We are interfacing a motor control panel to an existing motor controller in a bucket for a conveyer that carries coal. My question is: is there anystandard that requires that the on and run lights be controlled from the control panel or can they remain part of motor controller? The control panel provides a 30 second buzzer then a 15 second shunt for the zero speed switch. The 120 volt control panel power is derived from the motor control transformer. The remote start stop stations are connected to the control panel and not the bucket. There are two sets of run and off lights at the bucket and at the start stop station.