VSD
Perceptions vs Facts

1-12

Perception

VSD is not designed to run at full speed, 100% of the time

Fact

Our VSD's are built from a dedicated design that is not derived from fixed speed compressor technology. The parameters for the drivetrain, inverter, and cooling system of our VSD compressors are all based on maximum speed, full load, and worst-case conditions (including pollution and under voltage). Therefore, our VSD compressors are always designed and qualified to handle all running conditions, including 100% speed at all times.

Perception

VSD compressors are complicated to operate

Fact

While VSD compressors contain more advanced technology than fixed speed compressors, our VSD's are designed to be user-friendly and easy to operate. For example, our VSD compressors only have one setpoint pressure, which means they are easier to configure compared to a load/unload pressure.

Perception

VSD compressors are less reliable than fixed speed compressors

Fact

Our VSD compressors are built for a long lifetime of reliable performance, and their advanced technology even increases their dependability. VSD compressors can operate at lower speeds, which results in decreased wear on their components (as opposed to compressors that are continuously running at maximum speed). Additionally, a VSD model experiences lower peak currents and load surges due to the soft and controlled starts/stops. This reduces the stress on the mechanical and power electronics. As a result, the compressor's lifespan is extended compared to fixed speed models.

Perception

VSD compressors require a lot of maintenance

Fact

VSD compressors require regular maintenance to ensure an optimal production uptime. The maintenance intervals are never shorter than those of equivalent fixed speed compressors. However, the advanced VSD technology makes maintenance easier by providing real-time monitoring and diagnostics.

Perception

VSD has too many electronic components

Fact

VSD compressors don’t need more electronic components to run, except for the frequency drive. This drive is essential for achieving improved energy efficiency and performance benefits

Perception

VSD has a higher risk of failure

Fact

VSD compressors experience less component stress compared to their fixed speed equivalents due to their ability to adapt speed and flow. The result is a lower load on the bearings and other parts, which helps improve reliability.

The risk of failure can be mitigated through proper maintenance and servicing, which can help ensure that VSD compressors operate reliably for many years. We offer extended warranty and service plans that can provide added protection and support for customers. Furthermore, our VSD compressors are equipped with advanced diagnostic systems that help prevent system failures and reduce the risk of downtime.

Perception

VSD is not the best solution for installations with multiple compressors at the same location

Fact

Plain and simple, VSD compressors are always the best choice. Inter-machine communication protocols together with a centralized controller, guarantee that users get the most out of their VSD compressors and their higher operating flexibility, superior performance and higher efficiency.

We have created a separate “WHY Operating Multiple VSD compressors is Better” white paper to explain in-depth why using an installation with multiple VSD compressors is the most efficient solution.

Perception

VSD is not suitable if fixed speed is specified by the customer

Fact

The goal is to find the best solution that meets the customer's needs, while also ensuring optimal performance, efficiency, and cost-effectiveness.

If a customer has specified fixed speed compressors for their application, then their specifications may be based on factors or perceptions such as cost, simplicity, or compatibility with existing equipment or systems, or perhaps a competitor’s offer.

It is important to work with customers to understand their needs to find the most suitable solution considering all factors. These include the customer's specifications, the specific requirements of the application, clarify about profile and airflow as well as any potential benefits or drawbacks of

different compressor options. VSD compressors offer significant benefits in terms of energy efficiency and cost savings, and VSD compressors offer significant benefits in terms of energy efficiency and cost savings. Additionally, our VSD compressors give customers more flexibility as the pressure can be adjusted over a wide range without the need to buy another compressor.

Perception

VSD is not suitable in case of power supply surges

Fact

With proper protection and configuration, VSD compressors can operate reliably and efficiently in a wide range of power supply conditions.

It is important to take the appropriate steps to prevent or mitigate the effects of power supply surges. This can include installing surge protection devices, such as surge suppressors or surge arrestors, to limit the voltage spikes caused by surges, and to protect the equipment.

In addition, it is important to ensure that the VSD compressor is properly sized and configured for the specific power supply conditions and requirements of the application.

Perception

VSD compressors are not suitable for a small workshop

Fact

By opting for a VSD compressor, customers can benefit from more peace of mind, a better user experience and lower operational costs.

Also, VSD compressors provide advantages in terms of noise reduction, which can be an important consideration in small workshops where noise levels are a significant factor.

A VSD compressor with lower peak current and load results in a lower energy bill, which is amplified even more by the lower power consumption.

Perception

Our VSD is not suitable if a competitor VSD is already installed

Fact

Our VSD compressors give customers best-in-class performance and easily outperform the VSD compressors of the competition. We can service most of our competitors' units, which can be a major advantage for customers who have mixed compressor fleets or who are looking to switch from another manufacturer.

In addition, we offer a range of service and maintenance plans that can help customers keep their compressors running smoothly while minimizing downtime.

Perception

VSD compressors are expensive

Fact

VSD compressors may have a higher upfront cost than fixed speed compressors, but they can provide significant energy savings over time, leading to much lower overall operating costs during the machine’s life cycle. Therefore, the additional investment cost is very quickly offset by energy savings. VSD compressors also offer benefits beyond just energy efficiency, including a smaller footprint, quieter operation, and greater connectivity.