Contactor Life Diagnosis Reset Method
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Solution Overview
Problem
Existing methods for resetting the life diagnosis alarm of a contactor do not ensure the validity and accuracy of life diagnosis data after maintenance and replacement of contacts, potentially leading to incorrect diagnosis and safety issues.
Innovation Solution
A method involving a microcontrol unit that detects a reset signal, checks the state of the diagnosis alarm, and only resets the life diagnosis data and controls the contactor's opening and closing when both conditions are met, ensuring a new life diagnosis cycle can start accurately, with integrated or remote reset switches for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the life diagnosis alarm is reset without verifying the active state and meeting specific conditions, then the reset operation can be performed quickly and easily, but the validity and accuracy of life diagnosis data cannot be ensured, leading to potential misoperations and safety issues
Solution Approach 1:
The system performs preliminary verification of the diagnosis alarm active state and checks whether the contactor is in the required operational state before allowing the reset operation. This preliminary action ensures that reset conditions are met before the actual reset occurs, preventing invalid data from compromising diagnosis accuracy while maintaining a user-friendly interface.
Solution Approach 2:
The system provides feedback to the user regarding the current state of the diagnosis alarm and the readiness for reset operation. By monitoring and communicating the active state and operational conditions, the system guides users through the proper reset procedure, ensuring both ease of operation and data validity.
2Device complexity
If the reset operation is allowed without checking operational conditions, then the device complexity is reduced and operation is simplified, but safety issues may arise due to potential misoperations
Solution Approach 1:
The system implements preliminary safety checks by verifying the operational state and alarm status before permitting reset. These preliminary actions prevent unsafe reset operations without adding significant complexity to the overall device, as the checks are integrated into the existing control logic.
Solution Approach 2:
The control unit acts as an intermediary between the user's reset command and the actual reset execution. It mediates by checking operational conditions and alarm states, allowing the reset to proceed only when safe and appropriate, thereby eliminating safety risks while maintaining operational simplicity.
3Loss of time
If the life diagnosis data is reset without proper confirmation and state verification, then the time required for maintenance operations is reduced, but the accuracy of subsequent life diagnosis cannot be guaranteed
Solution Approach 1:
The system performs necessary verification of alarm state and operational conditions as a preliminary step before reset, ensuring that the reset operation is valid. This preliminary verification is streamlined to minimize time loss while guaranteeing that only appropriate reset operations are performed, thus maintaining diagnosis accuracy.
Solution Approach 2:
The system automatically verifies the necessary conditions and performs the reset operation when criteria are met, reducing the time burden on maintenance personnel. The self-verification process ensures accuracy without requiring extensive manual checking, balancing speed and precision.
Data Source
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AI summary
The present disclosure relates to a method for resetting life diagnosis alarm of a contact of a contactor, including the following steps: Step A: detecting a reset signal by a microcontrol unit; Step B: when the microcontrol unit has detected the reset signal, checking the state of the diagnosis alarm through the microcontrol unit; and when the diagnosis alarm is in an active state, the microcontrol unit: Step C: controlling the indicator to give a first indication signal for confirming a reset operation of the diagnosis alarm; Step D: resetting life diagnosis data; Step E: controlling the opening and closing of the contact of the contactor through an actuator.