Carbon neutrality

If you already have installed inverters wherever they might generate energy savings make sure that they are running in the most appropriate mode. Check the setup of all inverters that are driving variable torque loads: fans and pumps. Make sure that they are parametrized in a correct way, it means activated either energy-saving mode or Advanced Optimum Excitation Control*.
It will lead to immediate savings in energy used to drive fans & pumps and requires no financial investment.

^{*Energy saving mode is a generally avaialble function in AC drives. Advanced Optimum Excitation Control is a unique control algorithm available in Mitsubishi Electric drives FR-F800 and FR-E800 series.}

Inverters which are driving variable torque applications such as fan or pump are very often running at partial load. From the drive system point of view this leads to less efficiency operation of the motor due to increased ratio of so called excitation current that the inverter is generating.
Mitsubishi Electric inverters have a unique control algorithm that allows the inverter to continuously adjusts the excitation current in an intelligent way to achieve an optimum level.
This provides the highest possible motor efficiency. With a small load torque, a substantial energy saving can be achieved.
For example, at 4% motor load torque for a general-purpose motor, the motor efficiency under Optimum excitation control is about 30% higher than the motor efficiency under standard, default V/F control*.

_{*Depicted in the image to the left}

• Advanced optimum excitation control ensures that the inverter which is driving fan or pump is running with the highest available energy efficiency.
• Advanced optimum excitation control is available also for vector control, therefore there is no more compromise between energy efficient operation and high torque performance of the drive system. It means that no speed/torque fluctuations will appear as it could in traditional energy-saving operation.
• Financial savings coming from reduced energy consumptions can be achieved
• Reduction in CO₂ footprint of your company operation will lead to overall reduced Scope 2 emissions