IS220PDOAH1A  Discrete Output I/O pack

General Electric  IS220PDOAH1A  Discrete Output I/O pack

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IS220PDOAH1A is a Discrete Output Pack and is part of the GE Speedtronic Mark VIe gas turbine control system. It

connects one or two I/O Ethernet networks to a discrete output terminal board via an electrical interface. The pack

includes a processor board shared by all Mark VIe distributed I/O packs as well as an acquisition board dedicated

to the discrete output function.

IS220PDOAH1A

IS220PDOAH1A Functional Description

The pack can control up to 12 relays and accepts feedback from the terminal board. There are magnetic relays (TRLYH1B, C, D, and F terminal boards) and solid-state relays (TRLYH1E boards) available.

The pack is powered by three-pin power input and two RJ45 Ethernet connectors. Output is via a DC-37 pin connector that is directly connected to the associated terminal board connector.

Indicator LEDs provide visual diagnostics, and an infrared port allows for local diagnostic serial communications.

It works with six different types of discrete (relay) output terminal boards, including TRLY and SRLY boards, but not

DIN-rail mounted DRLY boards. The number of I/O packs used in a signal path is referred to as the control mode:

Simplex employs a single I/O pack and one or two network connections.

Dual employs two I/O packs with one or two network interfaces.

TMR employs three I/O packs, each with one network connection.