Stand-alone Safety Configurations

The KE4 safety controller is a good fit for safety systems that have traditionally required a small number of conventional safety relays. As a member of the Safety at Work solutions family, it's configured using the SIMON+ visual drag & drop interface. Here, you can learn about basic safety configurations using e-stops, door interlock switches, magnetic safety switches and safety light curtains connected to the safe inputs on the safety controller.

If your setup has more safe devices, the KE4 expansion port can be used to increase the controls and I/O capacity by almost a factor of 10. If you want to use the expansion port, step-by-step configuration examples and videos are also available.

You can start by watching these step-by-step videos and downloading the matching example configuration files.

Initial set up and features
	Applying 24 VDC, connecting safety devices, memory card
Simple e-stop circuit
	Three independent, redundant e-stops with reset
Simple e-stop and magnetic door switch
	E-stop setup with reset, magnetic door switches setup for auto restart
Simple e-stop and magnetic door switch on a door with strong bounce
	E-stop setup with reset, magnetic door switch setup for auto start. Suitable for strongly bouncing doors
Setup with e-stop, magnetic door switch and electronic light curtain
	E-stop setup with reset, magnetic door switch, and electronic light curtain
Using PLC feedback
	Simple e-stop setup with Ready to Reset and Safe Output OFF feedback to PLC
Two-hand press control
	Setup for two-hand press control and auxiliary safety function (safety light curtain in this case)
Controlling a latching door lock
	E-stop with reset and solenoid-driven locking door switch. Solenoid controlled through safe output #2
Controlling a latching door lock (auto locking)
	E-stop with reset and solenoid driven locking door switch. Solenoid controlled through safe output #2
EDM feedback
	Simple e-stop safety circuit with EDM feedback from motor contactors