Using Zener Diode for Control Voltage? | | Is there anything negative about using a Zener diode off your motor supply voltage to supply voltage for the Control? I am using R90H drives. I can have another tap on my power transformer to make a 24 Volt supply for the controller, but in the instructions it says it is fine to just use a zener to jump over from the Motor supply voltage. Just wondering if anyone used the zener diode method and if there is any drawbacks. Like I will probobly kill the motor voltage with the Estop, which would also kill the control voltage then. Any probolem with this? The zener diode is just simpler to me than making yet another DC supply.
Thanks |