TC-MUX021 Honeywell Serial Interface Module

Product Description

The Honeywell TC-MUX021, part number 51404391-375, is a serial interface module intended for industrial automation communication. Its listed RS-232 and RS-485 interfaces support serial connections between compatible control equipment and field devices. The supplied specifications also identify a 24 VDC input and multiple electrical ratings. Verify the interface configuration and power requirements against the installed system before replacement.

Technical Specifications

Communication Interfaces and Application

The listed RS-232 and RS-485 interfaces use different serial communication methods. RS-232 typically serves point-to-point connections, while RS-485 supports differential signaling and can accommodate multidrop networks when the protocol and device configuration allow it. Confirm the required interface, wiring arrangement, protocol, and connector pinout before connecting field equipment.

Power and Electrical Ratings

The supplied data lists a 24 VDC input alongside electrical ratings at 1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC. These values may describe different internal supply rails or circuits rather than a single input-power specification. Confirm the meaning of each rating and the module's actual power requirements before installation or replacement.

System Configuration

The TC-MUX021 is documented as a two-channel Serial Interface Module (SIM) for Honeywell Experion control systems. Each channel uses a Field Termination Assembly (FTA), and the physical interface depends on the selected FTA. The documented configuration includes Modbus RTU and Allen-Bradley DF1 options; the required adapters, cables, and termination assemblies must match the intended communication setup.

Frequently Asked Questions

Q: How many serial communication channels does the TC-MUX021 support?

A: The TC-MUX021 is specified as a two-channel serial interface module. Each channel connects through its associated FTA.

Q: Which serial interfaces and protocols can be used?

A: The physical interface can be RS-232 or RS-422/485, depending on the FTA. Supported configurations include Modbus RTU and Allen-Bradley DF1; protocol selection depends on the connected termination assembly and system configuration.

Q: Does the TC-MUX021 support data transfer rates up to 1 Mbps?

A: The supplied product information lists up to 1 Mbps, but the Experion LS technical specifications list a maximum communication speed of 19.2 kb/s per FTA. Confirm the applicable specification for the installed hardware before using either value for system design.

Other Attributes

• Series: Honeywell Experion PKS(C200,C300)
• Country of Origin:  USA
• Lead Time: In Stock, 2 Working Days

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