Hi,

I am trying to find a way of reading the position of an encoded 3 phase motor. The motor can supply either a hall effect signal or a 0-5k ohm signal.

Ideally I would like to use a native KNX device but could use MODBUS or potentially another protocol.

There are plenty of devices for 0-1k ohms but not 5k.

Any thoughts would be most appreciated.

Thanks
J

 

Convert the motor's 0-5k ohm with a parallel resistor to something close to the standard 0-1k transmitter input.

Put a 1.2k ohm resistor in parallel across the variable 0-5k ohm and you'll get a variable 0-968 ohm output. That's close to full resolution of the 0-1k input.