2. Connecting an E-stop switch

an emergency stop (e stop) switch is a critical safety feature used in cnc machines, to ensure the safety of the operator and equipment in case of an emergency the main purpose of the e stop switch is to stop the machine immediately when an unexpected hazard occurs this might be mechanical failures, broken tools, unintended movements, and or threats to the operator install one or more e stop switches in places where they are visible and easily reachable from all sides of the machine to comply with local safety regulations, please check to see if the use of a safety relay is required failure to comply with these regulations may result in liability issues the {{controller name}} 's e stop circuitry is only designed to notify the operator of an emergency condition the outputs that are being turned off from the {{controller name}} cannot be the only safety measure and their power should be cut off directly installation will be different depending on whether a safety relay is used wiring use normally closed (nc) e stop switches to connect to the {{controller name}} as this provides a fail safe this means that the e stop is activated in the event of wiring failure using nc e stop switches means that multiple switches can be connected in series if any of these are pressed, the signal is interrupted and the machine will come to a standstill configuration without additional setup, the controller only turns off outputs when an e stop occurs to signal the e stop to the operator, some additional software setup is required with the machine connected and powered up, start the software and navigate to setup > safety > emergency stop in the e stop input trigger edge dropdown, select falling edge press back and save the settings testing ensure that all e stop switches are not pressed with the software open, press the reset button on the {{controller name}} the e stop indicator should turn green if it was not already if the indicator does not turn green, press reset again if it still does not turn green, go back to the wiring step, as this will indicate a wiring failure once the indicator is green, the operate tab in the software should not show any indications of an e stop condition if the software does show an e stop message, the settings applied in the 2 connecting an e stop switch docid\ mi2shgxjjhzg 4zg4p8ly section have to be checked press (one of) the e stop switch(es); the e stop indicator will turn red, and the software will show an e stop message unlatch the e stop button and press reset the e stop message will go away if all switches are unpressed the next step will show how to connect the motors to the {{controller name}}