Overview
The Honeywell MU-NTAP02 51201394-100, also cataloged as the MU-NTAP02 Universal Control Network 2-Drop Tap Kit, operates as a dedicated passive network interface component for UCN coaxial signal distribution within Honeywell TDC 3000, TPS, and Experion PKS systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MU-NTAP02 |
| Brand | Honeywell |
| Origin | USA |
| Product Type | Universal Control Network (UCN) 2-Drop Tap Kit |
| Part Number | 51201394-100 |
| Network Architecture | Honeywell Universal Control Network (UCN) |
| Application | Passive coaxial trunk drop connection for DCS network nodes |
| Network Impedance | 75 ohm coaxial interface |
| Connector Type | Dual BNC 75 ohm coaxial connectors |
| Port Configuration | 2-drop tap assembly with trunk input and trunk output connections |
| Power Consumption | 0 Watts, passive component without external power supply |
| Operating Temp | -20 deg C to +60 deg C |
| Storage Temperature | -40 deg C to +85 deg C |
| Relative Humidity | 5% to 95% non-condensing |
| Mounting Type | Panel, chassis, or DIN rail bracket mounting |
| Isolation Method | Transformer-coupled passive signal isolation |
| Kit Contents | Two 2-port drop taps, terminators, mounting brackets, and hardware |
UCN Coaxial Network Signal Isolation Characteristics
The MU-NTAP02 provides a passive coupling point between the UCN trunk cable and connected control system devices. Therefore, it maintains 75 ohm coaxial impedance matching while reducing signal reflection caused by improper termination.
Honeywell UCN networks use dedicated physical-layer components to maintain stable communication paths between process controllers and network nodes. Furthermore, the transformer-coupled interface provides electrical isolation between trunk segments and drop connections.
For Honeywell process control architectures, this hardware supports network layouts requiring channel-to-channel isolation principles. However, the MU-NTAP02 itself does not process digital data, execute control logic, or provide protocol conversion functions.
The assembly supports redundant UCN configurations by providing separate trunk connection paths for applications using Trunk A and Trunk B network arrangements.
Frequently Asked Questions
Q: Does the Honeywell MU-NTAP02 require external power during operation?
A: No. The MU-NTAP02 is a passive network component and operates without external power input or backplane current consumption.
Q: Does the MU-NTAP02 perform UCN communication processing?
A: No. The unit only provides physical coaxial signal coupling and isolation. The connected Honeywell controller modules perform all network communication processing.
Q: Can the MU-NTAP02 support redundant UCN network configurations?
A: Yes. The assembly supports redundant trunk arrangements when installed according to the Honeywell UCN network topology requirements.
Field Installation Guidelines
- Install the MU-NTAP02 according to Honeywell UCN network installation procedures and approved cabinet layouts.
- Verify all coaxial connections use compatible 75 ohm cable components and connectors.
- Confirm proper termination placement at the network endpoints before system startup.
- Maintain separation between UCN coaxial cables and high-voltage power wiring to reduce electromagnetic interference.
- Connect cable shields according to the site grounding standard to prevent unwanted noise coupling.
- Inspect BNC connectors for mechanical damage, contamination, or loose locking conditions before commissioning.
- Avoid installing the tap assembly in locations exposed to moisture, excessive vibration, or unauthorized mechanical stress.
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