IS220TRPGH1B GE

Model: IS220TRPGH1B
Manufacturer: GE
Core Function: Provides interface and drive capability for primary turbine trip solenoids, emergency shutdown relays, and associated protection logic, ensuring rapid and reliable turbine shutdown in fault conditions.
System Compatibility: Compatible with GE Mark VIe and Mark VIeS control systems, including Speedtronic turbine platforms.
Supply Status: Available as new surplus, refurbished, or repair/exchange; supported through global networks for current and legacy applications.
Warranty Standard: 12-month functional warranty, fully tested.

Key Technical Specifications

Product Model: IS220TRPGH1B
Manufacturer: GE
System Platform: Mark VIe
Power Supply Voltage: 28 V DC nominal (from IONet and terminal board), operational range typically 24-32 V DC for solenoid driver stability.
Power Consumption: Approximately 10-15 W, accounting for multiple solenoid loads during operation.
Communication Interfaces: Dual 100 Mbps Ethernet ports for redundant IONet connectivity to Mark VIe controllers.
Trip Solenoid Outputs: 3 independent channels for primary trip solenoids (fuel shutoff, emergency lube, etc.).
Solenoid Rated Voltage/Current: 125 V DC nominal, with current handling suited for industrial hydraulic/ pneumatic trip valves.
Solenoid Response Time: L/R time constant ≤0.1 seconds, ensuring fast de-energization for critical shutdowns.
Control Relay Coil Voltage: 28 V DC supply for internal relay coils, coordinated with trip logic.
Emergency Trip Inputs: Configurable inputs for external E-stop or protection signals, voltage range supporting 24-125 V DC.
Operating Temperature Range: -30°C to +65°C, robust for turbine enclosure environments.
Humidity Tolerance: 5% to 95% non-condensing, maintaining relay and driver reliability.
Dimensions: Standard Mark VIe I/O pack footprint approximately 8.26 cm high x 4.19 cm wide x variable depth, for mounting on compatible terminal boards.
Weight: Approximately 0.6-1.0 kg, supporting efficient handling during replacement.
Mean Time Between Failures (MTBF): >150,000 hours (typical for Mark VIe protection I/O), critical for safety instrumented functions.
Certification Standards: CE compliant, UL 508 listed for industrial controls, RoHS directive adherence.

Technical Architecture & Functional Positioning

The IS220TRPGH1B functions as a safety-critical I/O pack in the Mark VIe architecture, positioned at the field interface layer connected to a primary trip terminal board (typically TRPG or similar). It drives high-voltage trip solenoids under controller command while monitoring feedback and providing local diagnostics for solenoid health, coil continuity, and power status. This placement enables distributed execution of protection logic, minimizing response time for turbine trips initiated by overspeed, flameout, or other critical faults.

The pack combines a standard Mark VIe processor board with dedicated high-current relay drivers and monitoring circuits. It supports de-energize-to-trip philosophy, where loss of command or power results in safe shutdown. Built-in features include redundant pathways for trip commands in TMR configurations, voltage monitoring to detect stuck contacts, and fault reporting via IONet. These elements address essential engineering requirements: achieving sub-second trip times for machinery protection, ensuring fail-safe operation in compliance with SIL-rated applications, and providing detailed diagnostics to support root-cause analysis without compromising availability.

In redundant Mark VIe setups, the module participates in voted trip logic, coordinating with secondary protection packs to prevent single-point failures and maintain turbine safety integrity.

Typical Application Scenarios

Applied in gas turbine units for primary fuel shutoff solenoid control, executing emergency trips on overspeed, loss of flame, or vibration excursions.
Used in steam turbine systems for governing valve trip solenoid actuation and emergency stop interfacing to protect against runaway conditions.
Serves as a replacement or upgrade component in Mark VIe retrofits, maintaining compatibility with existing trip terminal boards.
Supports combined-cycle power plants where coordinated trip functions ensure safe HRSG and turbine isolation during faults.
Utilized in critical power generation assets requiring certified protection layers for grid code compliance and equipment safeguarding.