GE IS220PDIAH1A 336A4940CSP1 Interface Module

GE IS220PDIAH1A 336A4940CSP1

The GE IS220PDIAH1A 336A4940CSP1 is a LAN Communications Card (SLCC) for the GE Mark V / Speedtronic turbine and drive control system. It is designed to provide communication functions between the host drive/control system and the associated LAN networks.

1. Product Overview

The G1 version of the SLCC is associated with DLAN and ARCNET communication circuitry and provides both isolated and non-isolated communication functions.

2. Technical Parameters

• LAN control processor (LCP): Integrated processor responsible for LAN communication functions.
• Memory: Two onboard/removable EPROM modules provide program memory for the LCP.
• Dual-port RAM: Provides the communication interface between the LCP and the connected drive control board.
• Network support: DLAN and ARCNET for the G1 configuration.
• Host interface: The 3PL connector interfaces with the drive control card, such as the IS220PDIAH1A 336A4940CSP1.
• Display/diagnostics: The board can support an alphanumeric keypad/display for accessing control settings and diagnostic information.

Note: Some third-party listings provide conflicting specifications for voltage, Ethernet speed, dimensions and temperature range. Those figures should not be treated as authoritative for the IS220PDIAH1A 336A4940CSP1 without the GE documentation. The GEI-100162 manual is the safer reference for installation and electrical specifications.

3. Product Features

1. Dual-network communication — G1 configuration supports both DLAN and ARCNET.
2. Integrated LAN processing — LCP handles communication processing.
3. Dual-port RAM architecture — facilitates high-speed data exchange between the communication processor and drive control electronics.
4. Isolated and non-isolated interfaces — suitable for different industrial communication configurations.
5. Diagnostic capability — compatible with an alphanumeric keypad/display for system monitoring and troubleshooting.

4. Structural Composition

The IS220PDIAH1A 336A4940CSP1 is a printed circuit board assembly incorporating:

• LAN Control Processor (LCP)
• EPROM program-memory modules
• Dual-port RAM
• DLAN/ARCNET communication circuitry
• Interface connectors
• Diagnostic/display interface
• Supporting communication and isolation circuitry

5. Application Fields

The board is primarily associated with GE Mark V Speedtronic control architectures, including:

• Gas turbine control
• Steam turbine control
• Turbine drive systems
• Excitation/control equipment
• Industrial drive systems
• Legacy GE turbine automation systems

Its primary role is communication rather than direct power control—it allows control boards and the wider Mark V system to exchange operational, control and diagnostic information.

6. Conclusion

The GE IS220PDIAH1A 336A4940CSP1 is a specialized Mark V SLCC LAN communication board, with the G1 configuration supporting DLAN and ARCNET networks. Its LCP, EPROM memory and dual-port RAM architecture make it an important communication interface within compatible GE turbine/drive control systems. It is a legacy Mark V component, so replacement should be based on the exact board number and revision rather than assuming that visually similar SLCC variants are interchangeable.