ACTUATOR HAVING A TEST MODE

• US 20180251010A1
• Filed: 05/07/2018
• Published: 09/06/2018
• Est. Priority Date: 10/21/2011
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Waseen, Daniel, Johnson, Bruce S., Weber, Larry, Wacker, Paul
• Granted Patent: US 10,744,848 B2
• Time in Patent Office: Days
• CPC Class Codes: B60H 1/00857 characterised by the means connecting the initiating means, e.g. control lever, to the damper door
• CPC Class Codes: B60H 1/00964 Control systems or circuits characterised by including features for automatic and non-automatic control, e.g. for changing from automatic to manual control
• CPC Class Codes: B60Y 2304/09 Testing or calibrating during manufacturing

Abstract

An actuator system which may incorporate a motor, a motor controller connected to the motor, a processor connected to the motor controller, and a switch connected to the processor for engaging the motor to open and close an actuator shaft. The switch may have a position which is a test mode. Selecting the position of test mode may cause the motor to move the actuator shaft to a certain position to verify operation of the actuator shaft. The actuator shaft may stay in the certain position while the switch is in a position of test mode. The system may also incorporate a spring attached to the actuator shaft. If power fails to the motor, then the actuator spring or another mechanism may return the actuator shaft to a fail safe position. The test mode may alternatively be selected at a controller via the communications bus to the processor.

Claims

1. An actuator system for use with heating, ventilating and air conditioning (HVAC) equipment, comprising:

a motor;

a motor controller connected to the motor;

a processor connected to the motor controller; and

a switch connected to the processor for engaging the motor to open and close an actuator shaft; and

wherein;

the switch has a position which is a test mode; and

a selection of a position of the test mode causes the motor to move the actuator shaft to verify operation of the actuator shaft.