The GE IC670MDL640 is a high-density discrete input module from the GE Fanuc Field Control / PACSystems family. It is designed to acquire and process digital signals from field devices such as switches, sensors, relays, and interlocks, providing stable and noise-resistant input data to PLC or control processors.
Engineered for industrial automation environments, this module is widely used in manufacturing, energy, and process control systems where fast, accurate, and electrically isolated signal acquisition is required.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | GE Fanuc (now Emerson automation legacy) |
| Model | IC670MDL640 |
| Series | Field Control / Genius I/O |
| Module Type | Discrete Digital Input Module |
| Input Channels | 16 points (single group) |
| Input Voltage Range | 0–30 VDC (24 VDC nominal) |
| Logic Types | Positive or negative logic supported |
| Input Current | ~7.5 mA per point @ 24 VDC |
| ON State Current | 3–8 mA |
| OFF State Current | 0–1.5 mA |
| Isolation | 250 VAC continuous / 1500 VAC (1 min) |
| Response Time | 6 ms typical / 10 ms max |
| Indicator LEDs | One per channel + power LED |
| Backplane Current Draw | ~75 mA typical (83 mA max) |
| Input Impedance | ~3 kΩ |
| Operating Temperature | -40°C to +70°C |
| Dimensions | ~100 × 100 × 50 mm |
| Weight | ~0.2–0.4 kg |
The module is known for its strong electrical isolation and fast response time, making it suitable for harsh industrial control environments.
System Role & Functional Behavior
The IC670MDL640 functions as a digital signal acquisition layer within PLC and automation systems:
- Receives 24VDC discrete signals from field devices
- Converts input states into digital data for PLC processing
- Supports both sourcing (positive) and sinking (negative) logic
- Provides electrical isolation between field wiring and control electronics
- Uses LED indicators for real-time channel status diagnostics
- Ensures stable operation in electrically noisy industrial environments
It is commonly used as the front-end interface in distributed I/O architectures.
Recommended Related Modules
To build a complete GE Field Control system, IC670MDL640 is often paired with:
- IC670MDL740 Digital Output Module
- IC670ALG230 Analog Input Module
- IC670GBI001 Genius Bus Interface Unit
- IC670PBI001 Power Supply Module
- IC670CHS001 I/O Base Unit
Together, these modules provide full digital, analog, and communication capability.
Common GE PLC System Modules
Frequently used alongside this module:
- IC693 / IC695 PACSystems CPU modules
- IC670ALG series analog modules
- IC670MDL640 input variants
- GE VersaMax I/O modules
- Genius I/O communication modules
Each supports different layers of industrial automation control.
