Overview
Configured for serial data signal interfacing in the Speedtronic Mark VI control system, the GE IS200SSCAH1ABA (IS200SSCAH1A Serial Communication Terminal Board) provides direct physical and electrical termination for RS-232, RS-422, and RS-485 communication circuits. The board supports configurable serial channels, field wiring termination, grounding selection, and line termination settings through onboard connectors and jumpers.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200SSCAH1ABA |
| Base Model | IS200SSCAH1A |
| Brand | General Electric (GE) |
| Series | Speedtronic Mark VI |
| Product Type | Serial Communication Terminal Boards |
| Board Type | Serial Communication I/O Terminal Board (SSCA) |
| Origin | USA |
| Supported Communication Standards | RS-232, RS-422, RS-485 |
| Number of Channels | Up to 6 configurable serial communication channels |
| Terminal Block | 48-position screw-type terminal block |
| Cable Connector | One 37-pin female D-sub connector |
| Configuration | Grounding and line termination jumper settings |
| Mounting Type | Cabinet or panel mounting through designated mounting holes and cutouts |
| Application Function | Serial signal termination and communication interface wiring |
GE Backplane and Industrial Communication Interface Characteristics
The IS200SSCAH1ABA operates as a field-side communication termination component within the GE Mark VI control architecture. It provides the physical connection points between serial communication circuits and the associated control system interface.
RS-422 and RS-485 circuits can require controlled line termination to reduce signal reflections on extended cable runs. Therefore, the board provides jumper-based termination settings, including positions identified for grounding and termination configuration. These settings allow installation personnel to match the wiring arrangement to the connected serial network.
In addition, grounding selection helps control shield reference paths and common-mode interference. Correct cable routing and shield termination can reduce electrical noise introduced by adjacent power circuits. The board also supports the communication architecture used with GE industrial control platforms, where coordinated I/O interface configuration and firmware compatibility must match the associated system hardware.
Frequently Asked Questions (FAQ)
Q: Which serial communication standards can the GE IS200SSCAH1ABA support?
A: The provided specifications identify RS-232, RS-422, and RS-485 communication standards. The applicable wiring arrangement depends on the connected control interface and system configuration.
Q: How are RS-422 and RS-485 line termination settings configured?
A: The board uses onboard jumper settings for grounding and line termination selection. Personnel should configure the jumpers according to the communication network topology and the associated GE system documentation.
Q: Does the IS200SSCAH1ABA provide direct field wiring connections?
A: Yes. The board includes a 48-position screw-type terminal block for field wiring and a 37-pin female D-sub connector for connection with the corresponding I/O interface hardware.
Field Installation Guidelines
- Disconnect system power before installing or removing the terminal board.
- Mount the IS200SSCAH1ABA securely using the designated panel or cabinet mounting locations.
- Verify the associated cable and connector orientation before mating the 37-pin D-sub connector.
- Route RS-422 and RS-485 communication wiring separately from high-voltage and high-current conductors.
- Use shielded communication cable where required by the system wiring design.
- Apply shield grounding according to the installed control system grounding scheme to avoid unintended ground-loop paths.
- Configure grounding and termination jumpers before placing the communication circuit into service.
- Confirm terminal screw tightness and conductor identification before energizing the connected equipment.
- Verify serial communication settings and signal continuity after installation.
