GE IS210DTURH1A Compact Pulse-rate Terminal Board

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GE IS210DTURH1A Compact Pulse-rate Terminal Board.

The research confirms that this board is a specialized, compact I/O module from General Electric, primarily used in the Mark VI and Mark VIe Speedtronic Turbine Control Systems. Its functional acronym, DTUR, stands for DIN-rail Pulse-rate Terminal Board.¹

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Product Description

The GE IS210DTURH1A Compact Pulse-rate Terminal Board is a specialized component manufactured by General Electric for the high-reliability Mark VI and Mark VIe Turbine Control Systems. Its core function is to provide the interface and signal conditioning for passive pulse-rate transducers, specifically magnetic pickups, which are essential for precise speed and flow measurements in turbine control.²

The “DTUR” board is a simplex (non-redundant) terminal board designed for DIN-rail mounting to save cabinet space.³ It connects field wiring from up to four magnetic pickups to the main control processor, typically the VTUR I/O processor board, using standardized 37-pin and 15-pin cables.⁴ This connection standard is maintained from the larger TTUR board, simplifying integration and maintenance. The GE IS210DTURH1A (Placeholder Link: GE Automation Solutions Product Page) is critical for accurately measuring turbine speed (RPM) and fuel flow, ensuring the control system can execute protective actions like overspeed trips and maintain precise governing. The board features a conformal coating (H1A suffix) for enhanced protection against moisture and contaminants, a vital feature in many industrial settings.⁵ The GE IS210DTURH1A (Placeholder Link: GE Automation Solutions Product Page) is engineered with a compact form factor for easy cabinet integration. The GE IS210DTURH1A (Placeholder Link: GE Automation Solutions Product Page) also includes filter clamps for $\text{AC}$ filtering of the incoming pulse signals.

Product Parameters

As a dedicated pulse-rate terminal board, its key technical specifications include:

• Manufacturer/Series: General Electric, Mark VI and Mark VIe Speedtronic.⁶
• Product Type: Compact Pulse-rate Terminal Board (DTUR).⁷
• Input Channels: Up to four (4) passive pulse-rate transducers (magnetic pickups).⁸
• Frequency Range: Capable of handling frequencies typically in the ⁹$2 \text{ Hz}$ to ¹⁰$14 \text{ kHz}$ range.¹¹
• Mounting: DIN-rail mounted using a specialized plastic holder.¹²
• Connectivity to Processor: Connects to the VTUR processor via 37-pin and 15-pin cables.¹³
• Terminal Type: 36-terminal Euroblock-type screw terminal block for field wiring.¹⁴
• Coating: Conformal Coated (denoted by the ‘H’ in the suffix).¹⁵

Advantages and Features

• High-Speed Measurement: Provides reliable, high-frequency input for critical speed and flow measurements, essential for deterministic turbine control.¹⁶
• Compact Design (IS210): The DIN-rail mounted, compact form factor conserves valuable space within the control cabinet compared to older, larger terminal boards.¹⁷
• Signal Conditioning: Includes on-board circuitry and filtering mechanisms (like ¹⁸$\text{AC}$ filter clamps) to clean and condition the magnetic pickup signals before they reach the VTUR processor.¹⁹
• Reliable Protection: Handles inputs crucial for emergency overspeed protection and fuel flow control, making it a foundation for safe turbine operation.

Application Areas and Use Cases

The GE IS210DTURH1A is exclusively used in critical control systems for rotating machinery:

• Gas and Steam Turbine Controls: Primary interface for speed sensors (magnetic pickups on the shaft) and flow dividers/meters.²⁰
• Overspeed Protection: Provides the speed input to the main control processor for executing protective overspeed trip logic.
• Fuel Control: Used to measure and control the speed and flow in fuel-related servo loops.²¹

Competitive Comparison

The GE IS210DTURH1A competes with dedicated high-speed I/O and terminal boards from other high-end automation platforms:

Selection Advice

You should select the GE IS210DTURH1A Compact Pulse-rate Terminal Board when:

1. You are performing maintenance, repair, or planned expansion within a GE Mark VI or Mark VIe control system that requires pulse-rate inputs for speed and flow.
2. The system documentation specifically calls for the DTUR function and the IS210 compact form factor to interface with the VTUR processor.²²
3. You require a dedicated, conformally coated board for reliable processing of passive magnetic pickup signals in challenging environments.

Important Considerations

• System Integrity: Due to its role in speed measurement (overspeed protection), strict attention must be paid to wiring, shielding, and grounding as per GE’s turbine control specifications.
• Compatibility: Always verify that the hardware revision (H1A) of the GE IS210DTURH1A (Placeholder Link: GE Automation Solutions Product Page) is compatible with the version of the I/O processor (VTUR) and the overall system software being used.
• Wiring Standards: Use only the recommended #18 AWG shielded twisted pair wiring for the magnetic pickups to minimize electrical noise interference and ensure accurate frequency readings.²³