Created with the design concept of “seven ultimate e-motional solutions,” the Σ-7 series delivers the world’s highest performance while providing other features such as further improvements in safety and an environmentally friendly design to meet the changing needs of its users. This series offers solutions that are guaranteed to satisfy users in all kinds of scenarios in the life-cycle of systems.
|Feature 1||Feature 2||Feature 3||Feature 4|
|Feature 5||Feature 6||Feature 7|
Ultimately ease to use
Yaskawa’s original tuning-less function has undergone further development.
Stable operations can be achieved without having to adjust gains.
No need to adjust servo gains
With Yaskawa’s original tuning-less function, systems can run without vibration for a load with 30 times (max.) of load moment of inertia. Systems remain stable even with load changes during operation.
|Σ-V Series||Σ-7 Series|
|Allowable load moment of inertia ratio||30 times (max.)||30 times (max.)|
|Max. control gain||Speed loop gain
40 Hz (approx.)
|Speed loop gain
70 Hz (approx.)
When the allowable load moment of inertia ratio is 30 times: