F1 parameters set the fault detection function in Speed Feedback (V/F Control). When A1-02 = 0 [Control Method Selection = V/f], set H6-01 = 3 [Terminal RP Pulse Train Function = Speed Feedback (V/F Control)] to enable this function. For speed feedback, connect the single-channel pulse signal from the PG encoder to pulse train input terminal RP. Use the Slip Compensation signal to improve the accuracy of Speed Control. This function is available for Motor 1.