GE Vernova IS220PDOAH1A Discrete Output I/O Processing Package

GE Vernova IS220PDOAH1A Discrete Output I/O Processing Package

IS220PDOAH1A is a discrete output I/O processing package (PDOA) for GE Vernova Speedtronic Mark VIe turbine control system, which belongs to the intelligent relay output main control card and is used in conjunction with TRLY/SRLY relay terminal boards.
The core function of IS220PDOAH1A is to receive control instructions from the Mark VIe controller, drive the relay output circuit, output switch instructions to control the solenoid valve, trip circuit, alarm indicator light, and auxiliary equipment start stop; IS220PDOAH1A simultaneously collects relay status feedback signals from terminal boards to achieve output circuit diagnosis. It supports TMR triple redundancy architecture and is the core output control card in ETS emergency tripping, unit interlocking, and sequential control circuits, ensuring reliable execution of gas turbine and turbine protection actions.

Main product range

• Control system (DCS/PLC/CNC): panel controller, HMI and human-machine interface, industrial PC, CPU processor module, communication module, analog/digital I/O module
• Drive and motion control: frequency converter, servo drive, servo motor, power module
• Robot spare parts: key spare parts such as robot control board, axis computer, servo unit, I/O module, etc
• State monitoring and safety system: vibration monitoring system, safety instrumented system (SIS), redundant controller

Application Industry

The products are widely used in various industrial fields such as metallurgy, oil and gas, petrochemicals, electricity, power transmission and distribution, water conservancy, water treatment and environmental protection, coal mining, aluminum industry, glass manufacturing, paper and printing, textile printing and dyeing, machinery manufacturing, electronics manufacturing, automobile manufacturing, plastic machinery, boiler heating, energy, etc.

GE Vernova IS220PDOAH1A Discrete Output I/O Processing Package

Product Features

1. The intelligent I/O pack comes with a local processing unit that can independently complete output driving, status feedback collection, and fault diagnosis, reducing the load on the main control controller.
2.  Support TMR triple redundant voting architecture, used for high safety level circuits such as unit ETS tripping, to reduce the risk of misoperation and refusal to operate.
3.  Dual IONet redundant Ethernet communication, deterministic bus scanning, ensuring real-time and reliable issuance of control instructions.
4. Fault safety design, forcing output disconnection during power on and self check stages to avoid accidental triggering of equipment actions in abnormal situations.
5. Equipped with 15 feedback diagnostic channels, real-time monitoring of relay coils, terminal boards in place, and circuit disconnection faults, and timely reporting of alarms.
6. Adapt to TRLY magnetic relays and SRLY solid-state relays with multiple types of terminal boards, and flexibly adapt to different load conditions.
7. The board is coated with three anti coatings, which are resistant to moisture, dust, and electromagnetic interference, and are suitable for harsh working conditions in power plant gas turbine rooms and steam turbine rooms
8.  Supports hot swapping and online replacement of spare parts, without affecting the operation of other protection and control circuits inside the rack.
9.  Multi channel status indicator lights provide a visual view of power, network, and fault status, making on-site debugging and inspection convenient.
10.  Support SOE event sequence recording, accurately capture the timing of tripping and interlocking actions, and facilitate accident traceability analysis.

Main brand

————————Shenzhen Changxin Automation Equipment Co Ltd -————————

Products that have been released are welcome for consultation. Due to the wide variety of models, we were unable to upload physical images one by one!

Parameter Specifications