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Configured for discrete contact status monitoring in Mark VIe control system networks, the GE IS220YDIAS1AK (IS220YDIA Discrete Contact Input I/O Module) provides direct physical/electrical execution. The module digitizes optical and dry contact sensor inputs, applying onboard noise filtering and Sequence-of-Events (SOE) timestamping at the hardware layer for high-density discrete monitoring applications.

Hardware Specifications

Parameter Specification
Model IS220YDIAS1AK (IS220YDIA)
Brand GE (General Electric)
Origin USA
Weight 0.91 kg (2 lbs)
Dimensions 138 x 86 x 56 mm
Operating Temp -30 to 65 deg C
Power Consumption 18 to 32 VDC input supply
System Series Mark VIe
Onboard Memory 256 MB DDR SDRAM
Operating System QNX Neutrino
Software Compatibility ControlST V04.03.18C
Relative Humidity 5% to 95% (non-condensing)

Backplane Bus Communication Velocity and Firmware Flash Compatibility

Powered by the QNX Neutrino real-time operating system and 256 MB of DDR SDRAM, the IS220YDIAS1AK maintains deterministic backplane bus communication velocity across dual IONet Ethernet interfaces. Dedicated internal memory architectures ensure full firmware flash compatibility managed directly through GE ControlST system software, enabling online flash updates without disturbing adjacent I/O packs on the terminal board. This architecture optimizes I/O density scaling while preserving dynamic signal accuracy and channel diagnostics across simplex, dual, and triple modular redundant (TMR) network topologies.

Frequently Asked Questions

Q: What operating system and memory architecture power the IS220YDIAS1AK module?

A: The module operates on the QNX Neutrino real-time operating system utilizing 256 MB of onboard DDR SDRAM.

Q: What power supply range is required for module operation?

A: The module operates within an input supply range of 18 VDC to 32 VDC.

Q: How is firmware maintained on the IS220YDIAS1AK?

A: The module features firmware flash compatibility managed directly through GE ControlST V04.03.18C or compatible system software.

Field Installation Guidelines

  1. Isolate power to the field terminal board before attaching or removing the IS220YDIAS1AK I/O pack.
  2. Maintain electrostatic discharge (ESD) protection by using a grounded wrist strap attached to the metal cabinet frame.
  3. Align the module connectors with the matching terminal board interface, push firmly until fully seated, and secure the mechanical retaining screws to establish ground continuity.
  4. Connect Ethernet network lines to the designated IONet ports before energizing the 24 VDC power feed.
  5. Ensure field contact wiring shield drain wires are properly connected to the cabinet earth grounding bar to prevent signal interference.

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