Description
- Product Model: IS210PDIAH1
- Manufacturer: GE
- System Platform: Mark VI Speedtronic
- Input Type: Discrete contact inputs (dry or powered), typically 24 channels per board configuration.
- Nominal Voltage: 24 V DC for contact excitation/supervision, with tolerance up to 28-32 V DC maximum for field wiring.
- Contact Sensing: Supports wet/dry contacts, with built-in wetting current (typically 1-2 mA) to prevent contact oxidation and ensure reliable detection.
- Isolation: Galvanic isolation per channel or group, providing protection against ground loops and transients in industrial environments.
- Operating Temperature Range: -30°C to +65°C, suitable for turbine hall or enclosed cabinet mounting.
- Humidity Range: Up to 95% non-condensing, with conformal coating options for enhanced environmental resistance.
- Dimensions: Standard Mark VI terminal board footprint (approximately 20-25 cm height x 15-20 cm width, DIN-rail or rack mountable variants).
- Weight: Approximately 0.8-1.2 kg, facilitating field replacement.
- Connectors: Screw terminals or barrier strips for field wiring, with provisions for shielded cable grounding.
- Protection Features: Input filtering for noise rejection, surge suppression, and fuse protection on excitation circuits.
- Environmental Rating: Industrial-grade, vibration and shock resistant per turbine application standards.
- Certifications and Standards: Compliant with GE Mark VI design norms, UL/CE where applicable, and IEC standards for control system I/O in power generation.
Technical Architecture & Functional Positioning
The IS210PDIAH1 terminal board serves as the field interface layer in Mark VI turbine control systems, terminating discrete signals from switches, limit sensors, pressure switches, and status relays before passing conditioned inputs to associated I/O packs. It provides excitation voltage distribution, contact wetting, and initial signal conditioning to ensure reliable detection of open/closed states in noisy power plant environments.
Core design elements include per-channel suppression diodes or filters to mitigate inductive kickback from relays, grouped isolation to contain faults, and robust terminal design for secure wiring under vibration. This architecture solves common issues such as false contact readings due to long cable runs or electrical noise, while supporting supervised inputs for wire-break detection in critical protection circuits.
In turbine applications, the board feeds discrete status information (e.g., breaker positions, emergency stops, lube pressure) into control and protection logic executed by the processor. Its compatibility with PDIA I/O packs enables distributed processing, reducing wiring complexity in large racks and enhancing system modularity for maintenance or expansion.
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