Jinan Keya Company specializes in producing speed controller and its auxiliary products for electric vehicle. With self-developed patent, the Company can make varieties of speed controller for purpose of electric vehicle, which mainly include series excited permanent magnet motor controller and separately excited motor controller applied to the motion and regulation of electric tricycle, industrial or mining trailer, porter, golf car, electric shovel loader, dune buggy, electric field service vehicle and electric forklift.

This manual mainly describes the information on technical features, installation and usage methods, and maintenance of the presently-producing series excited motor controller by Keya Company