Description
Product Description
The GE IS220PDOAH1A is a Discrete Output (PDOA) I/O Pack designed for GE Mark VIe gas and steam turbine control systems. It provides the electrical interface between one or two I/O Ethernet networks and a compatible discrete output terminal board. The module can control up to 12 relays and receive terminal-board-specific feedback signals for output monitoring. It supports compatible TRLY and SRLY terminal board configurations, including electromagnetic and solid-state relay applications. Built-in diagnostics, status LEDs, and an output-enable function help keep relay outputs disabled during startup until the required internal checks are completed. This module is suitable for turbine sequencing, equipment interlocks, and other discrete control applications.
IS220PDOAH1A
Product Parameters and Datasheet
Brand: GE (General Electric)
Model: IS220PDOAH1A
Part Number: 336A4940CSP2
Related Code Supplied: 3364940CSP2; verify the nameplate for the complete ordering code
Series: Mark VIe / IS220 I/O Pack
Product Name: Discrete Output Pack
Product Type: Discrete Output I/O Module
Maximum Relay Control: 12 relays
Network Interface: Two RJ45 Ethernet ports for I/O network connectivity
Terminal Board Interface: DC-37 connector
Compatible Terminal Boards: Supported TRLY and SRLY discrete output terminal boards
Relay Types: Electromagnetic or solid-state, depending on the terminal board
Power Input: Nominal 28 VDC pack input; verify the exact system supply specification
Typical Power Consumption: Approximately 5.2 W; confirm against the applicable hardware documentation
Diagnostics: Power, Attention, Tx/Rx, and Link indicators
Output Protection: Outputs remain disabled during startup until internal checks are satisfied
Response Time: Approximately 6 ms, depending on the system configuration
Dimensions: Approximately 82.6 × 41.9 × 121.4 mm (3.25 × 1.65 × 4.78 in)
Weight: Approximately 0.5 kg; verify actual unit and packaging
Place of Manufacture: Verify the unit label
Country of Origin: Verify the unit label and shipping documents
Product Status: Confirm stock, condition, and revision with supplier
Discontinued: Current lifecycle status not confirmed
Recommended GE Mark VIe Models
1. IS220PDIAH1A – Discrete input I/O pack for compatible Mark VIe systems.
2. IS220PDIAS1A – Discrete input pack; verify exact revision and application.
3. IS220PDOAH1B – Related discrete output pack revision; confirm interchangeability.
4. IS220PTURH1A – Turbine-specific I/O pack for supported Mark VIe configurations.
5. IS220PAICH1A – Analog input I/O pack.
6. IS220PAOCH1A – Analog output I/O pack.
7. IS220PRTDH1A – Resistance temperature detector input pack.
8. IS220PSCAH1A – Serial communications I/O pack.
9. IS220PPDAH1A – Power distribution I/O pack.
10. IS220UCSAH1A – Universal control system module; verify system generation.
11. IS200TRLYH1B – Discrete relay terminal board.
12. IS200TRLYH1C – Discrete relay terminal board variant.
13. IS200TRLYH1D – Discrete relay terminal board variant.
14. IS200TRLYH1E – Terminal board for compatible solid-state relay applications.
15. IS200SRLYH2A – Discrete relay terminal board; confirm the exact terminal board requirements.
Compatibility Note: Confirm the complete pack part number, terminal board model, relay type, I/O network arrangement, and Mark VIe configuration before replacement. Related models listed above are not guaranteed direct substitutes.
