- Why should I use a VFD?
- Can I use a VFD and a Soft-Starter?
- What is an across the line starter?
- What is a multi-speed starter?
Reduce Energy Consumption and Energy Costs
If you have an application that does not need to be run at full speed, then you can cut down energy costs by controlling the motor with a variable frequency drive, which is one of the benefits of Variable Frequency Drives. VFDs allow you to match the speed of the motor-driven equipment to the load requirement. There is no other method of AC electric motor control that allows you to accomplish this.
Electric motor systems are responsible for more than 65% of the power consumption in industry today. Optimizing motor control systems by installing or upgrading to VFDs can reduce energy consumption in your facility by as much as 70%. Additionally, the utilization of VFDs improves product quality, and reduces production costs. Combining energy efficiency tax incentives, and utility rebates, returns on investment for VFD installations can be as little as 6 months.
The best overall motor control package starts with a drive to provide the greatest amount of control, flexibility, and protection. Adding a bypass with an integral soft starter provides a backup system to run the motor should the drive fail. Large drive systems should have soft starters in the bypass, otherwise the application risks negatively affecting the power system, damaged bearings, or bent
shafts once the bypass is engaged.
The “ Across Line Magnetic Starter ” is the simplest method of controlling 3-phase motor using a magnetic contactor.
This starter connects the incoming power directly to the motor.
It can be used in any application where the motor runs in only one direction, at only one speed, and starting the motor directly across the line does not create any “dips” in the power supply.
The Multispeed Starter is designed to be operated at constant frequency and voltage. There are two ways to change the speed of an AC motor: Vary the frequency of the current applied to the motor or use a motor with windings that may be reconnected to form different number of poles. The multispeed starter uses the latter option to change speed.