hello,
i recent use L297+IRFZ44N(N-MOS) to made a driver for stepper motor,that will work for CNC

purpose.
but i found at holding mode(i mean when there no clock signal,and motor's some winding have

current,some not, like B & C is on, and A & B is off)
the Z44 Mos is very hot(estimate at 100 C degree),though i already have heat sink on it.

so i hope i can use enable founction for mach2 ,like Kcam4 have 3 enable for X,Y,Z each,to

reduce the heat,

but at mach2 setup,it have 3 enable, and in the manual it's said usually only use one enable

for 3 axis,
the question is ,does the 3 enable that can configured at output signals is mapping to

X,Y,Z axis (if it's mapping like Kcam4,where to configure?)
or the 3 enable is only same founction as 1 enable?
also,i not clear know the heat is normal or abnormal, i can change another Mos, higher Pd

power,but i am afraid the heat may damage the MOS(will cause electric accident! or the heat

will damage the stepper motor.
it's safe or not ,i don't know!

ok ,and the Chinese Tradition New Year is coming ,may you "Kong Hei Fa Choi"
it's cantonese ,mean "hope you got big money"

Use Mach3 and you can put an Enable line for every axis and thst should fix your problem. The outputs that you need are called Enable1-6 1=x and so on...

Hi

I'm new here from Nova Scotia Canada.
Mach 2/3 seem very able and I've worked my way through everything except the motor enable settings. I can get the motors turning fine but how do you have the enable shut off automatically after motion like in KCam. Or after 1 or 2 secs after motion? I'm running into the same problem as Szcharle ... my motors are heating up

thanks Tom

In Mach3 there is a "Current Hi/Low" output that should fix your problem

YES!

That got it. Thanks very much for the quick reply

Tom

Well really it works great but it turns on current to all motors.
Is there a way to do something similar but for individual motors separately?

Tom

We can only do it for all the motors

Thanks again.
I'll put my thinking cap on and try and modify my setup

Tom

There is no any solution for this problem?

no body help me ?