...s 1) Failure involving the wiring of Safety standstill detection outputs 1) Check the wiring to ES1, ES2 and ES3. 2) Excessive electro-magnetic disturbance 2) Separately wire to ES1,...https://www.ia.omron.com/data_pdf/cat/troubleshooting_g9sx_f132-e1_1_1_csm1126737.pdf