A robotic catheter procedure system is provided. The robotic catheter procedure system includes a bedside system and a remote workstation. The bedside system includes a percutaneous device and a drive mechanism configured to engage and to impart an axial force to the percutaneous device and to advance and retract the percutaneous device. The bedside system includes an actuator providing torque to the drive mechanism to impart the axial force to the percutaneous device, and the torque provided by the actuator is variable. The remote workstation includes a user interface configured to receive a first user input and a control system operatively coupled to the user interface. The control system is configured to communicate a control signal to the actuator. The control signal is based upon the first user input and a second input, and the actuator provides torque to the drive mechanism in response to the control signal.
