Group 50 — AC Drive ControlMVX9000 User Manual 5-31Descriptions ofParameter SettingsGroup 50 — AC Drive Control50.01Source of MasterFrequencyRange: Default: 0100 Master Frequency determined by digital keypad on the drive.01 Master Frequency determined by keypad potentiometer.02 Master Frequency determined by 0 – 10V on terminal AI1.03 Master Frequency determined by 4 – 20 mA on terminal AI2.04 Master Frequency determined by RS-485.50.02Source of OperationCommandRange: Default: 0000 Operating commands determined by the Digital Keypad.01 Operating commands determined by the External ControlTerminals. Keypad STOP key is enabled.02 Operating commands determined by the External ControlTerminals. Keypad STOP key is not enabled.03 Operating commands determined by the RS-485communication interface. Keypad STOP key is enabled.04 Operating commands determined by the RS-485communication interface. Keypad STOP key is not enabled.50.03Stop Method Range: Default: 0000 Ramp to stop01 Coast to stopThis parameter determines how the motor is stopped whenthe AC drive receives a valid stop command.Ramp: The AC drive decelerates the motor to the MinimumOutput Frequency based on the time set in Pr. 50.12.Coast: The AC drive stops the output instantly upon command,and the motor free spins until it comes to a complete stop.Figure 5-35: Stop MethodsFreq.MotorSpeedOperationCommand ON OFFRampTimeHzStops Accordingto Deceleration TimeFreq.MotorSpeedON OFFCoastTimeHzFree Runningto Stop