For example, the NEMA 12 Control Panel operates a Ross V-Cone Tumble Blender. Two Variable Frequency Drives (VFDs) are internally mounted for controlling the tumbling vessel and intensifier bar. Main disconnect with lockout provision, color touch screen display with viewing and control functions, individual Start/Stop/Speed and Jog controls, cycle timer, system E-stop pushbutton and safety gate switch circuit are all supplied.
Ross SysCon supplies state-of-the-art equipment, such as the color touch screen or human machine interface (HMI) employed in this particular control panel. The HMI is used as a regulatory tool. It communicates with the VFD’s for start/stop/speed control as well as monitoring the output frequency and motor current. It also utilizes a cycle timer function that stops both motors when time elapses to zero. The blender motor has a brake system to stop the rotation within seconds.