Chapter 3: Safety Function Description Chapter 3: Safety Function Description Figure 3-1. E-Stop Circuit 18393-000 Rev H Mobile Robot LD Safety Guide 25 Callout Description Callout Description A Standard Circuits H User E-STOPa B User-Supplied Circuits I User Interface Connector C E-STOP Source J E-STOP Relay Control Logic D Ground K Voltage of the Battery E Operator Panel E-STOP L High Power to Amplifiers F Right E-STOP (LD-250 only) M HMI Connector G Left E-STOP (LD-250 only) N Factory E-STOP a Close with a jumper if unused. Both channels must open independently when used.