Patent ID: 9722526
Date: 2017-08-01
CPC Classifications: H02P,H05K

Claim:
1. A motor drive system comprising: a modular power subassembly controllable to provide controlled frequency AC power to an electric motor; a modular control subassembly separable from the modular power subassembly that, in operation, applies control signals to the modular power subassembly for controlling the provided power; and an add-on communication subassembly positionable between the modular power subassembly and the modular control subassembly, comprising a component physically separate from the modular control subassembly, and electrically coupled to the modular control subassembly for providing communication between the modular control subassembly and at least one external device when the modular control subassembly is secured to the modular power subassembly and the add-on communication subassembly is coupled to the modular control subassembly.