05-16-2019, 02:19 PM
(05-15-2019, 11:35 PM)ltlvt Wrote: ... I was expecting a plug and play device but not plug and play at all.
I think Plug and Play has some implied requirements that both components have the similar IQ's.
Example ... a wall outlet and a light. Both are pretty dumb. IQ's slightly above zero. Therefore you can plug a dumb light into a dumb wall outlet and play the light and it works.
Example ... a computer and a USB device. Both are pretty smart, IQ's around 100. Therefore you can plug a USB device into a computer, they have a discussion where the computer asks the USB device what it needs to be able to work with it, the USB device responds with driver information, etc., the computer attempts to install the driver and if successful then Bob's you uncle.
Example ... a VFD and a 3 phase motor. The VFD is pretty smart, IQ is around 100. The 3 phase motor is pretty dumb, IQ similar to a rock. Therefore the VFD is not capable of having a "what do I need to know about you to operate effectively" discussion with the motor. Note that this is similar to some of the discussions I have with my wife, with me being the rock in that situation, but I digress.
Anyway, something with an IQ greater than 0 needs to step in and provide the VFD with the information it needs. This is where you come in.
Arvid