Problems connecting to viper 200 drive
My flame table has been working for several years using the Viper 200 drives, I needed to change out some Thompson dura true gear heads, so I need to re tune the drives.
The problem is I cant get them to connect to my laptop. This is the same laptop I used to program the drives 2-3 years ago. I am also using the same USB to serial converter. I have also tried another laptop, and a second USB to serial adapter.
I was looking through the manual, and found the part about the jumper setting. Do I need to install a jumper on the 1st pin settings? I cant remember.
any Ideas?
I need to get this working, I have some plate to cut.
Thanks
Steve
Re: Problems connecting to viper 200 drive
The jumpers don't have anything to do with the serial connection. Check that the 5 pin connector pins havn't got dirty .,maybe wipe them with some alcohol.
I think you have the V200F so It is probably 38400 baud.
Larry
Re: Problems connecting to viper 200 drive
I finally gave up on trying to get my laptops to work with tuning the drives.
I connected to a serial port using my desk top, and it works. I can read , write, and exercise the drives.
I tried to download the manual to tune the drives from the website, but it was not working.
I am using 850 in oz servos that are connected to 5 to 1 dura true gearboxes. Any suggestion on where to start on the tuning?
Steve
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Re: Problems connecting to viper 200 drive
I use the same motor on our 4'x 8' router but the tuning is a bit different since i'm using a timingbelt reduction and not a gearhead.
But bank 3 is pre-programmed for that motor.
P575
I4
D 975
L4
R450
F500
I'm running 45 volts so depending on what PS voltage you are running you will need to change the P and D settings (reduce for higher voltage)
What tuning were you running ?
Larry
Re: Problems connecting to viper 200 drive
Larry, I am running 80 volts.
I was using a 30 to 1 gearhead, but it had too much torque. That is why I changed.
I worked on the flame table for about an hour today. I was happy that I could read out the setting, and exercise the drives. I could not play with it too long, I had to go to my day job.
I will try it tomorrow.
How much should I reduce the p and d?
Thanks
Steve
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Re: Problems connecting to viper 200 drive
Larry-
I installed the parameters that you suggested.
Now on the x axis (2 servos x and a) when I try to move the the axis it faults. The error led flashes 4 times (low voltages). The other drive is fine.
I switched the incoming voltage (80.0 volts). Just to rule that out.
My gantry is heavy, but it moves easily.
Any suggestion?
Steve
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Re: Problems connecting to viper 200 drive
Hmm, did it work before on the machine with the same powersupply ?
Does it produce the 4 error right away ? or when you try to move it. Are you sure its flashing a consistant 4 flashes over and over ?
Try switching the drive to a different axis to see it the problem follows
Larry
Re: Problems connecting to viper 200 drive
Larry, I have always had problems with the x-a axis.
The x-a axis was working kinda before I switched out the gearheads. I went from 30 to 1 to the 5 to 1.
I have the jumper set to bank 1.
Tomorrow I will switch the x and a drives and let you know what happens
Steve
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Re: Problems connecting to viper 200 drive
It flashes the 4 code when I try to move it. After about 3-5 inches of movement or when I change direction it faults.
When I use the viper tune should the current setting be 30 or 153 ?
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Re: Problems connecting to viper 200 drive
Larry-
I finally got some free time and I swapped the drive. Here is what I did.
1st switched the output and encoder cable. Tried to move and faulted. 4 flashes
2nd. Switched incoming 80 Vdc. Also faulted. 4 flashes
Could a setting cause this or is the drive bad?
Steve
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Re: Problems connecting to viper 200 drive
A low voltage fault (4 flashes) happens if the drive see's under 65 volts.
Is it a switching PS or linear ? Was it running before with the same PS ?
A setting shouldn't cause 4 flashes. Does the drive hold, when fault when you try to move ?
Larry
Re: Problems connecting to viper 200 drive
Larry
The power supply is a linear power supply. The table was running, and just started faulting. At first I thought the gear box was bad. I changed the gearheads. That is when I noticed the flashing faults.
I will have to check to see if it holds when faulted. Can I send you the drive for repair, or do I need to buy a new one?
Steve
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Re: Problems connecting to viper 200 drive
So just 1 drive is giving problems, and you swapped the drive and the problem followed the drive ?
Your sure its 4 flashes and not 5 eh? If its 5 then it could be an encoder noise problem.
(no it won't hold if its faulted, i meant before it faults )
Yes if you think its a bad drive and the other one works in its place, then send it back (always by mail, not courier)
Larry
Re: Problems connecting to viper 200 drive
Larry
The problem followed the drive.
I had my wife ship the drive to you. You should have it in a few days
Steve
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Re: Problems connecting to viper 200 drive
Larry
Did my servo get to you?
Steve
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Re: Problems connecting to viper 200 drive
Yes, i got it on thursday.
Hmm... did you realize the the fuse was blown ? ( Thats why it showed 4 flashes. )
I put a new fuse and it works ok.
Was this drive also tripping out easy ? The overcurrent seems sensitive, i will check that out.
Larry
Re: Problems connecting to viper 200 drive
No . I never checked the fuse. I thought that since it had power on the LEDs the fuse was good. If no LEDs would illuminate the I would have checked the fuse.
The tripping out is one of the main problems.
Steve
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Re: Problems connecting to viper 200 drive
Quote:
Originally Posted by
Scrambled1
No . I never checked the fuse. I thought that since it had power on the LEDs the fuse was good. If no LEDs would illuminate the I would have checked the fuse.
The tripping out is one of the main problems.
The drive has 2 sides. The main power and control side are opto isolated. ( This lets the RS232 and Encoder grounds have no connection to the 170 volt for safety. )
The control side with the Led's is powered by the 15 volt and isn't fused. The main Highpower side is the fused side, and has no led's. The 4 flashes (under voltage) indicates that there is no voltage or low voltage on the main side.
Larry
Re: Problems connecting to viper 200 drive
Any reason you did not add a led "power " lamp ? Have you ever looked at the fuze holders that have a let illuminate when the fuze blows? Just curious ?
Steve
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Re: Problems connecting to viper 200 drive
Larry-
The servo drive arrived today. I reinstalled it today and That drive appears to be working . After the gantry moves about 20 inches, the other x axis drive faults. The error is over current (6 led flashes). This should be from bad tuning? Correct?
Should I copy the settings in the returned/repaired drive into the one that is faulting?
Thanks
Steve
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