Festo Drives > Festo DFPI Linear actuator with integrated positioner and displacement encoder.
Festo DFPI Linear actuator for actuating process valves such as gate valves and shut-off valves in process automation systems Linear actuator with integrated displacement encoder(potentiometer)
Festo actuator DFPI versions with integrated positioner and valve block available (DFPI-...-C1V-...).
With this product version, the integrated positioned checks the position of the piston rod within the available stroke range. This actuator has a factory-defined safety position that is assumed if the operating voltage or the analogue setpoint value fails.
Positions are specified via an analogue setpoint signal(4 ... 20 mA), for example via a master PLC/IPC or manually on-site via an external setpoint generator.
Position feedback is provided via an analogue feedback signal from 4 ... 20 mA. The feedback signal increases reliability and simplifies diagnostics for the user. The travel speed can be influenced using the integrated flow control screws With the P-connection type, the electrical and pneumatic connections are well protected from out-side mechanical influences by a sturdy flanged socket With the ND2P-E-P variant, the displacement encoder supplies an analogue signal proportional to the displacement in the form of a voltage (voltage divider) that can then, for example, be processed further in an external positioned.
Benefits:
Sturdy and compact housing for use outdoors
Auto-initialisation for simple commissioning
Activation with PLC and analogue set point value for fast and simple integration into the existing control system architecture
Flow control function for individual adjustment of forward and return movement speed in both end positions
No frost danger thanks to heating element
Optional sensing of intermediate positions by using Festo proximity sensors
Festo DFPI actuator merges the capabilities of a positioned and displacement encoder and linear actuator, in one single product which is easy to fit. It can enhance functional productivity along with lowering expenses and has vast cost savings.
Festo Linear actuators found in process applications normally need additional parts, and tend to be vulnerable with mechanical difficulties and require repeated repair. Festo innovative product is stronger and easier to use as all of the parts fit inside the enclosure. This Festo range is available in IP67, IP69K, IP65 protection which can handle tough surroundings that contain both humidity as well as airborne dust. The product also has CRC3 corrosion resistance. Festo actuator is fast to install along with configuring and they can also be built into current control architectures. They can additionally be operated via Festo’s CPX device.
Movement control functions enable backwards and forwards movement, the speed on the piston rods could be fixed individually. Middle locations additionally can be sensed. Information concerning the actuator position can be obtained via a 4-20mA signal, simplifying diagnostics. Festo actuator comes in stroke lengths from 40-990mm (longer strokes are available) and diameters from 100-320mm. The actuators come with pre-assembled connectors and fittings, electrical cable as well as a couple of pneumatic tubes which are supplied for the exhaust and power supply that comes in a versatile shielding tube.
For more information on the new range of Festo DFPI actuators or any products from the Festo Pneumatics product range. Contact us at Electroquip for friendly and helpful advice.