Description
Product Introduction & Engineering Value
A digital output module is expected to do one job consistently—switch field devices without introducing unnecessary complexity. The GE IC670MDL740 accomplishes this by providing sixteen positive logic outputs capable of driving relays, solenoids, pilot lamps, and other 12/24 VDC field loads in a distributed Field Control system.
Installed alongside a Field Control Bus Interface Unit (BIU), the module minimizes cabinet wiring while providing fast output response, built-in diagnostics, and LED status indication for each channel. Its grouped architecture makes it well suited for machine automation, material handling, and process control applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE Fanuc |
| Model | IC670MDL740 |
| Product Family | Field Control |
| Module Type | Positive Logic (Sourcing) Discrete Output |
| Number of Outputs | 16 |
| Nominal User Voltage | 12/24 VDC |
| Operating Voltage | 10–30 VDC |
| Output Voltage Range | 9.2–29.5 VDC |
| Maximum Output Current | 0.5 A per point |
| Maximum Module Load | 4 A total |
| Inrush Capability | 2 A for 100 ms |
| Response Time | 200 μs maximum ON/OFF |
| Output Protection | Common 5 A slow-blow fuse |
| Indicators | Individual output LEDs and PWR LED |
| Isolation | 250 VAC continuous; 1500 VAC for one minute between user circuits and logic/frame ground |
Field Application & The “Trench” Experience
During an upgrade of a baggage conveyor system, technicians noticed that several pneumatic diverters occasionally failed to actuate during peak operation. Initial troubleshooting focused on the PLC, but the controller logic proved correct. The issue was traced to an aging output module with degraded switching performance under load. Replacing it with an IC670MDL740 restored reliable operation, and the maintenance team completed the repair without modifying the application software because the existing Field Control architecture remained unchanged.
Typical applications include:
- Conveyor diverter and sorter control
- Packaging machine solenoid valve operation
- Remote motor starter and contactor control
IC670MDL740
IC670MDL740
IC670MDL740
Transparency SOP: QA & Testing
Every New Surplus or Refurbished IC670MDL740 is inspected and tested before shipment.
- Verify the complete part number and hardware revision.
- Inspect connectors, PCB assemblies, and housing for mechanical damage.
- Verify all sixteen outputs using calibrated resistive loads.
- Test the common 5 A fuse and field power monitoring circuit.
- Confirm LED operation and output response timing.
- Validate communication through a compatible Field Control Bus Interface Unit.
- Package using anti-static materials and protective cushioning.
The Veteran’s Tech Trap Guide
⚠️ This Is a Sourcing Output Module
The IC670MDL740 provides positive logic (sourcing) outputs. It is not interchangeable with negative logic (sinking) output modules. Verify the field device wiring before installation to avoid commissioning delays.
⚠️ Don’t Ignore the External Field Power Supply
The Bus Interface Unit powers the module electronics, but an external 10–30 VDC supply is required to drive field loads. If the external voltage drops below approximately 9.8 VDC, the BIU reports a fault even though the module itself remains operational.
PRO TIP: If several outputs stop working simultaneously, inspect the common 5 A fuse before replacing the module. A blown fuse can disable the entire output group while leaving network communication and module status intact.
Dynamic FAQ
Q1. What is the primary function of the IC670MDL740?
The provides 16 positive logic (sourcing) digital outputs for controlling DC-powered field devices in a GE Field Control distributed I/O system.
Q2. What output voltage and current does the module support?
It operates from a 10–30 VDC field supply, supports 0.5 A per output point, and has a 4 A maximum total module load.
Q3. Does the module require an external power supply?
Yes. The module electronics receive power from the Bus Interface Unit, but the field outputs require an external 10–30 VDC supply to energize connected loads.
Q4. Which field devices can be connected?
The is commonly used with DC solenoid valves, relay coils, contactors, indicator lamps, and other 12/24 VDC discrete loads within the module’s current ratings.
Q5. How are refurbished modules tested?
Each module undergoes part number verification, visual inspection, output load testing, fuse verification, LED functionality checks, and communication testing using a compatible Field Control test system before shipment.
Q6. Are New Surplus units still available?
Yes. Because the GE Field Control platform remains installed in many industrial facilities, New Surplus and professionally Refurbished modules continue to be available through specialized automation suppliers, subject to inventory.
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