IS230STAI2AH01 - Analog Input terminal board

SPECIFICATIONS

Part No.: IS230STAI2AH01
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Microprocessor: Intel Ultra Low Voltage Celeron 650 MHz
SDRAM: 128 MB
Compact Flash Module: 128 MB
Advanced Transfer Cache: 256 KB
Operating System: QNX
Expansion site: PMC expansion
Technology: Surface mount
Temperature: -30 to 65oC
Product Type: Simplex Analog Input terminal board
Availability: In Stock
Series: Mark VIe

Functional Description

IS230STAI2AH01 is a Simplex Analog Input terminal board developed by GE. It is a part of Mark VIe control system.It is designed to handle analog signal interfacing between field devices and the control system.

Analog Inputs

• The board is equipped with 10 analog input channels. These channels support multiple wiring configurations, including two-wire, three-wire, four-wire, and externally powered transmitters. This flexibility allows for the connection of various types of analog input devices, depending on the system's requirements.
• The input channels are designed to receive standard analog signals, such as 4–20 mA, 0–5 V, or 0–10 V, based on the system setup and the type of external transmitter used. These signals typically correspond to measurements from field instruments monitoring temperature, pressure, level, or flow.

Analog Outputs

• The board includes two analog output channels. By default, both outputs are configured to operate within the 0–20 mA current range. Additionally, Channel 1 can be jumper-configured to support an output range of 0–200 mA. This provides compatibility with devices that require higher current signals.
• Analog output channels are typically used for signal retransmission to connected devices such as control valves, indicators, or external systems that rely on analog input.

Architecture and Configuration

The board is designed for simplex configurations only, meaning it operates without redundancy. It is intended for applications where non-redundant analog I/O is acceptable, such as systems with lower criticality or where redundancy is handled at a higher system level. This also makes the board suitable for installations where cost and space limitations are a factor. The board connects directly to an I/O pack within the Mark VIe control system, which is responsible for the digitization of analog signals and communication with the controller or higher-level system architecture.

Terminal Design

The board uses high-density Euro-block terminal connectors to facilitate field wiring. These connectors are designed to minimize the physical footprint of the board while still supporting multiple wire connections. The Euro-block design ensures secure and reliable wire terminations, which is critical in industrial environments subject to vibration, temperature changes, and electrical noise. This connector style also simplifies maintenance and replacement due to its plug-and-play capabilities.

Board Identification and Diagnostics

An onboard identification (ID) chip is integrated into the board. This chip stores identification data, which is read by the connected I/O pack. The ID chip plays a key role in system diagnostics, inventory management, and configuration validation. During operation and maintenance, the control system uses the chip data to confirm that the correct board type is installed and functioning as expected, aiding in troubleshooting and reducing configuration errors.

Installation Guidelines

• The terminal board is installed with a plastic insulator that provides isolation and support. This assembly is typically mounted on a sheet metal carrier, which is then attached to a DIN rail within the control cabinet. For installations where DIN rails are not used, the board and insulator can also be mounted on a sheet metal plate and bolted directly to the cabinet structure. This flexibility allows the board to be integrated into different cabinet designs based on system requirements.
• Two types of Euro-block terminal configurations are available for the board. The STAI_1 version comes with a permanently mounted 48-terminal Euro-block. This fixed configuration ensures a secure and stable connection. In contrast, the STAI_2 version features a right-angle header that accepts a range of commercially available pluggable Euro-blocks, also with 48 terminals. This allows for easier field service and replacement without disturbing the wiring.
• Wiring to the board is typically done using #18 AWG shielded twisted pair cables, which help reduce electrical noise and improve signal integrity. A dedicated shield termination point is provided near the terminal blocks for proper grounding of cable shields, which is essential for maintaining accurate analog signal transmission.
• The board is capable of handling various analog input types, including two-wire, three-wire, and four-wire transmitter configurations, as well as externally powered transmitters. It also supports voltage input ranges of ±5 V and ±10 V DC. For outputs, the board provides two current output channels in the 0–20 mA range, with one channel configurable to output 0–200 mA through onboard jumpers. This allows compatibility with different field devices and signal requirements.

The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS230STAI2AH01?
It is a Simplex Analog Input terminal board developed by GE under the Mark VIe series.

What types of analog inputs are supported?
The board supports inputs from two-wire, three-wire, four-wire, and externally powered transmitters. It also accepts voltage inputs of 5 V and 10 V DC.

What are the output specifications?
It includes two analog output channels. Both default to 0–20 mA, and one can be jumper-configured for 0–200 mA output.

Is the board redundant?
No, it is designed for simplex operation only and does not support redundant configurations.