I have two nominally 12vdc wheelchair batteries connected in series that charge up to 15 volts each to power up a dc motor. I am using a separate 24 dc supply to power the plc controlling the motor speed thru PWM. Can I use the 30vdc motor supply to power the plc and eliminate separate 24vdc power supply?
2. Also I am using the 2nd pwm circuit on the plc to control the charging current to the batteries from an external battery charger which would mean that during charging, if I eliminated the separate supply to the plc, the plc would see the charging pulses going to batteries with a peak value around 35VDC.
Thanks
Raan