PLC 24V PWM Output to 5V PWM microcontroller logic
PLC 24V PWM Output to 5V PWM microcontroller logic
(OP)
Hello,
I have a problem with conversion 24V PWM (up to 5kHz) signal (PLC output signal 0.5A) to 5V PWM H-bridge (logic input 10mA). I have an idea to make a voltage divider (serial resistors connection 1,9k and 500R), so i have 19V and 5V and 10mA. Would it be sufficient? Is it a good idea? Or maybe should I use some optocoupler or RS-232 to TTL interface? Does anyone faced with such a problem? I would be grateful for help and advice :)
I have a problem with conversion 24V PWM (up to 5kHz) signal (PLC output signal 0.5A) to 5V PWM H-bridge (logic input 10mA). I have an idea to make a voltage divider (serial resistors connection 1,9k and 500R), so i have 19V and 5V and 10mA. Would it be sufficient? Is it a good idea? Or maybe should I use some optocoupler or RS-232 to TTL interface? Does anyone faced with such a problem? I would be grateful for help and advice :)





RE: PLC 24V PWM Output to 5V PWM microcontroller logic
Don
BIN Industrial & PLC Training
http://bin95.com
RE: PLC 24V PWM Output to 5V PWM microcontroller logic
RE: PLC 24V PWM Output to 5V PWM microcontroller logic
Here is the answer for you.
Opto cuppler is a great idea
Use the FODM124 of Fairchild . connect 2 K ohms between the input diode anode and the 24v PWM
Connect the output collector via 2 K ohms to the 5 V and the Transistor Collector to the Logic input.
Any question forward to : daveross10 at gmail dat com
Good luck