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today we will see how to wire safety relay with the dual channel emergency to power on the safety relay we need to apply 24 volt dc at a1 and a2 terminals the next we will connect both set of normal closed contacts of emergency stop across s11 s12 and s2122 terminals of the safety relay now the release starts to monitor the normal closed contacts of the emergency star push button at channel 1 and channel 2. next we have to connect a push button to manually reset the safety relay we can connect normal open contact of the push button at s33 and as 34 terminals of the safety relay next we can connect a master control relay or master control contactor with the safety relay we use normal open contact of the safety relay terminals 13 and 14 to turn on the contactor now letamp;#39;s turn on by applying the 24 volt power power led turns on if we press the reset push button once the safety relay turns on the master control contactor and start monitoring the emerge
