GE IS215VPROH1A Redundant channel card

When using a signal generator to verify the proper configuration setting: set the signal generator for the frequency of the speed sensor at rated speed and connect it to terminals 25 and 26. (The rated speed frequency in Hz equals the rated turbine speed in rpm times the number of teeth on the speed sensing gear divided by 60.) Open the Service Menu A** DISPLAY ANALOG INFO **: 02 TURBINE SPEED (RPM), the value should be a same number as RATED Speed (rpm). If the Monitor value is different, need to check the configuration parameters, Number of Gear teeth, etc.

Check the speed sensor. 

Minimum voltage required from the speed sensor to operate the electronic control is 1.0 Vrms, measured at the lowest controlling speed. The Loss of Speed shutdown is not recognized until the turbine speed exceeds the override setpoint. Be prepared to make an emergency shutdown when starting the engine, turbine, or other type of prime mover, to protect against runaway or overspeed with possible personal injury, loss of life, or property damage.

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