Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Input Channels | 24 optically isolated discrete contact inputs |
| SOE Timing Resolution | 1 millisecond |
| Nominal Onboard Power | 28 VDC, 18–32 VDC operating range |
| Communication | Dual 100 Mbps IONet Ethernet, redundant link support |
| Input Voltage Range | Configurable 24 / 48 / 125 VDC |
| Operating Temperature | -30°C to +65°C |
| Humidity Rating | 5% to 95%, non-condensing |
| Input Current | 2–20 mA per channel |
| Form Factor | Standard Mark VIe plug-in I/O pack |
| Certifications | UL Listed, CE marked, ATEX compliant |
| Required Terminal Board | IS200STCIS1A, IS200STCIS2A, IS400STCIS series |
Product Introduction
The GE IS220YDIAS1A is a plug-in discrete contact input I/O pack built for Mark VIe and Mark VIeS turbine control systems. It reads dry contact status and timestamps state changes for sequence-of-events logging. It pairs with dedicated terminal boards to separate field wiring from the processing pack.
This module carries local signal debounce and fault detection hardware. Dual IONet ports let it maintain redundant communication to the controller, so loss of one network path does not drop field contact data.
IS220YDIAS1A
IS220YDIAS1A
IS220YDIAS1A
IS220YDIAS1A
Application Scenarios & Field Experience
Part 1 (Narrative Paragraph)
Turbine and balance-of-plant systems rely on precise event time stamping during trips. Standard discrete inputs lack microsecond or millisecond-level timestamping, which leaves engineers unable to determine the exact order of protective relay and contact actuation. The IS220YDIAS1A captures every contact transition at 1ms resolution, giving forensic data after shutdown events.
Part 2 (Numbered List)
- Gas turbine power generation: Monitor lube oil pressure switches, vibration contact relays, and emergency trip contacts in combined cycle plants.
- Steam turbine BOP control: Capture valve position limit switches and pump status contacts for boiler auxiliary systems.
- Petrochemical compressor control: Track safety interlock contacts for large centrifugal compressors in refining facilities.
- District energy cogeneration: Log auxiliary equipment contact states for routine alarm and trip analysis.
Part 3 (Short Field Story)
A combined-cycle plant experienced an unplanned turbine trip at night. The existing I/O pack had corrupted SOE timestamps, and the maintenance team could not confirm which contact tripped first. After swapping to a tested IS220YDIAS1A, the next minor interlock event logged clean 1ms timestamps. Engineers identified a sticking pressure switch within 2 hours, avoiding a repeat full turbine shutdown.
Standard Operating Procedure (SOP) for Quality Control
- Visual & Origin Inspection: Check OEM labeling, casing integrity, factory seals, and serial number traceability. Run anti-counterfeit checks against OEM part markings.
- Live Rig Testing: Mount the module to matching terminal hardware, apply 28VDC power, and trigger power-on self-test. Verify IONet link establishment and channel response to contact closure signals.
- Firmware Verification: Read and record the installed firmware revision. Document firmware version in the test report for system compatibility review.
- Channel Functional Test: Cycle all 24 input channels, validate contact state detection and confirm 1ms SOE timestamp capture.
- ESD-Safe Packaging: Place the module inside static shielding bag, pack with foam inserts, and seal in rigid carton. Attach test certificate to the outside packaging.
Frequently Asked Questions (FAQ)
Q1: What terminal boards are compatible with the IS220YDIAS1A? A: It requires IS200STCIS1A, IS200STCIS2A, or IS400STCIS series terminal boards. It cannot operate standalone without the matching terminal board assembly. Verify terminal board revision against your ControlST project before ordering.
Q2: What warranty is included for this module? A: We offer a 12-month warranty. Warranty covers hardware defects, not damage from improper installation, overvoltage field wiring, or incorrect firmware flashing.
Q3: Do you hold stock of IS220YDIAS1A and what is the shipping timeline? A: We maintain limited inventory of new surplus and refurbished units. Most units ship within 1–3 business days once QC documentation is finalized. Confirm stock status through our website before finalizing your procurement order.
Q4: Can firmware mismatches cause communication failures on Mark VIe systems? A: Yes. Firmware revision on the I/O pack must match the controller’s ControlST revision. Mismatched firmware may trigger intermittent IONet drops or missing SOE data. We provide firmware version records with every tested unit.
Q5: Can I hot-swap this I/O pack while the turbine control system remains online? A: Do not hot-swap without active system redundancy. Non-redundant rack hot swap can trigger system trip. If your architecture uses redundant IONet and redundant controllers, follow GE’s Mark VIe hot swap procedure.
