What Is the GE Fanuc IC670GBI002?
The GE Fanuc IC670GBI002 is a Bus Interface Unit (BUI) from the Field Control series. It acts as the header module of a Field I/O system. This unit manages the interface between a host PLC or computer and connected Field Control I/O modules over the Genius Bus. From a maintenance engineer’s viewpoint, this is the module that keeps a Field Control segment talking to the controller. When it fails, the whole I/O segment goes dark.
Please note: the IC670GBI002 is discontinued/obsolete. Verify current lifecycle status and availability with SpareTechPLC before ordering.
Technical Specifications That Matter on the Floor
The IC670GBI002 accepts a supply voltage range of 18-30 VDC. Inrush current reaches 15-50 Amps peak for 3 mS maximum. Power consumption is 16.8 Watts. The unit provides a power supply output of 6.5 VDC with a current output to modules of 1.4 A. Holdup time is 10 ms. These values tell a maintenance engineer two things. First, the 18-30 VDC range gives headroom for real-world supply sag. Second, the 1.4 A output to modules defines how many Field I/O modules you can support. The IC670GBI002 supports up to eight (8) Field Control I/O modules. It exchanges up to 128 bytes of input and 128 bytes of output data per scan. The rated MTBF is more than 183,000 hours. That figure supports long service intervals when the panel environment stays within limits.
Replacement and Upgrade Path
This unit is discontinued. For plants still running Field Control, the practical path is like-for-like replacement from surplus stock. The IC670GBI002 mounts on a terminal block for bus interface units. Power and single/dual communications cables terminate on that block. The module can be replaced without reconfiguring the I/O wiring. It also supports hot insertion and removal. That feature shortens downtime during a swap. Before you pull a unit, confirm the replacement matches the terminal base and the host firmware. Contact SpareTechPLC to confirm availability and replacement options.
Installation and Setup Notes
Mount the IC670GBI002 on a standard DIN rail. The DIN rail must connect to the grounding system. Use a rail material with good conductivity that resists oxidation and corrosion. The unit accepts a wire gauge of AWG #14. Keep power and communications wiring separated from high-noise sources where routing allows. The unit is resistant to noise levels typical in industrial applications when installed per recommended guidelines. The terminal block for the bus interface unit requires a maximum of 16 milliamps of current. It carries a rated MTBF of 600,000 hours.
Maintenance and Reliability
From a service perspective, the IC670GBI002 is a low-touch module. It has no moving parts. The main wear points sit outside the unit: terminal block connections, DIN rail contact, and the communications bus cabling. Inspect terminal torque and bus connectors on a scheduled basis. Check for corrosion on the DIN rail. Confirm the 24 VDC supply stays inside the 18-30 VDC range under load. The unit runs diagnostic tests on connected I/O modules and on itself. Diagnostic information goes to a host device or a handheld monitor. Use those diagnostics as your first troubleshooting step.
Compatibility and Integration
The IC670GBI002 supports the Genius Bus protocol. It works with programmable logic controllers from Series 90-30, Series 90-70, Series Six, and Series Five. It is compatible with Genius hand-held monitors version 4.6 or later. The unit supports Hot Standby CPU configurations. It also supports hot insertion and removal of modules when appropriate Field I/O module versions are installed. Confirm host firmware and monitor version before you deploy a replacement.
Selection Guide for Buyers
Before you buy an IC670GBI002, verify four things. First, confirm the host controller series and firmware. Second, confirm the terminal base part number matches. Third, confirm the Genius Bus cabling arrangement. Fourth, confirm the supply can deliver 18-30 VDC at the required load. The unit is intended for non-hazardous locations. It must be sufficiently protected if used in hazardous areas. It complies with UL, CE, and FCC rules. Because this part is discontinued, stock varies. SpareTechPLC is a reliable supplier for legacy GE Field Control parts. Ask for a test report and a clear return policy before purchase.
Frequently Asked Questions
Is the IC670GBI002 still in production?
No. The IC670GBI002 is discontinued/obsolete. Verify availability with SpareTechPLC before ordering.
Can I replace the IC670GBI002 without rewiring the I/O?
Yes. The module can be replaced without reconfiguring the I/O wiring. It also supports hot insertion and removal.
How many Field I/O modules can it support?
The IC670GBI002 supports up to eight (8) Field Control I/O modules.
What supply voltage does it need?
The supply voltage range is 18-30 VDC, with a nominal value of 24 VDC.
What protocol does it use?
It supports the Genius Bus protocol and works with Series 90-30, 90-70, Series Six, and Series Five controllers.
