CUI has announced a new addition to its high-resolution, low-cost AMT encoder line with the AMT303 series. The encoder generates standard U/V/W commutation signals for vectoring current to brushless motors. Resolutions can be set through the encoder's SPI (serial peripheral interface). Commutation output can accommodate brushless motors with 2-, 4-, 6-, 8- or 10-pole pairs, and is also selectable via the SPI. The encoder offers supplementary incremental A, B, and Z channels for various servo positioning and startup sequences. Additional options include nine mounting patterns and 10 bore sizes, creating a flexible platform that is able to mate with many industry standard motors. The encoder generates position information using the company's patented, capacitive code generation system coupled with a proprietary ASIC. The encoder consumes a maximum of 10mA at 5V DC. The encoder's SPI affords higher throughput and simpler hardware interfacing than I²C or SMBus. Using TCL code, the on-board PIC 16F690 MCU operates at up to 10MHz providing for high-speed applications. Zero position may be set by SPI command or ground trigger. An onboard EEPROM can store up to 128byte of customer data.
