I am troubleshooting the GCV position alarm on a GE Frame 5 with a Valmet DNA control system(relatively new turbine control in power generation space).
The challenge is that after calibrating the 96GC2, the feedback continues to drift until the alarm annunciates again. I have changes the Servo valve and filter on the hydraulic line, but the issue still persists. What can be the cause of the drifting? Is it possible the LVDT is faulty?
The challenge is that after calibrating the 96GC2, the feedback continues to drift until the alarm annunciates again. I have changes the Servo valve and filter on the hydraulic line, but the issue still persists. What can be the cause of the drifting? Is it possible the LVDT is faulty?
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