Description

Honeywell FS-IOBUS-CPX12 I/O Bus Interconnection Cable

The Honeywell FS-IOBUS-CPX12, also cataloged as the FS-IOBUS-CPX12 I/O Bus Interconnection Cable, operates as a dedicated hardware component for controller-to-extension chassis data communication within Honeywell Fail Safe Controller (FSC) and Safety Manager systems.

Hardware Specifications

Parameter	Specification
Model	FS-IOBUS-CPX12
Brand	Honeywell
Product Type	I/O Bus Interconnection Cables
System Compatibility	Honeywell FSC and Safety Manager platforms
Primary Function	Controller Chassis (CPCHAS) to Extension I/O Chassis (IOCHAS) interconnection
Connector Type	Dual 34-pole female latch connectors
Cable Length	Approx. 3.4 m to 4.2 m
Characteristic Impedance	100 Ohm +/- 10%
Maximum Data Rate	100 Mbps
Propagation Delay	Less than 5.0 ns/m typical
Conductor Gauge	24 AWG to 26 AWG
Operating Temp	-20 deg C to +85 deg C
Low Temperature Option	PUR jacket option supports down to -40 deg C
Weight	Approx. 0.23 kg to 1.0 kg including shielding and packaging
Dimensions	Cable assembly; dimensions vary by cable routing and revision
Power Consumption	Passive cable assembly; no external power consumption
Origin	USA
Certifications	UL, CSA, VDE

Honeywell DCS and Safety Communication Interface

The FS-IOBUS-CPX12 provides physical signal transmission between controller and remote I/O chassis assemblies. The cable assembly maintains bus signal integrity through controlled impedance construction and shielded conductors.

In addition, the cable supports Honeywell FSC and Safety Manager cabinet expansion architectures where multiple I/O chassis require direct bus communication. The dual 34-pole latch connectors secure the electrical interface and reduce accidental disconnection during cabinet operation.

The FS-IOBUS-CPX12 installation follows Honeywell safety system wiring practices. Therefore, technicians must maintain proper cable routing, grounding, and separation from high-energy power conductors.

Channel Isolation and Process Control Signal Integrity

Honeywell safety and process control platforms require stable field communication paths between controller assemblies and I/O modules. The FS-IOBUS-CPX12 uses a shielded cable structure to reduce external electromagnetic interference during signal transmission.

Furthermore, Honeywell I/O architectures commonly integrate channel-to-channel isolation, 4-20 mA HART loop interfaces, and FOUNDATION Fieldbus or Profibus PA communication modules. The cable assembly itself provides the physical bus connection required for chassis-level communication rather than field instrument signal conversion.

Frequently Asked Questions

Q: What systems can use the Honeywell FS-IOBUS-CPX12 cable assembly?
A: The FS-IOBUS-CPX12 supports Honeywell FSC and Safety Manager systems for CPCHAS to IOCHAS chassis interconnection.

Q: Does the FS-IOBUS-CPX12 require external power?
A: No. The FS-IOBUS-CPX12 is a passive communication cable assembly and does not consume operating power.

Q: What installation factors affect FS-IOBUS-CPX12 signal performance?
A: Proper cable routing, shield grounding, connector locking, and separation from high-voltage wiring affect communication signal quality.

Field Installation Guidelines

• Verify the cable part number before installation and confirm compatibility with the target controller and I/O chassis configuration.
• Install the cable between the designated CPCHAS controller chassis port and IOCHAS extension chassis interface.
• Ensure both 34-pole latch connectors fully engage before system power-up.
• Route the cable away from high-voltage power lines, motor cables, and sources of electromagnetic interference.
• Maintain the original shielding structure and connect shield grounding according to Honeywell cabinet installation requirements.
• Avoid sharp bending, excessive pulling force, or mechanical stress on the cable assembly.
• Inspect connectors and cable jackets for physical damage before commissioning.

Specifications

• Brand: Honeywell

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems