Industrial Automation and Control Supplier in India

A PLC (programmable logic controller) is a rugged industrial computer that automates a machine or process by reading sensor inputs, running a control program and switching outputs to motors and valves. It is the brain of most automation systems.

A PLC panel is an electrical panel that houses a programmable logic controller with its power supply, I/O modules and wiring in a protected enclosure. It automates and controls a machine or process.

A PLC panel uses a programmable controller for flexible, software-based automation, while a control panel uses hard-wired devices like MCCBs, contactors and relays for fixed control. PLC panels suit complex processes; control panels suit simple, fixed logic.

A VFD (variable frequency drive) is an electronic drive that controls the speed and torque of an AC motor by varying the supply frequency. It saves energy and gives smooth control on pumps, fans and conveyors.

A servo motor is a motor that gives precise control of position, speed and torque using feedback from an encoder. It is used for accurate, repeatable motion in robots, CNC machines and packaging lines.

A servo drive is the controller that powers and controls a servo motor, using encoder feedback to hold exact position, speed and torque. Together the servo motor and drive form a closed-loop motion system.

A VFD controls the speed of a standard AC motor in open loop, while a servo drive controls the exact position and torque of a servo motor in closed loop. VFDs suit speed control; servo drives suit precise motion.

A stepper motor is a motor that moves in fixed, equal steps, giving simple and low-cost position control without feedback. It is used for light-duty positioning in printers, small machines and instruments.

Motion control is the part of automation that manages the precise position, speed and torque of one or more motors. A motion controller coordinates several axes together for synchronised, accurate movement in machines like robots and CNC systems.

An HMI panel (human machine interface) is a touch screen that lets an operator monitor and control a machine, showing live data, alarms and settings. It connects to the PLC and replaces rows of push buttons with one clear screen.

A PLC is the controller that runs the machine logic, while an HMI panel is the screen that lets the operator see and control what the PLC is doing. The PLC does the thinking; the HMI panel shows and commands.

SCADA (supervisory control and data acquisition) is a system that monitors and controls large, spread-out processes from a central place, collecting data from many PLCs and sensors. It is used in utilities, plants and infrastructure.

A PLC controls a single machine or process directly, while SCADA supervises and monitors many PLCs and processes across a whole plant or site. PLCs do local control; SCADA does plant-wide monitoring.

A proximity sensor is a contactless sensor that detects the presence of an object without touching it. Inductive types detect metal at short range, while photoelectric types use a light beam to detect objects at long range.

A sensor detects a condition and gives a simple on or off signal, while a transmitter measures a value like temperature, pressure or level and sends a proportional 4 to 20 mA signal. Sensors detect; transmitters measure and report.

Choosing the right automation solution depends on the process, the accuracy and speed you need, and how many machines must work together. Share these details with our team and our engineers will recommend the right PLC, drive, sensor and panel for your process.

Dhyami is a trusted industrial automation and control supplier in India, offering PLC panels, VFDs, servo drives, motion controllers, HMI panels, sensors and control panels at the best price. We deliver across India with fast dispatch and expert support for automation selection.