I'm already familiar with the concept of altering the frequency to change the speed of the motor. So in this scenario, I'm looking into running a pump at 40Hz (high speed) and 23Hz (low speed). This is so that the oil pumped doesn't overflow or exceed the requirements.
On the drive itself there are analogue input and analogue output terminals. Where would I connect if I want the motor to run at 2 different speeds and why?
Any sort of help would be appreciated
Link to drive manual: http://www.google.com/url?q=http://www.invt.com/uploadfiles/2017/10/pc_self_service_2017102511020828.pdf&sa=U&ved=0ahUKEwjqnLbrkbPfAhVRzhoKHUwFC7QQFggRMAI&usg=AOvVaw2Q69nCaCrAiIFEycntYFjl