| 主权项 |
1. A system for supplying lubricant, comprising:
a reservoir for holding lubricant, said reservoir having a reservoir outlet; a pump comprising a cylinder defining a cylinder bore, a cylinder inlet in communication with said reservoir outlet for flow of lubricant from the reservoir into the cylinder bore, and a cylinder outlet supplying lubricant, a piston movable in the cylinder bore; a lubricant delivery system in communication with said cylinder outlet for delivering lubricant; a drive mechanism including a stepper motor for moving the piston in the cylinder bore; a sensor for sensing a condition of the system and providing a condition signal; and, a controller for controlling the operation of the stepper motor by selectively energizing the stepper motor to move the piston, said controller responsive to the condition signal to modify system operation; wherein the lubricant delivery system has a plurality of valves, each for delivering lubricant, and further comprising: a controller area network (CAN) bus connected to the controller; a power supply; a power bus connected to the power supply; a plurality of actuators, each associated with one of the valves for opening and closing its associated valve; and a plurality of CAN modules, each associated with and controlling a plurality of relays, each relay connected to the power bus and connected to one or more actuators for selectively energizing its connected actuators to open and close the valves associated with the actuators in order to deliver lubricant wherein each CAN module is connected to the CAN bus for controlling its relays in response to instructions provided by the controller via the CAN bus. |
