Honeywell 51195479-400 PM I/O Link Cable Set for C300

Product Overview

Honeywell 51195479-400 is a five-drop PM I/O Link Cable Set for the Experion PKS C300 control system.

It connects a C300 Controller IOTA to PM files containing Process Manager Input/Output Processors (PM IOPs). The cable assembly provides a passive communication path over the 375 KBaud PM I/O Link.

This assembly supports multi-drop PM I/O connectivity. Its five-drop configuration allows the PM I/O Link to connect with multiple PM I/O destinations.

The C300 controller provides two PM I/O Links: IOL1 and IOL2. Each link has dedicated connection points and cable identification.

For redundant PM I/O Link configurations, the system requires an A+B cable pair. The cable set does not provide active signal processing or independent communication ports.

Technical Specifications

Key Technical Features

• Five-Drop Configuration: Provides a multi-drop connection arrangement for PM I/O installations.
• 375 KBaud Communication: Supports the dedicated PM I/O Link communication architecture.
• Dual Link Architecture: Works within the C300 IOL1 and IOL2 connection structure.
• Redundant Link Support: Uses separate A and B cable paths for redundant configurations.
• Passive Cable Assembly: Provides physical connectivity without active signal processing.
• Dedicated Link Identification: Uses different connector identification and cable colors for IOL1 and IOL2.

PM I/O Link Identification

Honeywell uses dedicated identifiers for the two PM I/O Links. Correct identification helps prevent installation errors.

The A and B identifiers distinguish the corresponding redundant connection paths. Always follow the approved system wiring drawings.

Installation Guidelines

Correct cable routing and link identification help maintain reliable PM I/O communication.

1. Verify the Controller: Confirm that the installation uses a compatible Honeywell C300 Controller IOTA.
2. Check the Link Assignment: Identify the required IOL1 or IOL2 connection before installation.
3. Prepare the Adapter: Install the required 51202341-112 adapter pair at the C300 IOTA end.
4. Identify the Cable Paths: Match the cable markings with the approved cabinet wiring drawings.
5. Connect the PM Files: Route the five-drop harness to the designated PM files containing PM IOPs.
6. Verify Redundancy: Install both A and B cable paths when the configuration requires redundant communication.
7. Inspect Cable Routing: Check cable placement, connector engagement, and mechanical protection.
8. Perform System Checks: Confirm PM I/O communication through the Experion PKS engineering and diagnostic tools.

Installation Note: Honeywell does not publish a fixed overall harness length for this cable set. Determine routing requirements from the actual cabinet layout and approved engineering drawings.

Commissioning and Maintenance

The 51195479-400 is a passive cable assembly. It does not require independent software configuration or firmware loading.

During commissioning, engineers should focus on physical connectivity and communication status.

• Check all cable connections at the C300 IOTA and PM file ends.
• Verify IOL1 and IOL2 assignments against the system configuration.
• Confirm A/B path separation in redundant installations.
• Check PM I/O communication status through the controller diagnostics.
• Inspect cable routing for mechanical stress or connector damage.
• Compare link performance against the approved system configuration.

If communication fails, inspect the adapter connections and cable paths before replacing the assembly. Also check the PM IOP status and controller-side diagnostics.

Compatibility and Application

51195479-400 is designed for Honeywell Experion PKS systems using the C300-to-PM I/O Link architecture.

Its primary application is physical connectivity between a C300 Controller IOTA and PM files containing PM IOPs.

• Controller Side: Honeywell C300 Controller IOTA.
• PM Side: Compatible PM files containing PM IOPs.
• Communication: 375 KBaud PM I/O Link.
• Link Assignment: IOL1 or IOL2, according to the system design.
• Redundant Installation: Requires the corresponding A+B cable pair.
• Adapter Requirement: 51202341-112 adapter pair at the C300 IOTA end.

Selection Reminder: Verify the cable part number, drop configuration, I/O Link assignment, and adapter requirements before ordering. Do not assume that visually similar PM I/O cables have identical electrical or mechanical specifications.

Performance and Environmental Information

This product is a passive communication cable assembly. Measurement accuracy, sensor sensitivity, linearity, and resolution do not apply.

Certification and Compliance

The Honeywell Series-C platform references the following system-level standards:

• EN 61326-1:2013: Electromagnetic compatibility requirements for electrical equipment.
• IEC/EN 61010-1: Safety requirements for electrical measurement, control, and laboratory equipment.

These references apply to the Series-C platform and its certified system assembly. They do not establish independent product certifications for the 51195479-400 cable set.

For project compliance, verify the applicable cabinet-level certificates and system documentation.

Package Contents

• 1 × Honeywell 51195479-400 PM I/O Link Cable Set, five-drop configuration.

Note: The 51202341-112 adapter pair is a separately identified installation requirement. Confirm its inclusion before ordering.

Frequently Asked Questions (FAQ)

Q1: What is the main function of the Honeywell 51195479-400?

It provides a passive PM I/O Link connection between a C300 Controller IOTA and PM files containing PM IOPs. The assembly supports five drops and operates within the 375 KBaud communication architecture.

Q2: Does the 51195479-400 support redundant PM I/O communication?

Yes. The redundant configuration requires an A+B cable pair. One cable assembly alone does not provide the complete redundant connection.

Q3: What is the difference between IOL1 and IOL2?

They represent the two PM I/O Links available on a C300 Controller. IOL1 uses gray identification, while IOL2 uses violet identification. Their connector markings also differ.

Q4: Does this cable set require an additional adapter?

Yes. The specified installation requires a 51202341-112 adapter pair at the C300 IOTA end. Confirm the adapter arrangement against the applicable hardware drawings.

Q5: Can the 51195479-400 connect directly to any PM I/O module?

No. It connects the C300 Controller IOTA to compatible PM files containing PM IOPs. Verify the PM file architecture and system compatibility before installation.

Q6: What should engineers check if PM I/O communication becomes unstable?

Start with the physical connections and IOL1/IOL2 assignments. Then inspect the A/B paths, adapter connections, and PM IOP status. Review controller diagnostics before replacing the cable.

Q7: How can buyers distinguish the correct cable configuration?

Check the complete part number, five-drop configuration, link identification, and redundancy requirements. Confirm the 51202341-112 adapter requirement. Do not select a replacement based only on connector appearance.

Q8: Does Honeywell publish the cable length and conductor specifications?

The referenced Honeywell documentation does not specify the overall harness length, conductor gauge, or jacket material for this exact assembly. Request official supporting documentation when these details affect project approval.

Q9: Can another PM I/O Link cable replace the 51195479-400?

Not without a compatibility review. Compare the drop count, link architecture, connector arrangement, cable routing, and redundancy requirements. Confirm the replacement against the applicable Honeywell engineering documentation.

Q10: What information should buyers provide when requesting a quotation?

Provide the complete model number, required quantity, C300 hardware configuration, and IOL1/IOL2 application. Also specify whether the installation requires redundant A+B cable paths and the 51202341-112 adapter pair.

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