Multi-turn absolute feedback with CANopen for industrial applications
Absolute Encoders provide discrete positioning information for a rotating shaft within either a single rotation (single turn) or over the course of multiple rotations (multi-turn) for many industrial applications.
Absolute encoders are many times used in an application where safety is a priority, continual position reporting is necessary or losing position is detrimental to the system. Another reason for using an Absolute Encoder is if there is noise in the environment or if there is a sudden loss of power and having a controlled motion is paramount to the industrial application.
EPC offers both single-turn and multi-turn absolute encoders in shaft styles, blind hollow bore, and thru-bore, with a variety of housing sizes, bore diameters, signal types and resolutions.
Control Area Network (CAN) bus, is a high-integrity serial bus system originally created as an automotive vehicle bus, which later came to be used as one of the fieldbuses for industrial automation. CANopen® is a CAN-based communication system. It comprises higher-layer protocols and profile specifications and provides a physical and data link layer for serial communication with speeds up to 1 Mbps. CANopen and DeviceNet are higher level protocols standardized on top of CAN bus to allow interoperability with devices on the same industrial network. CANopen supports 127 nodes on the network while DeviceNet supports 64 nodes on the same network.
EPC CANopen encoders use communication profile CiA 301 and device profile CiA 406 V3.2 class C2.
00:18 What is a rotary encoder?
00:40 How an incremental encoder works
01:10 How an absolute encoder is different from an incremental encoder
01:50 Why use an absolute encoder?
03:25 Single turn vs multi turn encoders
04:06 Three ways to count using absolute encoders
08:10 Customizable encoders allow for selecting the resolution you need
08:40 Examples of EPC absolute encoders
08:56 Communication protocol offerings
09:47 Applicable for food grade applications
10:05 EPC engineers are ready to help and based in the U.S.A.
#industrialautomation #communicationprofile #motioncontrol