Newbie ¡¡¡Help!!! with system
Posted by
ajv2803959
on 2002-04-08 07:13:55 UTC
Yesterday, I was testing a hobby system, that I bought 6 months ago.
I have had a bunch of problem that I hope groups could resolv for me.
The software I am using is Turbocnc v3.0g+. Motion important
parameters are:
Max Speed = 6000
Accel = 1000
Max start speed = 500
Pulse width = 50 microseconds
No backslash compensation.
Drivers are L297-L298 Combo, exactly SD1v1.2, from Dean Hobby cnc
website.
Cable to connect SD1v1.2 to motor is unshielded twister pair (I mean
network cable but unshielded), 1 pair per phase, finishing in a 5
pins microphone socket, male in driver female in motor.
Power supply is a toroidal 24v 6amp, is giving 33volt aprox. OK
capacitor is rated at 15000 microfarads 100 volt
OK. I am ready fo running stepper.
I made G00 X1000. The motor run very smooth.
I made G01 x900 F100. The motor began running well, 2 0 3 turns
after, shaft motor make steps forward but make some step backward, in
forward-backward motor loss torque, beacuse I am be able to turn the
shaft in the opposite direction. I don´t understand the backward
movement.
If I put G01 X900 F200 the imprecision is much worst.
It`s the same sympton with the 3 drivers.
I gave a try to EMC, with freqmod, the result was letal.
The symptom was similar at TurboCNC, but in trial, I made a shorcut
between phases, it made a reset in PC.
Parallel port don´t work at all. Driver lights power on and idle
leds, but in rapids G00 X1000 motor turn 2 or 3 biggers steps no
more, but buzz well i hear the ramping in acceleation.
With other driver G00 X1000 is fine.
I think some thing is wrong in driver, could you give any
advice, in order to get working the driver properly again.
The only tool that I have is a polymeter.
So could you give advice, in order to get smooth motion with the
others two drivers without damage?
Thanks in Advance
I have had a bunch of problem that I hope groups could resolv for me.
The software I am using is Turbocnc v3.0g+. Motion important
parameters are:
Max Speed = 6000
Accel = 1000
Max start speed = 500
Pulse width = 50 microseconds
No backslash compensation.
Drivers are L297-L298 Combo, exactly SD1v1.2, from Dean Hobby cnc
website.
Cable to connect SD1v1.2 to motor is unshielded twister pair (I mean
network cable but unshielded), 1 pair per phase, finishing in a 5
pins microphone socket, male in driver female in motor.
Power supply is a toroidal 24v 6amp, is giving 33volt aprox. OK
capacitor is rated at 15000 microfarads 100 volt
OK. I am ready fo running stepper.
I made G00 X1000. The motor run very smooth.
I made G01 x900 F100. The motor began running well, 2 0 3 turns
after, shaft motor make steps forward but make some step backward, in
forward-backward motor loss torque, beacuse I am be able to turn the
shaft in the opposite direction. I don´t understand the backward
movement.
If I put G01 X900 F200 the imprecision is much worst.
It`s the same sympton with the 3 drivers.
I gave a try to EMC, with freqmod, the result was letal.
The symptom was similar at TurboCNC, but in trial, I made a shorcut
between phases, it made a reset in PC.
Parallel port don´t work at all. Driver lights power on and idle
leds, but in rapids G00 X1000 motor turn 2 or 3 biggers steps no
more, but buzz well i hear the ramping in acceleation.
With other driver G00 X1000 is fine.
I think some thing is wrong in driver, could you give any
advice, in order to get working the driver properly again.
The only tool that I have is a polymeter.
So could you give advice, in order to get smooth motion with the
others two drivers without damage?
Thanks in Advance