Speed adjustment of an actuator for an HVAC system

摘要

An actuator for moving a component of an HVAC system includes a housing, a motor, and a hub configured to receive a shaft. The actuator also includes a processing circuit configured to temporarily shift the actuator from a first speed mode to a second speed mode that is different than the first speed mode upon receiving an input signal.

主权项

1. An actuator in an HVAC system, comprising:
a housing; a motor; a hub configured to receive a shaft; an input connection configured to receive a first input signal for controlling operation of the actuator; a user-operable mode selection switch attached to the housing and movable between a plurality of switch positions, each of the switch positions corresponding to a distinct operating mode, wherein the plurality of switch positions include a calibration position corresponding to a calibration mode; and a processing circuit configured to control operation of the actuator using the first input signal, wherein moving the user-operable mode selection switch into the calibration position sends a second input signal to the processing circuit, wherein the processing circuit is further configured to temporarily shift the actuator from a first speed mode to a second speed mode that is faster than the first speed mode upon receiving the second input signal and to perform a calibration process with the actuator in the second speed mode, the calibration process comprising operating the actuator to drive the shaft through a predetermined sequence of positions with the actuator in the second speed mode, wherein performing the calibration process with the actuator in the second speed mode accomplishes the calibration process more quickly than if the calibration process were performed with the actuator in the first speed mode.