Variohm EuroSensor is the exclusive UK distributor for Contelec and presents the following application note on setting up programmable angle encoders.
Some of the challenges facing system integrators, production engineers and service personnel when installing and adjusting encoders include setting the exact zero or middle point or the start and end points of measuring ranges. Components are frequently installed in such confined spaces that mechanical adjustment of the rotary encoder is impossible or extremely difficult. There is also often the need to reset angle sensors in the field in order to adjust for wear-related changes of the measured system. This should be easy and convenient to do and not require any complex aids.
A further issue that should not be underestimated is the wide variety of available applications that many customers have, and the numerous requirements these place on the encoders. While it is true that high-precision angle sensors are preconfigured with custom output characteristics and angle ranges, and are available at attractive prices ex-works, the procurement and storage of a range of different encoder variants has logistic and financial consequences.
The configuration of the Vert-X MH-C2-based angle sensors with integral setting features simplifies installation and adjustment significantly. A key factor here is that installation in a machine is not restricted by mechanical tolerances or the angle position of the rotary encoder. This can be illustrated with the setting of the start and end points in the 'plough turn control' application (see illustration above). Once the angle sensor has been attached in any position, the plough is physically moved to its starting point and Set 1 is set to zero. In the next step, the plough is moved to its end position and the second input (Set 2) is connected to ground. This simple process sets the start and end points and ensures highly accurate adjustment of the encoder.
Customers benefit as follows:
The Contelec Vert-X MH-C2 rotary encoders with integral setting features significantly simplify installation and adjustment of angle sensors.
tstart{c,75%}
tdata{Encoder types|Contactless and non-contacting rotary encoders}
tdata{Encoder size|From 22mm outside diameter}
tdata{Possible settings|Sense of rotation (CW, CCW); index point (zero point/middle point); start and end points}
tdata{Setting|Through two additional digital inputs; standardised setting sequence}
tend{}
Follow the link for more information about Contelec programmable angle encoders from Variohm-Eurosensor.