Description
Product Parameters
- Model Number: IS220PDIAH1B
- Series: Mark VIe Speedtronic
- Module Type: Discrete Input (DI) I/O Pack
- Input Channels: 24 Discrete Inputs (Dry contact or 24V/125V DC)
- Protocol: Ethernet Global Data (EGD) / IONet
- Processor: Dual-core processor with internal hardware watchdog
- Redundancy: Supports Simplex, Dual, and TMR (Triple Modular Redundant) configurations
- Country of Origin: USA
- Weight: 1.32 lbs (0.60 kg)
- Dimensions: 3.3 in x 1.7 in x 4.8 in (8.4 cm x 4.3 cm x 12.2 cm) The GE IS220PDIAH1B is a high-performance I/O pack designed for the Mark VIe control system, acting as the intelligent interface between discrete field sensors and the IONet control network. This module converts electrical signals from switches, contacts, and relay auxiliary points into digital data, providing high-resolution time-stamping (1ms) for sequence-of-events (SOE) recording. Featuring an integrated local processor and dual Ethernet ports, the PDIAH1B handles signal conditioning and self-diagnostics locally, reducing the processing load on the main controller while ensuring maximum system uptime.
GE IS220PDIAH1B
GE IS220PDIAH1B
GE IS220PDIAH1B
Model Comparison
The IS220PDIAH1B is the direct successor to the IS220PDIAH1A, featuring upgraded internal memory and enhanced hardware logic to support faster boot times and improved stability during network transients. Compared to the IS220PDIAH1B-S, which is often specialized for functional safety applications, the standard “H1B” is the versatile workhorse used across gas and steam turbine control. While it shares the same physical casing as the IS220PDOAH1B (Discrete Output), the PDIAH1B is strictly for inputs and contains specific isolation circuitry to prevent field-side electrical noise from entering the IONet communication bus.
Operation Tips
- Firmware Synchronization: When installing a new PDIAH1B, use the ToolboxST application to ensure the I/O pack firmware version matches the system baseline to prevent “Identity Mismatch” faults.
- IONet Redundancy: Always connect both Ethernet ports (ENET1 and ENET2) to the redundant network switches to ensure that a single cable failure does not drop the I/O pack from the controller’s view.
- Contact Wetting: Verify the terminal board configuration (e.g., IS200TBCIH1C) to ensure the correct wetting voltage is being supplied for your specific field contacts (24V DC vs. 125V DC).
- Hot-Swap Procedure: This I/O pack is hot-swappable in TMR or Dual systems; however, you must wait for the “Active” LED to go out on the old pack before physically removing it to ensure a bumpless transfer of control.
