Product Overview
The GE IS220PSCAH1A is a Serial Modbus Communication I/O Module designed for the Mark VIe series, widely used in gas turbine control systems. This I/O pack provides the electrical interface between one or two I/O Ethernet networks and a serial communications terminal board, ensuring reliable data exchange in demanding industrial environments.
Manufactured by General Electric, the IS220PSCAH1A supports RS-232, RS-422, and RS-485 half-duplex standards across six individually configurable channels. With dual RJ-45 Ethernet ports and a 3-pin power input, it integrates seamlessly into existing Mark VIe architectures.
Technical Specifications
| Parameter |
Value |
| Part Number |
IS220PSCAH1A (REV K) |
| Manufacturer |
General Electric |
| Series |
Mark VIe |
| Product Type |
Serial Communication I/O Module |
| Number of Channels |
24 |
| Number of Inputs |
12 |
| Number of Trip Solenoids |
3 |
| Number of Outputs |
125 V DC |
| Technology |
Surface Mount |
| Suppression |
MOV across the solenoid |
| Trip Interlock Isolation |
Optical isolation to 1500 V |
| Dimensions |
17.8 cm wide x 33.02 cm |
| Operating Temperature |
30 to 65 °C |
| Power Rating |
24/28 VDC |
| Ambient Temperature Range |
-40 to 158 °F |
| Cable Distance (RS232 Mode) |
50 ft (15 m) |
| Baud Rate (Master Service) |
300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 |
Key Features
- Six individually configurable serial transceiver channels (RS-232, RS-422, RS-485 half-duplex)
- Dual RJ-45 Ethernet connectors for redundant network connectivity
- Supports Ethernet Modbus Master Protocol on simplex networks
- Self-diagnostic capabilities with configurable high/low limits
- Surface-mount technology for reliable performance
- Operates on QNX operating system
- In stock, ready for immediate shipment
Industry Applications
The IS220PSCAH1A is integral to Mark VIe systems used in steam and gas turbine power generation, balance of plant (BoP) management, deep-sea drilling, desalination, and gas compression. Its robust design ensures stable communication in harsh industrial settings.
For example, in a gas turbine control system, the IS220PSCAH1A handles Modbus communication between the controller and field devices, enabling real-time monitoring and control. This reduces downtime and improves operational efficiency.
Installation & Setup
Follow these steps for proper installation:
- Securely mount the terminal board.
- Plug the IS220PSCAH1A directly into the SSCA terminal board connector.
- Secure the I/O pack using threaded inserts adjacent to the Ethernet ports.
- Connect one or two Ethernet cables; the pack operates over either port.
- Apply power via the side connector; soft-start capability manages inrush current.
- Configure the module using ToolboxST application.
Maintenance & Reliability
Routine inspection of the IS220PSCAH1A should focus on connector integrity and environmental conditions. The module's self-diagnostic tests monitor analog inputs for position and pressure, generating alarms (e.g., 32-67, 108-113, 114-119, 72-107) to indicate errors. Regular checks ensure prolonged service life and minimal unplanned downtime.
Compatibility & Integration
The IS220PSCAH1A integrates with Mark VIe controllers over IONet, supporting both fixed I/O and Modbus I/O data flows. It is compatible with ControlST V04.07 and later, and works with RS-232, RS-422, and RS-485 devices. The two Ethernet ports support redundant network configurations, enhancing system reliability.
Selection Guide
Before purchasing, verify your system's compatibility with the IS220PSCAH1A, including firmware version (ControlST V04.07+) and network topology. Ensure you have the necessary Ethernet cables and terminal boards. PLC Source PRO offers this module in stock with a 3-7 day repair turnaround, ensuring minimal disruption to your operations.