Innovative Thinking

The need for Electric Drives is universal, and is increasing at a resounded rate due to constant innovation in the field of industrial automation—specifically robotics. Electric Drives offer the most efficient solution to controlling the output of a motor, and therefore are widely used in almost all industries, big or small.

Variable Frequency Drives (VFDs) are required for precise control of speed, position and torque at different loads, which is not efficiently achievable through other methods such as introducing resistance. Some of the benefits of Electric Drives, AC or DC are:

• A high level of efficiency in an industrial environment
• Have a predictable behavior
• Allow the control of starting current
• Have faced great advancement in recent years and are now embedded with microprocessors and digital electronics components

Because of their many benefits, Variable Frequency Drives, or VFDs, are swiftly surfacing in large industrial systems with complex motor systems requirements. The benefits of VFDs include higher system efficiency, operation flexibility, and improved reliability. The key to success behind this adoption of VFDs is developing clear-cut, well-defined requirements for running drives and motors. Having requirements in such a form allows components to be designed in an optimum manner, resulting in highest reliability and lowest cost of ownership.

Along with heat, dust and poor lubrication, moisture is one of the leading causes of motor failure. Compared to installations in dry areas, electric motors get an instant slump in their operating lives as soon as they’re set-up in a damp area. For instance, when a warm motor shuts down, it sucks in cool air, which naturally would contain moisture due to the location. This leads to condensation droplets that are absorbed by the insulation, leading to corrosion of the windings. Furthermore, motors that are operated intermittently are at greater risk since they can accumulate moisture and with the passage of time deteriorate a motor’s operational life.

Automation isn’t a desire, it’s a need of the hour. Every plant operations manager is aware of this need and the impact it has on the overall safety, reliability and economic efficiency. Still, companies are sometimes suspicious of adopting such technologies as the risk for failure is significant while the margin of error near to zero. This is especially true in large-scale industries where even a single hour of downtime due to delayed or malfunctioned automation can result in hundreds of thousands of dollars’ worth of losses.

Two major trends have greatly impacted the Motion Controls industry, and are currently affecting the global controls market: safety and single-cable servo motors. Therefore, knowing about the changing trends beforehand can serve as a great way to route the selection of your automation hardware in the right direction.

AC Drives vs. DC Drives is a battle that’s been going on for too long, and even though AC may have emerged the victor in several fields such as generation and transmission, DC is still a force to be reckoned with.

A Motor Control Center (MCC) is an integral part of a manufacturing plant, and its continuous operation is vital if the company wants to make a profit. The safety of Motor Control Centers is a hot-topic in modern equipment design due to the ensuing hazards, most notably arc flashes. The safety of both the MCC as well as the personnel who operate it should therefore be a priority and appropriate guards must be in place to tackle any emergency.

Safety is a top priority for companies and facilities not only because it protects its workers but it can also protect its machinery.  When developing safety and control systems, facilities tend to focus on the machines and products inside the facility, but outside factors should not be forgotten.  Companies should look beyond what is controllable in their facility when setting up their motor control centers.