GE IC670MDL730K
GE IC670MDL730K
GE IC670MDL730K
GE IC670MDL730K
GE IC670MDL730K

GE IC670MDL730K | 8-Point 24VDC Electronic Short-Circuit Protected Output Module

  • Model: IC670MDL730K (Series K, Rev K)
  • Alt. P/N: IC670MDL730-K, IC670MDL730 (base family)
  • Product Series: GE Fanuc Field Control (now Emerson)
  • Hardware Type: 8-Point Discrete DC Output Module
  • Key Feature: Electronic Short-Circuit Protection (ESCP) per output point
  • Primary Field Use: Drives 24VDC field devices such as solenoid valves, contactors, indicator lamps in distributed I/O stations
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Part number: GE IC670MDL730K
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Description

Hard-Numbers: Technical Specifications

  • Protocol Support: Genius Bus (IC670GBI002 Rev 2.10+) / Profibus Interface Unit
  • Port Count: 8 discrete outputs (single group, no group-to-group isolation)
  • Output Voltage: 17.5–29.5 VDC (user input 18–30 VDC, 24 VDC nominal)
  • Output Current: 2.0 A max continuous per point; 8 A max per module
  • Inrush Current: 10 A max per point for 10 ms
  • Overcurrent Trip Point: 2.25–2.75 A steady-state
  • Short Circuit Response: 20 A for 100 µs (electronic trip)
  • Response Time: 500 µs max on/off
  • Isolation Rating: 1500 VAC for 1 min (user terminal to logic/frame ground); 250 VAC continuous
  • Power Draw from BIU: 125 mA max
  • Leakage Current: 0.5 mA max at 30 VDC off-state
  • Output Voltage Drop: 0.5 V max
  • Operating Temperature: 0 to 60 °C (typical industrial; verify per site spec)
  • Storage Temperature: -40 to 85 °C
    GE IC670MDL730K

    GE IC670MDL730K

The Real-World Problem It Solves

This module eliminates burnt output cards and blown fuses in harsh industrial environments. Electronic short-circuit protection kills faults within 100 µs before they take down the whole I/O rack.
Where you’ll typically find it:
  • Process control skids: Driving 24VDC solenoid valves and actuators where field wiring runs long and damage risk is high.
  • ESD systems: Controlling shutdown valves where every millisecond counts and false trips are unacceptable.
  • Motor control centers: Operating contactors and indicator lights with clean, protected switching.
Bottom line: It saves the cabinet from wiring faults and keeps the process running when a single field device shorts.

Hardware Architecture & Under-the-Hood Logic

This module is a “dumb” output card. It has no onboard microprocessor. All intelligence lives in the Bus Interface Unit (BIU). The backplane supplies logic power; an external 24VDC source powers the field loads.
  1. The BIU sends serial output data to this module over the backplane.
  2. The module loops the data back to the BIU for verification (readback check).
  3. Once verified, a serial-to-parallel converter breaks the stream into 8 discrete output states.
  4. Each output drives an electronic switch with built-in overcurrent and short-circuit sensing.
  5. If a fault occurs, the output shuts down instantly (20A/100µs trip) and a yellow fault LED lights. The fault status is reported to the BIU for host PLC notification.
  6. An MOV (metal-oxide varistor) across the power supply line clamps transients; capacitors filter high-frequency noise.

Field Service Pitfalls: What Rookies Get Wrong

Ignoring the external power requirement
Rookies think the BIU powers the field loads. It does not. The BIU powers the module logic. You must provide a separate 18–30 VDC source to drive the outputs. If you don’t, nothing switches and you’ll chase ghosts.
  • Field Rule: Always verify 24VDC field supply is present at the terminal block before troubleshooting no-output conditions.
Running high-current loads on all points simultaneously
Eight outputs at 2A each equals 16A—but the module is rated for 8A max total. If you run full current on all eight channels, you will overheat the board and trip the module. De-rate your loads or split across multiple cards.
  • Quick Fix: Add up the steady-state load current per point. If it exceeds 8A, redistribute to another module.
Neglecting ground faults and isolation limits
There is no group-to-group isolation. All eight outputs share a common return. If you mix grounded and floating loads, or run high-noise VFD cables alongside your signal wires, you’ll get erratic behavior or phantom faults.
  • Field Rule: Keep field wiring separated from power cables and ensure consistent grounding practice across all points. Use shielded cable and ground the shield at one end.
Overlooking firmware compatibility
This module requires the Genius Bus Interface Unit (IC670GBI002) at revision 2.10 or later. Slower firmware may not support fault reporting or hot-swap correctly.
  • Quick Fix: Check BIU firmware version before installation. Upgrade if necessary.
    GE IC670MDL730K

    GE IC670MDL730K

Commercial Availability & Pricing Note

Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.

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