Quick Sizing & Sourcing Snapshot
- Manufacturer: GE Fanuc (Emerson Machine Automation)
- Part Number: IC670CHS001
- System Platform: GE Fanuc Field Control I/O System
- Hardware Type: Barrier-Style I/O Terminal Base (Carrier)
- Architectural Role: Serves as the field-wiring interface and mechanical mounting base for up to two Field Control I/O modules (e.g., IC670ALGxxx, IC670MDLxxx), distributing 24V DC power and backplane communication signals.
- Key Specifications: 37 Terminals, 2 I/O Modules, #14-22 AWG, DIN Rail Mount.
System Architecture & Operational Principle
The is a passive, yet functional, hardware component operating at Purdue Level 1 (Field I/O Interface). It is not a rack in the traditional sense (like an IC697CHS771), but rather a Terminal Base or “Carrier” that mounts on a DIN rail or panel. It bridges the gap between the rugged industrial field wiring and the sensitive electronics of the I/O modules.
Physically, it is a rectangular block with barrier-style screw terminals on top and a male backplane connector on the back (hidden when mounted).
Upstream, it receives 24V DC power (landed on Terminals A and B) and field signals (wired to the 35 I/O terminals). It also connects to the Genius Bus network via a GBI002 (Bus Interface Unit) or daisy-chains to adjacent bases using the IC670CBL001 cable between the backplane connectors.
Internal Function, it distributes the 24V DC power (via the backplane pins) to the I/O modules plugged into it and routes the field terminal wiring directly to the module’s pins via the backplane.
Downstream, you plug up to two I/O modules (e.g., one Analog Input and one Discrete Output) vertically onto the top of the CHS001. The modules snap in, keyed to prevent incorrect insertion. The CHS001 provides the backplane communication path between the modules and the GBI002/CPU. It is designed for Hot-Swap: you can remove a faulty I/O module and plug in a new one without removing the field wires from the CHS001 terminals or powering down the station (provided the GBI002 firmware supports it).
Core Technical Specifications
- Terminal Count: 37 Screw Terminals (Barrier Style)
- Module Capacity: 2 I/O Modules (Max, plugged vertically on top)
- Wire Size: #14 to #22 AWG (Copper, Solid or Stranded)
- Wire Insulation: 90°C Rating (Min)
- Torque: 8 in-lb (Recommended Screw Terminal Tightening)
- Power Terminals: A and B (For 24V DC Input)
- Ground Wire: #14 AWG (Max length 4 inches / 10cm recommended)
- Mounting: 35mm DIN Rail or Panel Mount (Horizontal Orientation)
- Backplane I/F: Proprietary Connector (Links to adjacent CHS001 via IC670CBL001)
- Hot-Swap: Yes (Module Level, requires GBI002 firmware >= V2.1)
- Operating Temp: -20°C to +70°C (Typical)
- Protection: IP20 (Finger Safe / Dust Protected)
Customer Value & Operational Benefits
Wire-Once Maintenance (Hot-Swap)
The standout value is Module Replacement without Rewiring. In a traditional rack, if an analog card dies, you unterminate 32 wires, pull the card, insert new, re-terminate 32 wires. With the CHS001, the wires stay on the base. You undo two screws holding the I/O module, lift it off, pop the new one on, tighten screws. This cuts MTTR from 45 minutes to 3 minutes for I/O failures, which is critical in 24/7 processes like paper machines or ammonia refrigeration.
High-Density Decentralization
You get 2 Modules and 37 Terminals in a footprint roughly 4 inches wide. You can mix an Analog Input (16 ch) and a Discrete Output (16 ch) on one base. This allows you to tailor the I/O exactly to the valve manifold or motor starter bucket you are mounting it next to. You avoid “wasting slots” (e.g., a 16pt card with only 3 used) that happens in fixed rack I/O, optimizing I/O point cost per dollar.
Backplane Simplicity
The embedded backplane connector means you don’t run individual 24V DC or Comms wires to every module. You land 24V once at Terminals A/B, and it powers both modules on that base. You daisy-chain the IC670CBL001 cable from base to base. This reduces field wiring complexity by 40% in large distributed I/O skids (e.g., water treatment plants).
