The GE IS220PPROH1A is a Backup Turbine Protection (PPRO) I/O Pack designed for GE's industrial control systems, primarily Mark Series architectures. This critical safety component delivers independent backup overspeed protection, generator synchronization checks, and watchdog functionality for primary controls, ensuring turbine safety during emergency scenarios.

• Backup Protection: Independent overspeed backup, generator sync checks, and primary control watchdog with hardware-implemented overspeed monitoring
• Redundancy Options: Supports TMR and simplex configurations, compatible with Mark VIe trip boards
• Advanced Connectivity: Dual independent 10/100 Ethernet ports for IONet communication
• Robust Hardware: High-speed processor, hardware watchdog, and internal temperature sensor
• Field Wiring: Supports up to 1,000ft of 18 AWG for voltage sensing
• Diagnostic Features: Front faceplate displays with component ID, status LEDs, and IR port for diagnostics
• Industrial Design: Conformal PCB coating and modular IS220 design for durability and easy installation

The IS220PPROH1A connects to emergency trip boards (TREG, TREL, TRES, TREA) via DC-37 pin cables. It features a power supply with built-in protection and is designed for aeroderivative turbine emergency trips, reducing external instrumentation requirements. The unit operates reliably in harsh industrial environments with a focus on long-term performance and minimal downtime.