Chapter 2 Application Example - Mitsubishi Electric MELSEC iQ-R Series Safety Manual

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APPLICATION EXAMPLE
Safety control for the entire line using a single safety programmable controller
The following shows an application image for the car welding line as an application example of the safety programmable
controller. The safety programmable controller processes safety control of the entire line as a safety application, and
processes line integrated control, which integrates processes as a standard application.
Configure the safety application operated by the safety programmable controller for the following purposes:
• When safe state signal is checked, supply power to the robots.
• When the safe state signal cannot be checked, cut off the power.
• The safe state signal can be checked using an emergency stop switch or a light curtain.
The safety application operated by the safety programmable controller operates as follows:
• Connect a safe state signal to the safety remote I/O module.
• The safety remote I/O module sends the safe state signal to the Safety CPU. The Safety CPU processes safe state signal
received with the safety program and sends safety output to the safety remote I/O module.
• The safety output cuts off the power to the robots.
The standard application operated by the safety programmable controller operates as follows:
• Perform communications between the standard programmable controller and standard CPU. Then, process integrated
control on the lines.
• Connect the restart switch and warming light to a standard remote I/O module.
• Deliver the input of connected restart switch to the safety application.
• Receive a safe state signal from the safety application, and then control the warning lights.
• To perform integrated line control of the lines, communicate the input of the standard programmable controller and restart
switch, the safe state signal, the operating status of standard control, and the like through communications between
standard CPUs
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