
Product Dimensions：
Product Description (Detailed Explanation)
The 2090-XNSM-T is a fiber-optic Sercos terminator used to close the optical communication ring. In a Sercos network, data travels in a continuous loop from the controller, through each servo drive, and back to the controller.
This specific part is a Transmitter Terminator. It is used during system commissioning or troubleshooting to “loop back” signals or to properly terminate unused ports in specific network topologies. By providing a clean optical return path, it prevents signal reflections and communication “noise” that could lead to intermittent motion axis faults or synchronization errors.
Product Parameters (Technical Specifications)
| Parameter Category | Specification |
| Component Type | Sercos Fiber Optic Terminator |
| Connector Type | F-SMA Standard |
| Fiber Type | Plastic Optical Fiber (POF) / HCS compatible |
| Wavelength | 650 nm (Visible Red Light) |
| Housing Material | Industrial Grade Polymer/Metal |
| Operating Temp. | -40°C to +85°C (-40°F to +185°F) |
| Compatibility | Kinetix 6000, 6200, 2000, and Sercos Interface Modules (1756-MxxSE) |
Product Advantages (Key Benefits)
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Signal Stabilization: Eliminates optical data echoes and reflections, ensuring deterministic synchronization between multiple motion axes.
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Plug-and-Play: Requires no configuration; simply screws onto the F-SMA port of the drive or controller.
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Diagnostic Accuracy: Essential for isolating network segments during troubleshooting to determine if a communication error is caused by a specific cable or a drive.
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Rugged Construction: Designed to withstand the high-vibration environments typical of industrial motor control centers and machine-mounted enclosures.
Precautions (Important Notes)
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Contamination Risk: The optical face of the terminator must be kept perfectly clean. Even microscopic dust or finger oils can cause significant signal attenuation (light loss). Use lint-free wipes and isopropyl alcohol for cleaning.
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Overtightening: Hand-tighten the SMA nut only. Using tools like pliers can strip the threads or damage the internal optical alignment of the port.
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Bend Radius: While this is a connector, ensure that the fiber cables leading to the adjacent ports maintain a minimum bend radius to prevent light leakage.
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Proper Storage: Always keep the protective dust cap on the terminator when it is not installed on a drive.
Product Applications (Typical Use Cases)
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Ring Closure: Used at the end of a Sercos fiber chain to complete the circuit back to the 1756-M16SE or 1756-M08SE motion module.
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Axis Testing: Allowing a machine to run with certain drives “bypassed” or disconnected by terminating the loop at an earlier stage.
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System Commissioning: Verifying the integrity of the Sercos controller’s transmit and receive ports before connecting the full field cable string.
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Kinetix Drive Maintenance: Temporary termination of a network branch while a drive is being replaced or serviced.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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