GE IS230TNDSH2A Mark VIe Turbine Speed Detection I/O Pack

Product Overview

The IS230TNDSH2A is a specialized Turbine Speed Detection I/O pack within the GE Mark VIe control platform. This module is engineered to interface directly with magnetic pickups (MPU) or active proximity probes to monitor shaft rotational velocity with high precision. By digitizing pulse signals at the source and transmitting them via dual-redundant IONet Ethernet, the IS230TNDSH2A ensures low-latency data for overspeed protection, zero-speed detection, and acceleration control. Its architecture is optimized for the demanding environments of gas and steam turbine enclosures, providing the essential feedback loop required for synchronous grid operations.

Technical Specifications

• Manufacturer: GE Fanuc / General Electric

• Series: Mark VIe Control System

• Module Type: Speed Detection I/O Pack IS230TNDSH2A

• Input Channels: 3 Independent high-speed pulse inputs

• Signal Compatibility: Passive Magnetic Pickups (MPU) and Active Proximity Probes

• Frequency Range: 2 Hz to 20,000 Hz (supports slow roll to high-speed trip conditions)

• Input Voltage Range: 2 V to 120 V peak-to-peak for MPUs

• Terminal Board Pairing: Primarily mounts to IS200TNDH or IS200VTND terminal blocks

• Communication Protocol: Dual 100 Mbps Ethernet (IONet)

• Internal Diagnostics: Pulse integrity monitoring, hardware watchdog, and supply voltage sensing

• Processing Power: Dedicated local processor for frequency-to-digital conversion

• Operating Temperature: 0°C to +60°C (32°F to 140°F)

• Physical Interface: Plugs directly onto the D-type connector of the terminal board