Hi,
Just a personal reflection and thought here.... Are thermistors really a good way to go on a highly dynamic powersupply such as that for a servo motor system?
The thermistor needs to be choosen so it can withstand the maximum current but in a CNC servo motor system the load on the supply is quite dynamic so when the load on the supply is low the thermistor will cool down and it will then limit the current on when a load transient (acceleration) comes along. I guess that the smaller the thermistor is the lower the "time-lag" will be. I tried to view a datasheet on Ametherm webiste but apperently you need a login to access them.
Again, just a thought, it may not be valid IRL.
/Henrik. |