Product Introduction
When upgrading legacy discrete I/O systems, the GE IC200MDD840 Discrete I/O Module offers a reliable, high-density solution. Part of the VersaMax I/O series from GE Intelligent Platforms (now under Emerson Automation), this module combines 20 positive-logic 24 VDC inputs with 12 Form A relay outputs rated at 2.0 A. Designed to replace older, bulkier modules, the IC200MDD840 simplifies wiring and reduces panel space while maintaining robust performance.
Technical Specifications Breakdown
Key specifications of the GE IC200MDD840 ensure compatibility with common industrial controls:
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Input Voltage: 24 VDC nominal (range 0–30 VDC)
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On-State Current: 2.0 to 5.5 mA
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Off-State Current: 0–0.5 mA
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Output Rating: 2.0 A per point for resistive loads (5–265 VAC or 5–30 VDC); 0.2 A for 31–125 VDC
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Backplane Current Draw: 375 mA maximum
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Dimensions: 110 mm x 66.8 mm x 50 mm
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LED Indicators: Individual channel and OK LED
Relay outputs are arranged in two groups of six, each group isolated from the other. Inputs are split into two groups of ten, with configurable digital filter times (0, 0.7, or 1.0 ms) to eliminate false signals in noisy environments.
Installation & Setup Guidance
Mount the GE IC200MDD840 module onto a VersaMax backplane (sold separately). Connect external power to the output loads as the module draws power from the backplane only. For input wiring, use sourcing/positive-logic wiring; the module returns current on common. Ensure the filter time is set appropriately via software to match your application's electrical noise level. Verify that the total output load per group does not exceed 8.0 A to avoid overheating.
Compatibility & Integration
The GE IC200MDD840 integrates seamlessly with VersaMax NIUs and CPUs, handling I/O processing via the backplane bus. It works with GE Fanuc PLC systems that support the VersaMax I/O architecture. The module does not support channel-to-channel isolation, so plan wiring accordingly. It can be combined with other VersaMax modules (analog, discrete, special function) in the same rack for a complete automation solution.
Troubleshooting & Common Issues
If relay outputs fail to energize, check the external power supply (0–125 VDC or 0–265 VAC) and ensure the load is within the 10 mA minimum. For input reading errors, adjust the filter time to mitigate noise. A steady OK LED indicates normal operation; a flashing or off LED suggests backplane communication failure or power loss. Always verify the backplane current draw does not exceed 375 mA to prevent module shutdown.
Selection Guide & Purchasing Advice
Before purchasing the GE IC200MDD840, confirm your system's backplane type (VersaMax standard or expansion) and power requirements. This module replaces older 16-point or 24-point I/O combinations with a compact 32-point design. For genuine, tested units, source from trusted suppliers like UBEST Automation (ubest101.myshopify.com) to ensure reliable operation and warranty support.