Honeywell FS-IOBUS-CPX12 Extension Cable

Configured for signal path extension in FS-IOBUS architectures, the Honeywell FS-IOBUS-CPX12 (FS-IOBUS-CPX12 Industrial Extension Cable) provides direct physical execution of bus-level data transmission between controllers and I/O nodes.

Hardware Specifications

Industrial Network and Connectivity Characteristics

• Protocol conversion latencies: The cable architecture is optimized to minimize propagation delay across the FS-IOBUS link. Maintaining the integrity of the shielded twisted-pair geometry ensures that protocol-specific timing windows are not violated, which is necessary for deterministic network performance.

• DIN-rail mounting stability: While the cable itself does not mount to a rail, the physical design is optimized for routing alongside DIN-rail mounted CPX12 modules. The bend radius is engineered to maintain cable impedance stability when routed within dense cabinet structures.

• Surge voltage protection limits: The cable’s industrial-grade shielding acts as a barrier against transient electrical noise. When properly bonded to the cabinet’s equipotential ground, it prevents surge voltages from exceeding the transceiver input ratings of the connected CPX12 modules.

• Intrinsic safety (Ex i) barriers: In hazardous area installations, this cable serves as the interconnect for signal paths that may be routed through intrinsic safety barriers. The cable construction meets the necessary capacitance and inductance limits required to maintain the safety rating of the connected I/O circuits.

Frequently Asked Questions

Q: Does the cable length impact the maximum bus communication speed?

A: Yes. The FS-IOBUS operates with defined timing constraints. Exceeding standard lengths without verifying the bus load and propagation delay can result in synchronization errors. Always consult the system design manual before utilizing custom lengths.

Q: Is the cable shielding grounded at both ends?

A: In standard industrial configurations, the cable shield should be bonded to the equipment chassis at the point of entry. Ensure that no potential differences exist between the two ends to prevent ground loop currents from flowing through the shield.

Field Installation Guidelines

• Mounting: Secure the cable using non-conductive cable ties to avoid creating current loops. Maintain a minimum bend radius of 5 times the cable diameter to prevent mechanical deformation of the internal shielding and dielectric materials.

• Grounding: Terminate the shield at the module connector’s designated grounding pin. A low-impedance ground connection is mandatory to maintain the cable’s EMI suppression effectiveness.

• Wiring: Route the FS-IOBUS extension away from high-voltage AC power cabling and VFD motor leads. A physical separation of at least 150 mm is recommended to eliminate inductive coupling and ensure signal integrity.