Position transmitters an inexpensive alternative to positional transducers
Festo Canada has introduced programmable analog feedback position sensors – the SDAT-MHS series – for pairing with any Festo T-slot pneumatic drive. (Click on CC above when video starts to view subtitles).
Said be easy to install and program, the SDAT-MHS transmitters provide consistently reliable positioning data that assures high repetition accuracy in applications such as pressing, screwing, riveting, ultrasonic welding, adhesive bonding. The SDAT-MHS bridges the gap between simple cylinder switches and costly positional transducers or mechanical potentiometers. They require no extra equipment to do the job.
Each SDAT-MHS transmitter emits a path-proportional output signal: They are available with sensing ranges of 50, 80, 100, 125, 160 mm to match the most commonly used strokes of Festo cylinders. This is said to produce accurate feedback across the entire stroke length, including discharge, without the need for the sensors to project beyond the end of the cylinder. The SDAT’s 4 to 20 mA analog output can be connected directly to analog inputs. An IO-Link operating mode provides an additional interface. The switching output can be programmed by means of a “teach” button on the transmitter while the IO-Link mode can be programmed using a simple graphical user interface.
Programming options in both operating modes are: cylinder switch function, window comparator or hysteresis comparator. The IO-Link mode is a universal interface for setting up standard functions without having to program the analog output of a PLC.