Maxon Precision Motors offers three new motor controllers created to operate on a CANopen network. The CANopen specifications, standard EN 50325-4, provide a high-layer protocol for embedded system that employ the CAN bus. According to the CiA, the set of CANopen spec comprises the application layer and communication profile as well as application, device, and interface profiles. Members of the CiA group develop and maintain the CANopen standard and device profiles for many types of equipment and applications. For information about CANopen, visit: www.can-cia.org. CAN stands for controller-area network.
Maxon offers the new EPOS2 24/2 motor controller in three formats as shown in the photo nearby. One model controls brushed motors that include an encoder, one operates brushless motors with encoders (encoder optional), and one controls brushed and brushless motors with encoders, but an encoder is optional when using a brushless motor. The brushless motor controlled by an EPOS2 24/2 module must include Hall-effect sensors. Each of the three model types performs the same functions and uses the same firmware.
Find documentation and software for these controllers at: http://shop.maxonmotor.com/ishop/download/article/380264.xml. (This information is the same as that provided for other Maxon EPOS2 controllers.)
A CAN Master such as EPOS2 P, SPS, Soft SPS, PLC (programmable logic controller)can issue motor-control commands, or a system can use a PC that connects to modules via a USB or RS-232. channel. USB-to-CAN or RS-232-to-CAN “bridges” can simplify access to CAN-based devices. The standard CANopen interface lets application code coordinate several modules’ operations.
According to Maxon’s information, the variety of operating modes, such as position, velocity, and current mode, means equipment designers can these motor controllers in automation technology, machine tools, and mechatronic drive systems.
Visit www.maxonmotorusa.com to download the Maxon’s EPOS Studio graphical user interface, sample programs for Windows dynamic-link libraries (DLLs), and a library for CAN-master units. –Jon Titus