General Electric IS220PSCAH1A Mark VIe Serial Communication I/O Module

Product Description

The IS220PSCAH1A is a Serial Communication I/O Module developed by General Electric for the Mark VIe control platform. This module functions as a gateway between field devices and the Mark VIe controller, enabling seamless integration of Modbus‑based equipment such as sensors, PLCs, and intelligent instruments. By combining embedded processing, Ethernet networking, and RS‑485 serial interfaces in a compact housing, the IS220PSCAH1A simplifies cabinet layouts while maintaining robust communication performance.

Technical Specifications

• Manufacturer: General Electric (GE)

• Series: Mark VIe Distributed Control System

• Product Type: Serial Modbus Communication I/O Module

• Model Number: IS220PSCAH1A

• Primary Function: Serial communication gateway for field devices

• Serial Interface: RS‑485 port

• Supported Protocol: Modbus RTU

• Ethernet Ports: 2 × RJ45 connectors

• Ethernet Speed: 10/100Base‑T

• Processor: Embedded communication processor

• Data Handling: Real‑time protocol conversion and buffering

• Diagnostic Indicators: Power, Link, Status LEDs

• Power Supply Voltage: 24 VDC nominal

• Input Voltage Range: 18–32 VDC

• Power Consumption: 8–10 W

• Mounting Method: Direct connection to Mark VIe terminal board

• Housing Type: Industrial metal enclosure

• Dimensions: 200 × 100 × 60 mm

• Weight: Approx. 0.9 kg

• Operating Temperature: –30 °C to +65 °C

• Storage Temperature: –40 °C to +85 °C

• Relative Humidity: 5%–95% non‑condensing

• System Compatibility: GE Mark VIe Distributed Control System

Application Scenarios

This module is typically used in:

• Turbine control systems requiring Modbus device integration

• Industrial automation networks where RS‑485 communication is essential

• Process control environments needing reliable protocol conversion and Ethernet connectivity

FAQ

Q: What communication protocol does the IS220PSCAH1A support?  A: It supports Modbus RTU via RS‑485.

Q: How is the module connected to the system?  A: It mounts directly to the Mark VIe terminal board and connects via Ethernet and RS‑485 ports.

Q: What is the operating voltage range?  A: The module operates between 18 VDC and 32 VDC, with 24 VDC nominal.

Q: What diagnostic indicators are available?  A: Power, Link, and Status LEDs are provided for monitoring.

Q: How does this model compare to other Mark VIe communication packs?  A: The IS220PSCAH1A specializes in Modbus serial communication, while other packs may focus on discrete I/O or analog signal processing.