Hi All, I wonder if you can help i need to generate a analogue or V output as a fixed speed. I would prefer to have a contact from an M relay when closed force say 5V to the output and then should another M Relay call then force say 3V out the same output..

The process would be that a fan motor running at a speed of 5V and then when a certain setpoint is achieved it then drops to 3V.

The setpoint would be driven by a temperature from a separate analogue input 

Hello Buttsy26,

To switch between different fixed voltage values ​​on an analog output, you use the Muxer module.

But remember, the Logo's analog outputs are only intended for controlling other devices. You cannot connect a fan directly there. In the worst case, this will destroy the analog output module.

Regards Ella_68

(translated by google)

Sorry i wasnt clear, so i have no analogue input for this, i have two internal contacts one for low speed and one for high speed.

What i want to do is drive a voltage 0-10v to enable a fan speed which for example on high speed mode needs to output to the inverter 6V dc to allow the drive to speed up..

Then when it goes into low speed mode using the other contact which will disable the high speed contact it will then output 3V 

i dont want to have an input voltage from the analogue or voltage input i just want to drive a fixed output from the voltage, The drive will accept a 0-10v output from the plc to speed up or slow down the drive.

I hope that clearer