The GE Fanuc IC670CHS002F, also cataloged as the IC670CHS002F I/O Terminal Block, operates as a dedicated hardware component for module mounting, backplane signal distribution, and field wiring termination within Field Control I/O platforms.

Hardware Specifications

PLC/DCS Backplane Communication and I/O Density Scaling

The IC670CHS002F serves as the mechanical and electrical interface for the Field Control I/O series, supporting two modules per base unit. The backplane bus communication velocity is maintained through the integral bus connectors, allowing for scalable I/O density within the control cabinet. The architecture facilitates hot-insertion and removal of I/O modules, provided the Bus Interface Unit (BIU) maintains firmware compatibility (version 2.1 or later). This module utilizes three isolated groups of common terminals to segregate field power and signal references, preventing ground loops and signal interference across the backplane.

Frequently Asked Questions

Q: Does the IC670CHS002F support hot-swapping of modules?

A: Yes, the terminal block supports module removal and insertion without disrupting field wiring. However, hot-insertion requires the system BIU to be at firmware version 2.1 or later to maintain signal integrity during transition.

Q: What is the required torque for field wiring terminations?

A: Field connections should be tightened to a torque specification of 4.5 in/lbs to ensure secure contact and vibration resistance.

Q: Can this terminal block be used for daisy-chaining power?

A: The block features three internally connected common terminal groups (A, B, and E). Groups A and B are intended for power distribution, while Group E provides five isolated common terminals for signal referencing.

Field Installation Guidelines

• DIN Rail Mounting: Align the module onto the standard DIN rail and ensure the spring-loaded latches are fully engaged to provide mechanical stability in high-vibration environments.
• Wiring Requirements: Utilize copper wire rated for 90 deg C. For AWG #14, use a single conductor; for AWG #18 through AWG #22, up to two conductors per terminal are permitted.
• Grounding and Shielding: Maintain the isolation integrity of the E Group terminals. Ensure field signal shields are terminated at appropriate grounding bars away from high-power distribution lines to minimize electromagnetic noise.
• Environmental Considerations: Ensure the installation site remains free of corrosive agents and maintains adequate airflow to prevent heat accumulation, even though the terminal block is a passive component.