Shri Shyam Engineers

Controlling the drive, not just powering it

People often think of a VFD panel as a drive in a box, but the control side is what makes it useful. How does the operator start the motor, set the speed, or see a fault? Those questions shape the whole panel, and we plan for them from the beginning.

A simple setup may use a potentiometer and a start-stop button on the door. Others need a 4-20 mA signal from a pressure or flow transmitter so the drive adjusts itself automatically. We wire and configure both, including PID control where the process needs it.

Remote control is also common. Some customers want to start the drive from a PLC or SCADA system, over hardwired signals or a communication link such as Modbus. We build the panel with that in mind so nothing has to be rewired later.

Key Highlights

Operator-friendly control

Door-mounted speed and start controls, or fully remote.

PID ready

Automatic speed control from pressure, flow or level signals.

Communication options

Modbus and hardwired links to PLC or SCADA.

Safety built in

E-stop, overload and phase failure protection tested.

Safety functions get proper attention. Emergency stops, overload trips, phase failure protection and door interlocks are all wired into the control circuit, and we test each one before dispatch. A drive that stops safely matters as much as one that runs well.

When you send us an enquiry, tell us how the machine is operated and by whom. A panel designed around the operator is easier to use, and it generates far fewer calls for help.

Frequently Asked Questions

Can the VFD be controlled from a PLC?

Yes, either through hardwired signals or a communication link like Modbus. We wire and configure the panel accordingly.

Can I run the drive from a 4-20 mA signal?

Yes, that is a very common setup for pressure or flow control, and we configure the drive to follow that signal.

Talk to Our Engineers

Whether you have a full drawing or only an idea, send it across. A short discussion now usually saves a lot of rework later.

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