IS220PDIAH1B GE Module Parts Mark VIe Discrete Input I/O Pack

The GE IS220PDIAH1B is a Discrete Input I/O Pack (PDIA) engineered for the GE Mark VIe turbine control system. It serves as the interface between field contact input signals and the controller's I/O Ethernet network.

The module receives discrete signals from external devices such as switches, relays, limit switches, and equipment status contacts. It processes these signals and transfers the information to the control system for monitoring, sequencing, interlocking, and protection-related control functions.

The IS220PDIAH1B uses a BPPC processor board and supports 24 contact input channels. It is compatible with designated STCI and TBCI terminal boards and can be deployed in simplex, dual, and Triple Modular Redundant (TMR) configurations, depending on the selected hardware arrangement.

The IS220PDIAH1B collects up to 24 discrete contact signals from field devices. Typical signals include equipment running status, valve limit switches, relay contacts, breaker status, and alarm contacts.

The module processes incoming contact states and transfers the resulting information to the Mark VIe control system. This allows the controller to use field status information in logic, sequencing, and equipment monitoring.

The PDIA architecture supports high-speed sequence-of-events monitoring. This capability helps operators and maintenance personnel investigate the order and timing of discrete events during equipment operation.

Optical isolation separates field input signals from internal electronic circuits. Hardware input filtering helps reduce the effects of electrical noise and contact disturbances.

The module communicates with the Mark VIe control system through its dual Ethernet connections. It transfers discrete input information to the controller through the I/O network.

Depending on the terminal board and system configuration, the IS220PDIAH1B can be deployed in simplex, dual, or TMR arrangements.