Brand: Honeywell
Model: 51202329-312
Type: Violet I/O Link Drop Cable Pair
Series: Experion PKS Series C
Core Function: IOL2 Communication and PM I/O Connectivity
Country of Origin: USA
Condition: New / Used
Availability: In Stock / Contact Us for Availability
Warranty: 12 Months
Product Overview
The Honeywell 51202329-312 is a Violet I/O Link 2 (IOL2) Drop Cable Pair designed for Honeywell Experion PKS Series C control systems.
The cable pair provides the communication connection between the IOL2 connectors on C300 IOTA assemblies and the top of the controller mounting channel, forming part of the cabling infrastructure between the C300 Controller and PM I/O equipment.
Honeywell’s Experion Control Hardware Planning Guide specifically identifies 51202329-312 as a Series C I/O Link 2 cable pair used for this connection. The documentation also specifies that redundant pairs of cables are used in the I/O Link architecture when connecting C300 controllers with PM I/O.
Main Function
The primary function of the Honeywell 51202329-312 is to provide a reliable physical communication path for the IOL2 network within a Series C Experion PKS installation.
A simplified connection can be represented as:
C300 Controller / IOTA → 51202329-312 IOL2 Cable Pair → Series C Cabling → PM I/O
The cable does not perform signal processing or control logic itself. Instead, it provides the physical interconnection required for communication between Honeywell control and I/O hardware.
This makes the 51202329-312 an important infrastructure component for maintaining reliable communication between the controller and distributed I/O equipment.
Experion PKS Series C Integration
The 51202329-312 belongs to the Series C I/O Link 2 (IOL2) Cable Assemblies section of Honeywell’s Experion PKS control hardware documentation.
Honeywell’s documentation explains that I/O Link 2 should be used as the default connection for PM I/O to the C300 Controller, and specifies violet-jacketed cables for IOL2 applications.
Within this architecture, the 51202329-312 acts as a Series C drop cable pair connected to the IOL2 connectors of the C300 IOTA assemblies.
The correct cable type is therefore important when maintaining an existing Series C cabinet because different cable assemblies within the 51202329 family have different drop counts, cable lengths and installation purposes.
Cable Pair Configuration
The 51202329-312 is supplied as a cable pair rather than a single cable.
Honeywell documentation identifies it as:
Cable pair consisting of one each of the preceding two cables
These two cables are:
- 51202329-310 – Violet Drop Cable, 3 drops, for a channel containing two CF9s plus two C300s plus one 6-inch IOTA, yellow label
- 51202329-311 – Violet Drop Cable, 3 drops, for the same configuration, green label
Therefore:
51202329-310 + 51202329-311 = 51202329-312
This A/B pair arrangement is an important identification feature when sourcing the complete cable assembly.
Violet I/O Link 2 Cabling
Honeywell uses different cable colors and part-number groups for different I/O Link arrangements.
The violet cable family is associated with I/O Link 2 (IOL2) in the Series C architecture.
This is different from the gray cable family used for other Series C cabling configurations.
The use of the correct violet IOL2 cable is therefore important when replacing a damaged or missing cable in an existing Experion PKS cabinet.
C300 Controller Connection
The C300 Controller is a central component of Honeywell Experion PKS control architecture.
The 51202329-312 cable pair connects to the IOL2 connectors on the C300 IOTA(s) and routes the communication path toward the PM I/O installation.
According to Honeywell’s planning documentation, the first cable pair connects to the IOL2 connectors of the C300 IOTA(s) and extends from there to the top of the IOTA channel. A suitable Series C extension cable pair can then be used to continue the connection toward the cabinet containing the PM I/O.
This makes the 51202329-312 a specific component within the overall Experion PKS cabinet cabling architecture rather than a generic communication cable.
PM I/O Connectivity
One of the primary applications of the 51202329-312 is the connection between the C300 controller side and PM I/O.
PM I/O provides process input and output functions within the Experion control architecture. Reliable communication between the controller and I/O subsystem is therefore essential for normal process-control operation.
A typical architecture can be represented as:
Experion PKS Controller
↓
C300 IOTA / IOL2 Interface
↓
Honeywell 51202329-312
↓
Series C Extension Cable
↓
PM I/O
This architecture allows the control system to communicate with distributed process I/O while maintaining the structured cabling arrangement specified by Honeywell.
Redundant Cable Architecture
Honeywell’s documentation specifies the use of redundant pairs of three cables for connecting a non-redundant C300 or a redundant pair of C300 controllers to one or more PM I/O files.
The first cable pair is the Series C Drop Cable Pair, part number 51202329-312. A second appropriate cable pair can then be used as required by the cabinet configuration, together with a PM Adapter cable.
This architecture supports the communication and redundancy requirements of process-control installations where maintaining reliable I/O connectivity is important.
Typical Applications
The Honeywell 51202329-312 is primarily associated with Honeywell Experion PKS Series C control installations.
Typical applications include:
- Process control systems
- Distributed control systems
- C300 controller installations
- PM I/O systems
- Oil and gas facilities
- Petrochemical plants
- Chemical processing plants
- Power generation facilities
- Refining applications
- Industrial process automation
Because the 51202329-312 is a system-specific I/O Link cable pair, its main value is in maintaining existing Honeywell Experion installations rather than serving as a general-purpose industrial communication cable.
Related Honeywell Cable Assemblies
The Honeywell 51202329 family contains a wide range of Series C system cables.
Related I/O Link 2 cable assemblies include:
- 51202329-310 / 51202329-311 / 51202329-312 – Violet Drop Cable Pair for specific C300/IOTA configuration
- 51202329-410 / 51202329-411 / 51202329-412 – Violet Drop Cable Pair, 3 drops, 12-inch pitch
- 51202329-210 / 51202329-211 / 51202329-212 – Violet Drop Cable Pair, 4 drops, 9-inch pitch
- 51202329-110 / 51202329-111 / 51202329-112 – Violet Drop Cable Pair, 6 drops, 6-inch pitch
- 51202329-510 / 51202329-511 / 51202329-512 – Violet Header Cable Pair
- 51202329-710 / 51202329-711 / 51202329-712 – Violet Extension Cable Pair, 9 inches
- 51202329-714 / 51202329-715 / 51202329-716 – Violet Extension Cable Pair, 25 inches
- 51202329-730 / 51202329-731 / 51202329-732 – Violet Extension Cable Pair, 36 inches
- 51202329-734 / 51202329-735 / 51202329-736 – Violet Extension Cable Pair, 48 inches
Honeywell’s Series C hardware documentation distinguishes these cable assemblies according to their function, number of drops and cable length.
Replacement Considerations
When sourcing a replacement for Honeywell 51202329-312, the complete part number should be checked carefully.
Important verification points include:
- Complete part number: 51202329-312
- Cable family: Violet IOL2
- Cable configuration
- Number of drops
- Yellow / green A-B cable pair
- C300 IOTA configuration
- PM I/O installation
- Existing Series C cabinet arrangement
- Connector condition
- Cable jacket and insulation condition
It is particularly important not to substitute the 51202329-312 with another violet cable pair simply because the connectors appear similar.
For example, 51202329-412 is also a violet IOL2 cable pair, but it is specified for a different 3-drop, 12-inch pitch configuration. Likewise, 51202329-212 is a 4-drop, 9-inch pitch cable pair.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Model / Part Number | 51202329-312 |
| Product Type | I/O Link Cable Pair |
| Cable Family | Series C I/O Link 2 |
| Cable Color | Violet |
| Configuration | 3-Drop Cable Pair |
| Cable Pair | 51202329-310 + 51202329-311 |
| Cable A | Yellow Label |
| Cable B | Green Label |
| Primary Connection | C300 IOTA / IOL2 |
| System Application | Experion PKS Series C |
| I/O Application | PM I/O |
| Installation | Series C Control Cabinet |
| Communication | I/O Link 2 |
The cable configuration and relationship between 51202329-310, 51202329-311 and 51202329-312 are documented in Honeywell’s Experion hardware planning material.
Physical Inspection
As a passive cable assembly, the condition of the 51202329-312 should be evaluated primarily through visual and continuity inspection.
Recommended checks include:
- Part-number verification
- Cable-pair verification
- Yellow/green label inspection
- Connector inspection
- Cable jacket inspection
- Pin and contact inspection
- Continuity testing
- Insulation condition
- Signs of bending or mechanical damage
- Signs of corrosion or contamination
For used spare parts, continuity and connector inspection are particularly useful before shipment.
Why the Correct Cable Matters
In a large Experion PKS installation, communication cables may appear physically similar while serving different cabinet positions or I/O configurations.
Using the correct Honeywell part number helps reduce the risk of:
- Incorrect cable routing
- Insufficient cable drops
- Incorrect cabinet installation
- Communication problems
- Unnecessary rewiring
- Extended system downtime
For maintenance teams, replacing the existing 51202329-312 with the same part number is generally preferable when maintaining the original Series C architecture.
Product Summary
The Honeywell 51202329-312 is a Violet Series C I/O Link 2 (IOL2) Drop Cable Pair used in Honeywell Experion PKS control systems.
It is specifically associated with the connection from the IOL2 connectors of C300 IOTA assemblies toward the PM I/O system. Honeywell documentation identifies the part as a cable pair consisting of 51202329-310 and 51202329-311, making the complete 51202329-312 assembly an important spare part for maintaining existing Series C installations.
For industrial automation maintenance and retrofit projects, the 51202329-312 is a useful replacement component when restoring communication infrastructure within an existing Honeywell Experion PKS system.
Related Tags
Type: I/O Link Cable Pair, Drop Cable, Communication Cable, Control System Cable
Function: IOL2 Communication, C300 Connectivity, PM I/O Connection, Controller-to-I/O Communication
System: Honeywell Experion PKS, Series C, C300 Controller, PM I/O, I/O Link 2
Field: Process Automation, Oil & Gas, Petrochemical, Chemical, Power Generation
Procurement: Honeywell Spare Parts, Experion PKS Spare Parts, 51202329-312 Replacement, Honeywell I/O Link Cable, C300 Spare Parts
