Servo Driver Safety Control Without Network Connection
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Solution Overview
Problem
Conventional servo motor control systems cannot perform a test run if the network is not constructed, as they require a network connection to receive an output permission signal for safety control, leading to operational limitations.
Innovation Solution
A motor control device with a connection determining element, signal generating element, and safety drive element that allows safety control based on specific conditions, enabling test runs even without a network connection by generating safety commands when necessary and not generating them when the connection is deemed unnecessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the servo driver requires network connection to receive output permission signal for safety control, then safety control reliability is improved, but operational flexibility and ease of operation deteriorate because test runs cannot be performed without network
Solution Approach 1:
The servo driver performs self-diagnosis to determine network connection status and automatically selects the appropriate safety control mode (network-based or non-network-based) without requiring external intervention or manual configuration, enabling the system to serve itself in determining the operational mode
Solution Approach 2:
The safety control mode dynamically switches between network-based safety control and non-network-based safety control based on the detected network connection status, allowing the system to adapt its behavior to current operational conditions rather than being fixed in one mode
2Reliability
If the servo driver always requires network connection for safety control, then safety control comprehensiveness is improved, but device complexity increases due to mandatory network infrastructure requirements
Solution Approach 1:
The network connection requirement is extracted as an optional component rather than a mandatory one, allowing the safety control system to function with or without network infrastructure by detecting connection status and switching to alternative safety control methods when network is unavailable
Solution Approach 2:
The servo driver is designed to perform multiple safety control functions through a single integrated system that can operate in both network-based mode and non-network-based mode, eliminating the need for separate safety control systems for different operational scenarios
Data Source
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AI summary
The invention relates to a motor control device, a control method, an information processing program and a recording medium, even though the network for receiving an output permission signal is not connected, the test run of the motor can be safely performed. Even though a signal generating element (104) of a servo driver (10) does not receive the output permission signal through a field network (30), if the connection to the field network (30) is determined to be not required, the signal generating element (104) does not generate the safety command.