PLC

• Input Conversion: Variable Fixed DeivesDs take fixed AC power and convert it to DC using a rectifier. VSDs for DC motors can use the DC power directly.
• Smoothing: The DC output is filtered by capacitors to create a smooth DC supply.
• Output Conversion: An inverter then changes the DC back to AC, but with variable frequency (VFD) or voltage (DC VSD) to control motor speed.
• Speed Control: By adjusting the frequency (VFD) or voltage (DC VSD), the motor’s speed is precisely controlled.

A soft starter is a device that allows motors to start with less power than usual. Reducing the wattage decreases the system’s risk of electrical and mechanical shocks. They gradually increase speed and are only needed during starting and stopping. A soft starter prevents shocks by ensuring smooth and consistent starting through torque management for the progressive acceleration of the drive system. Mechanical components will last longer and require less maintenance because of this. Soft starters also help with power factor adjustment, a self-monitoring function. Due to magnetising and related losses, the relative reactive component of current consumed by the motor is redundantly high when the motor is operating at less than full load. Another useful feature of soft starters is the ability to modify the starting torque and acceleration time.

• Reduced Electrical Stress: Limits inrush currents, safeguarding motors from sudden electrical surges.
• Extended Equipment Life:Minimises wear and tear on mechanical components.
• Energy Savings: Optimises power usage, leading to lower operational costs.