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The GE Fanuc IC200MDD844, also cataloged as the IC200MDD844 Discrete Mixed I/O Module, operates as a dedicated hardware component for discrete signal processing within VersaMax PLC backplane systems.

Hardware Specifications

Parameter Specification
Model IC200MDD844
Brand GE Fanuc Emerson
Origin USA / Various
Weight 0.17 kg (0.38 lbs)
Dimensions Standard VersaMax module footprint
Operating Temp 0 to 60 deg C
Power Consumption 70 mA at 5 VDC backplane
Total I/O Count 32 Points
Input Channels 16 points (2 groups of 8), positive logic
Input Voltage Range 0 to 30 VDC
Output Channels 16 points (1 group of 16), sourcing/positive logic
Output Voltage Range 10.2 to 30 VDC (0.5 A per point at 30 VDC)
On/Off Response Time 0.5 ms default (configurable filters: 0 ms, 1 ms, 7 ms)

Deterministic Network Integration & I/O Density Scaling

The module communicates over the VersaMax backplane bus at a operating potential of 5 VDC, transferring high-density input and output states directly into the CPU image table. Internal logic buffers field input channels using configurable hardware filtering options (0 ms, 1 ms, or 7 ms) to eliminate mechanical contact bounce and electromagnetic interference before transmitting deterministic data across the system bus. Firmware flash compatibility across the VersaMax family ensures direct alignment with system controllers, while solid-state switching execution maintains microsecond-level response times for critical output loads without physical contact wear.

Frequently Asked Questions

Q: What are the backplane power supply limitations when deploying this high-density I/O module?

A: The module draws 70 mA from the 5 VDC backplane supply rail. Total backplane load calculations must account for this draw alongside other attached VersaMax expansion modules to prevent voltage drop across the carrier logic bus.

Q: How do input filter settings affect field signal execution speed?

A: The default input filter time is 1 ms, providing standard signal stabilization. Disabling the filter achieves a rapid 0.5 ms response time, whereas selecting a 7 ms filter provides maximum noise rejection in high-interference industrial field environments.

Q: What hardware revision is required for 12 V negative logic output operation?

A: Standard IC200MDD844 hardware operates with 10.2 to 30 VDC positive/sourcing logic. Applications requiring 12 V negative logic output execution require upgrading the hardware module to revision IC200MDD844C or later.

Field Installation Guidelines

  • Carrier Terminal Connection: Insert the module firmly into its designated VersaMax snap-in I/O carrier until the retaining latch engages fully with the backplane bus structure.
  • Wiring Separation and Routing: Route field input wiring and 24 VDC output load lines in separate wiring channels away from high-voltage AC lines to prevent inductive coupling into digital channels.
  • Grounding and Shielding: Ensure the I/O carrier DIN rail is grounded to the cabinet protective earth terminal with low-impedance copper braid. Terminate external sensor cable shields at a single chassis grounding point near enclosure entry.

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