Rumba MOSFET for extruders limits
Posted by Gearsawe
|
Rumba MOSFET for extruders limits August 11, 2018 07:59PM |
I'm going to or hope to use these 50W heater cores for my extruders which are meant for 24V, and yes I am building 24V system. So this works out to about 2.1A each. I am looking are the MOSFET for the extruders.
The numbers on them are 7R060
I could not find the exact specs but this is the closest I found is... PSMN7R0-60YS
If I am reading this right at 100C these are rated for 63A (Page 3) and the hotter they get the lower the limit goes. I should not worry about to much current thru them? Granted I properly heat sink them.
Then I run into the limits of the Rumba itself. The limits for the poly fuse is 5 Amp for the Controller side. So if I run 5 stepper, 2 extruders heaters, plus a couple fans and the power needed for the board itself, I am afraid I might be going over the limits. The Bed is on its own SSR for a 600W 120VAC bed. I measured current draw of the stepper at 0.14A. For Steppers and Heaters ONLY I am at 4.9A.
Edited 1 time(s). Last edit at 08/11/2018 08:00PM by Gearsawe.
The numbers on them are 7R060
I could not find the exact specs but this is the closest I found is... PSMN7R0-60YS
If I am reading this right at 100C these are rated for 63A (Page 3) and the hotter they get the lower the limit goes. I should not worry about to much current thru them? Granted I properly heat sink them.
Then I run into the limits of the Rumba itself. The limits for the poly fuse is 5 Amp for the Controller side. So if I run 5 stepper, 2 extruders heaters, plus a couple fans and the power needed for the board itself, I am afraid I might be going over the limits. The Bed is on its own SSR for a 600W 120VAC bed. I measured current draw of the stepper at 0.14A. For Steppers and Heaters ONLY I am at 4.9A.
Edited 1 time(s). Last edit at 08/11/2018 08:00PM by Gearsawe.
Sorry, only registered users may post in this forum.