Energy efficiency

Clean rooms

What pneumatic actuator has the least amount of leakage?

Membrane-based system, such as the pneumatic muscle MAS, bellows cylinder EB and the clamping components EV can be described as being "absolutely" leak-tight, due to the nature of the system. With these products, there are no dynamic sealing points (piston rods/lip seal ring).


How can constantly changing pressure ranges be realized energy efficiently?

Often, the required system pressure is set on the last element of the control chain. Before that, the entire system is fed with the maximum expected pressure. This means that the high pressure level is controlled down at many points with lower pressure levels. At these points, you could say the energy is being 'destroyed'. If the different pressure levels are already controlled at the valve terminal, the losses up to the consumer are lower. If proportional valves VPPM are used as pressure zone controllers on a valve terminal MPA, the pressure levels can be optimally set, conveniently and nearly constantly, via the bus.


What energy-saving potential does our new servo controller of type CMMD-AS have to offer?

Often, handling tasks are solved with XY or XZ kinematics. For these 2-axis solutions, there is now the compact servo controller CMMD-AS for actuating 2 independent axes.

Especially the function for using the braking energy of one axis to accelerate the other one underscores the consistent component design with regard to optimal electrical energy utilization with this controller.


How can vacuum suction grippers connected in parallel be shut off when one or more suction points are no longer needed?

If one or several suction points of a vacuum line section are not 'occupied', vacuum is wasted unnecessarily. If each suction point is provided with a vacuum valve ISV, this component does not block the used suction point.


What must be taken into account when designing pneumatic circuits with optimal use of compressed air?

The right dimensioning with regard to the required drive force, the associated nominal size of the fittings and hoses and the right valve size.

The various design tools from Festo also help.


How can a higher operating pressure be generated for individual consumers?

What options are there if a higher pressure is required on individual consumers than the available system pressure?

In order not to have to supply the entire compressed air network with the higher pressure, a pressure booster DPA would make sense. With this booster, the higher pressure can be targeted at the right place.


How can a pneumatic drive be sensibly dampened?

For one thing, vibrations can be reduced with rigid designs. This often means more material must be used or higher-quality material. How can a pneumatic drive be 'dampened' without having to invest in complex mechanics/frames/cushioning elements?

Similar to a controlled servo motor, a cylinder can be moved extremely softly into its end positions with the pneumatic Soft Stop SPC11 without any mechanical design elements having to be added.


How can using a vacuum gripper be made more efficient?

The trick is to keep the volume to be evacuated as low as possible. With bellows grippers in particular, this is not necessarily the case. The porous inlay OASI, which also has a support function for very thin workpieces (e.g. foils).

Einsatz OASI


How can the energy efficiency of a classical 2D gantry handling system be streamlined?

In addition to using controlled drives, the most energy-saving potential lies in the weight, here. Particularly with handling systems, the weight being moved by a Y or Z axis is the decisive parameter when sizing the drives. Weight which is not moved must thus not ever be accelerated/braked.

With the new H-gantry kinematics, the moved masses of the Y direction of movement could be drastically reduced compared to a conventional X/Y handling system. Just the fact that the Y motor does not have to be moved reduces the necessary drive energy.


How can compressed air costs be lowered in the vacuum range?

Realizing gripping functions using suction grippers often involves high air consumption to generate the vacuum. This air consumption can be very easily reduced by only activating the vacuum when it is needed.

Also, for 'holding' a workpiece, the generated vacuum level is constantly measured with the vacuum suction nozzles OVEM. If it is sufficient, the vacuum generation stops. Compressed air costs are thus reduced to the minimum required level.


What does integrated current reduction do beyond reducing the current requirement of a solenoid coil?
  • Built-in freewheel circuit for fast switch-off (freewheel voltage=Vp+25V)
  • Protection against short-circuits helps guard electronics
  • Undervoltage and undercurrent identification ensures operational reliability
  • Monitoring of armature movement of coil ensures operational reliability



Are there any pneumatic drives that are particularly lightweight?

Moving weight costs energy and therefore money.

When pneumatic cylinders have to be moved, we recommend cylinders with high-performance polymer bearing and end caps. Depending on the size, this brings weight savings of up to 25%.

For round cylinders, the DSNUP series is ideal, and for compact cylinders ADNP



How can a service unit optimise compressed air consumption?

Prompt disconnection of the compressed air supply to a system (e.g. at night) prevents individual leaks from adding up. The electric on-off valves enable this to be done conveniently and selectively from a central location.


Does Festo provide products for clean room applications?
All regular Festo products correspond to at least clean room class 10 000 as defined by the Federal Standard 209 F Airborne Particulate Cleanliness Classes (US FED-STD-209). Some standard products even correspond to class 100, while components up to class 0 are available as part of customised solutions.