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Honeywell MU-NTAP02 Universal Control Network 2-Drop Tap Assembly Kit

The Honeywell MU-NTAP02 (51201394-100), also cataloged as the MU-NTAP02 Universal Control Network 2-Drop Tap Assembly Kit, operates as a passive network hardware component for UCN coaxial trunk connection and field drop-point distribution within Honeywell TDC 3000 and Experion PKS systems.

Hardware Specifications

Parameter	Specification
Model	MU-NTAP02
Brand	Honeywell
Origin	USA
Weight	Approx. 2.0 kg to 3.0 kg
Operating Temp	-20 deg C to +60 deg C
Power Consumption	0 W (passive network component)
Part Number	51201394-100
Product Type	Universal Control Network 2-Drop Tap Assembly Kit
Network Type	Honeywell Universal Control Network (UCN)
Application Interface	75 Ohm coaxial trunk cable connection
Port Configuration	Dual drop tap assembly, one trunk input and one trunk output per tap
Nominal Impedance	75 Ohm
Storage Temperature	-40 deg C to +85 deg C
Relative Humidity	10% to 90%, non-condensing
Grounding Method	Metal mounting bracket with chassis grounding provision
Included Components	Two 2-port drop taps, mounting brackets, associated hardware

UCN Network Tap Signal Distribution Characteristics

The Honeywell MU-NTAP02 provides a passive electrical connection point between UCN trunk cables and connected control network devices. It maintains the 75 Ohm coaxial impedance required by Honeywell UCN communication architecture.

Furthermore, the assembly supports redundant UCN trunk arrangements by providing paired tap hardware for Trunk A and Trunk B network paths. The passive design introduces no power load and preserves continuous network signal transmission through the coaxial backbone.

For Honeywell process control systems, the module operates independently from analog instrument interfaces such as 4-20 mA HART loops, FOUNDATION Fieldbus, or Profibus PA segments. Instead, it performs physical-layer UCN cable distribution and grounding functions.

The assembly design incorporates grounding provisions to reduce electromagnetic interference effects. Therefore, correct shield termination and chassis bonding remain required during field installation.

Frequently Asked Questions

Q: Does the Honeywell MU-NTAP02 require an external power supply?
A: No. The MU-NTAP02 is a passive coaxial network tap assembly and does not consume electrical power during operation.

Q: Can the MU-NTAP02 support redundant UCN network configurations?
A: Yes. The kit contains two drop tap assemblies that can be applied to redundant UCN trunk structures using separate network paths.

Q: Does the MU-NTAP02 provide signal conversion between different communication protocols?
A: No. The module performs physical UCN coaxial connection and distribution only. It does not convert communication protocols or modify network data.

Field Installation Guidelines

• Install the MU-NTAP02 on a mechanically secured surface using the supplied mounting hardware.
• Connect UCN coaxial cables according to the Honeywell UCN wiring design and maintain the specified 75 Ohm cable impedance.
• Verify that coaxial connectors remain properly seated to prevent signal reflection and intermittent communication faults.
• Bond the mounting bracket to the approved chassis ground point to maintain shielding performance.
• Separate UCN coaxial routing from high-voltage power cables and strong electromagnetic interference sources.
• Confirm trunk continuity and termination status before placing the UCN network segment into service.

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