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 |
|---|---|
| Part Number | IS220PDIOH1B |
| Platform | Mark VIe Speedtronic |
| Channel Configuration | 16 discrete inputs, 16 discrete outputs |
| Nominal Supply Voltage | 28 VDC |
| Max Output Contact Voltage | 32 VDC |
| Communication | Dual redundant 100 Mbps Ethernet IONet |
| Operating Temperature | -30°C to +65°C |
| Matching Terminal Boards | TDBS, TDBT |
| PCB Coating | Conformal coated |
| Redundancy Modes | Simplex, Duplex, TMR |
| Dimensions | 4.5 in × 3.5 in × 2.25 in |
| Hazardous Area Rating | Class I Division 2, ATEX Zone 2 |
Product Introduction
GE IS220PDIOH1B is a Mark VIe discrete I/O pack built to bridge the main controller and field discrete hardware. It captures dry contact status from switches and relays, then executes digital output commands to actuators.
This pack supports TMR voting for turbine protection racks. The conformal coating protects the circuit board from humidity and airborne contaminants common in power house environments.
IS220PDIOH1B
IS220PDIOH1B
IS220PDIOH1B
IS220PDIOH1B
IS220PDIOH1B
Application Scenarios & Field Experience
Many combined cycle plants face forced trips when a single I/O channel fails on critical interlock logic. This module’s dual Ethernet and TMR capability reduces single-point communication failure risk for safety-critical discrete loops.
- Power generation: Gas turbine safety interlock panels, reading limit switches and driving trip relays
- Power generation: Steam turbine auxiliary control, boiler interlock valve solenoid actuation
- Petrochemical: Compressor safety shutdown logic for high-pressure process trains
- Industrial process: Heavy machinery emergency stop and alarm output control
In my field experience, a 2×1 combined cycle unit had intermittent loss of discrete alarm signals after years of thermal cycling. The existing IS220PDIOH1B had cracked solder joints on the Ethernet connector. Swapping in a tested spare restored all contact input and valve output channels; the plant avoided a planned outage extension.
Standard Operating Procedure (SOP) for Quality Control
- Visual & Origin Inspection: Check OEM markings, connector integrity, conformal coating condition, anti-counterfeit seal review.
- Live Rig Testing: Apply 28VDC supply, run power-on self-test, validate all 16DI and 16DO channels, verify redundant Ethernet handshakes.
- Firmware Verification: Record firmware revision, confirm compatibility with target Mark VIe controller firmware.
- ESD-Safe Packaging: Place module in anti-static bag, foam cushioning, sealed carton with ESD warning labels.
Frequently Asked Questions
Q1: Is GE IS220PDIOH1B compatible with older Mark VI (non-Vie) systems? A: No. It is designed exclusively for Mark VIe IONet architecture. Direct installation on legacy Mark VI racks will not work without full platform migration.
Q2: What warranty do you provide for this module? A: All units carry a 12-month warranty. Warranty covers hardware defects found during normal operation; physical damage from improper installation is excluded.
Q3: What is the typical stock and shipping lead time? A: Stock varies. In-stock units can ship quickly. Non-stock inventory requires extended procurement lead time. Confirm availability before finalizing your project timeline.
Q4: Can firmware mismatches cause communication faults with the Mark VIe controller? A: Yes. Firmware revision must match the controller’s supported revision set. Always cross-check firmware versions before loading the module into the rack.
Q5: Can I hot-swap this I/O pack while the turbine is online? A: Hot swap is only allowed in fully redundant TMR or duplex configurations. Do not hot-swap simplex racks; this will trigger a system trip. Follow site lockout/tagout procedures.
