Author Topic: Voltage for digital outputs is not correct.  (Read 3596 times)

ET

  • Guest
Voltage for digital outputs is not correct.
« on: June 18, 2012, 05:55:40 PM »
I'm currently programming/testing a MC050-10.
It's hooked up to a 24 volt power supply for testing, and will be hooked up to a 24 volt system on the final machine.
(Volt meter reads 24.07 V for the power supply.)
According to the documentation, the digital outputs should be providing a voltage between 23 and 24 volts.
However, they are only reading 10.23 V.
I am able to accurately set the multi-function output pins to any voltage between 0 V and 24 V.

How can I get the digital output pins to put out 24 volts?
« Last Edit: June 19, 2012, 06:04:00 PM by ET »

venkut

  • Guest
Re: Voltage for digital outputs is not correct.
« Reply #1 on: June 26, 2012, 09:33:33 PM »
Which pin are you exactly using?

ET

  • Guest
Re: Voltage for digital outputs is not correct.
« Reply #2 on: July 23, 2012, 09:46:29 PM »
Was using pins 31-36 on a MC50-10.
Found out that they do work, but they were being turned on/off very quickly, approximating a PWM, giving the measured voltages.

Quax76

  • Guest
Re: Voltage for digital outputs is not correct.
« Reply #3 on: July 24, 2012, 08:10:11 AM »
You're right. The controllers doesn't have a ratiometric voltage output.
If I need a "clean" DC voltage for e.g. a drive sensor or a constant voltage (12V supply for devices,...), I put a RC network (1k, 10u) at the output.