GE Fanuc Field Control IC670CHS003 Terminal Block Connector Base (Barrier Style)

Product Overview

The IC670CHS003 (IC670-CHS-003) is a high-density, barrier-style terminal block connector base designed for the GE Fanuc Field Control I/O system. This base acts as the physical mounting platform and electrical interface for Field Control I/O modules. Unlike the "box-style" (CHS002), the barrier-style CHS003 features open screw terminals with physical dividers, making it ideal for applications requiring larger wire gauges or ring/spade lug terminations. It facilitates "Permanent Wiring," allowing for the replacement of I/O modules without disconnecting field-side cables, which significantly reduces downtime during maintenance in mission-critical environments like power plants, water treatment facilities, and automated assembly lines.

Technical Configuration

The IC670CHS003 provides 36 terminals arranged in a barrier configuration. It mounts easily to a standard 35mm DIN rail or can be bolted directly to a sub-panel. The base contains the internal local bus that connects the I/O module to the Bus Interface Unit (BIU). The barrier design is specifically engineered to prevent accidental short circuits between adjacent terminals when using heavy-duty wiring. It supports both digital and analog modules, provided the module's pinout is compatible with a 36-point termination scheme.

Technical Specifications

Technical FAQs

What is the main difference between the CHS003 and the CHS002?

The IC670CHS003 is a barrier-style base (open terminals with dividers), whereas the CHS002 is a box-style base (wires inserted into a cage). The CHS003 is better suited for larger wires and use with crimp-on lugs, while the CHS002 is more compact for fine-gauge wiring.

Can I mix different module types on this base?

While the base is physically compatible with most Field Control modules, each base is dedicated to one specific module at a time. You must ensure the mechanical keying on the base matches the module you intend to insert to prevent hardware damage.

Is this base compatible with the newer Emerson/PACSystems Field Control?

Yes. The Field Control line was originally GE Fanuc and is now supported by Emerson. The IC670CHS003 remains the standard barrier base for the entire lifecycle of this I/O family.

Engineering & Installation Guide

• Termination Method: Use ring or spade lugs whenever possible with the CHS003 barrier base. This ensures maximum surface contact and prevents wire strands from escaping and causing a short circuit between the high-density terminals.

• Mechanical Keying: Before snapping the I/O module into the base, check the two plastic keying dials on the CHS003. These must be set to the specific code for your module (e.g., 16-pt Input, Relay Output, etc.). If the keys are not aligned, the module will not seat properly—do not force it.

• Bus Protection: When the base is mounted but a module is not yet installed, the internal bus connectors are exposed. Keep the protective plastic cover in place to prevent dust, moisture, or metallic debris from contaminating the gold-plated pins.