How does a Danfoss VFD use a motor thermistor on terminals 50 (10V) and 33 (DI)?

I have a danfoss Frequency drive which has the thermistor from the motor connected across the 10 volt out put terminal 50 and a digital input terminal 33 I am told this is exceptable but how is this working and input controlled via a resistance?
kindest regsrds Joe

Hi Joe,I pulled up an old danfoss vsd manual that I had for a HVAC drive fc102 1-90 kw. Not sure obviously which one you have but the screenshot below suggest that the terminals that you mentioned are correct at least for this drive.
I hope you can see the screenshot above and the values of resistance shown. Using the ptc wired via the digital input method, a closed circuit from terminal 10 through the thermistor and back to terminal 33. Any termistor value below 800ohms is seen as healthy temperature and a value somewhere between 800ohms and 2.7 kohms will be seen as unhealthy and cause the drive to stop. Does this help?

Hi Alan big help, thanks very much my manual shows thermistor connected to 50 nd 53 so there was a bit of confusion as nothing in manual for connecting into 33.Thanks again Joe

My pleasure Joe, glad to help.