Method for commissioning actuators
AssigneeABB AB
InventorWolfgang Scholz
Life of this patent
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Abstract
The disclosure relates to a method for commissioning pneumatically operated actuators that are controlled by a positioner. To determine the drive type, a constant flow of pneumatic fluid is applied to the actuator during commissioning while a drive-specific characteristic curve of the fed back position is recorded over time. Then the measured characteristic curve is compared with a given specimen characteristic curve. The drive type is inferred from the level of difference or agreement between the drive-specific characteristic curve and the specimen characteristic curve.
Claims7
A method for commissioning pneumatically operated actuators that are controlled by a positioner, comprising:
- a constant flow of pneumatic fluid is applied to the actuator during commissioning,
- while the pneumatic fluid is applied, a drive-specific characteristic curve of the fed back position is recorded over time,
- the measured characteristic curve is compared with a given lo specimen characteristic curve, and
- the drive type of the actuator is inferred from the level of difference or agreement between the drive-specific characteristic curve and the specimen characteristic curve.
An arrangement for commissioning an actuator, comprising:
- a positioner capable of determining a drive type based on a constant flow of pneumatic fluid applied to the actuator;
- a lifting rod mechanically caused to be moved by the constant flow of pneumatic fluid to the actuator;
- and
- a position sensor that senses the movement of the lifting rod for feedback signaling to the positioner, wherein the positioner records data for a drive-specific characteristic curve based on the feedback signal for comparison of the measured characteristic curve with a given specimen characteristic curve to infer the drive type.
Dependencies are inferred from the claim text.