GE VPROH2B IS215VPROH2BC Mark VI Emergency Turbine Protection Card

The ‌GE IS215VPROH2BC (VPROH2B) Mark VI Emergency Turbine Protection Card‌ is a critical safety module within GE’s ‌Mark VI Speedtronic‌ turbine control system,
designed for ‌emergency shutdown (ESD) and overspeed protection‌ in gas/steam turbines.

1. Key Functions‌

Triple Redundant Overspeed Detection‌:
Monitors turbine speed via magnetic pickups (MPUs) and triggers shutdown if exceeding safe limits.

Emergency Trip Logic‌:
Executes ‌hardwired failsafe shutdown‌ (independent of software) to prevent catastrophic failure.

Voted 2-out-of-3 (2oo3) Safety Architecture‌:
Ensures reliability by cross-validating signals from multiple sensors.

Fault Diagnostics‌:
Self-tests and alarms for sensor/loop integrity (supports ‌TMR/Triple Modular Redundant‌ systems).

2. Applications‌

Power Generation‌:
Protects GE Frame 5/6/7/9 gas turbines and steam turbines.

Oil & Gas‌:
Emergency shutdown for compressor drives.

3. Technical Notes‌

Inputs‌:
3x MPU signals (typically 5–12V AC).

Outputs‌:
Form-C relay contacts for trip signals.