- Hardware & Machines
- CNC Machines
- Turning
- Small victory in the war against the Cincinnati cinturn 12u
Small victory in the war against the Cincinnati cinturn 12u
- smc.collins
- Offline
- Platinum Member
- Posts: 660
- Thank you received: 113
Please Log in or Create an account to join the conversation.
Please Log in or Create an account to join the conversation.
- smc.collins
- Offline
- Platinum Member
- Posts: 660
- Thank you received: 113
Please Log in or Create an account to join the conversation.
I wouldn't expect to need anything above 5w in the resistor rating, and possibly a tenth of that.
You should only need a potentiometer, no extra resistor.
Please Log in or Create an account to join the conversation.
- smc.collins
- Offline
- Platinum Member
- Posts: 660
- Thank you received: 113
Please Log in or Create an account to join the conversation.
I just tried this with a variable power supply, a pot and a multimeter and it seemed to work.
Though, as you know the required divider ratio, I don't see any reason not to use fixed resistors.
Please Log in or Create an account to join the conversation.
- smc.collins
- Offline
- Platinum Member
- Posts: 660
- Thank you received: 113
On another note, I have a hydrualic chuck obviously. I would like a foot control to overide to open it. What's the best way to setup the chuck, a NC relay to keep it closed when the machine is powered and a overide to open it ?
Please Log in or Create an account to join the conversation.
- smc.collins
- Offline
- Platinum Member
- Posts: 660
- Thank you received: 113
andypugh post=253466 userid=723Tacho output to the two ends of the pot track, and then the wiper and one end to the drive.
I just tried this with a variable power supply, a pot and a multimeter and it seemed to work.
Though, as you know the required divider ratio, I don't see any reason not to use fixed resistors.
I did some testing today and it looks as if I have motor control in the 5-10 rpm range from 5 rpm to 1800 rpm. Runs a little slower than it would have with the reliance drive, but this drive has more current. I will do a pulley ratio change to get the spindle speeds where they need to be once I get the hydraulic hooked up and I can test the gear box ratios. Wound up with a 470ohm on R1 and a 160ohm on R2 and a quick gain adjustment and hit 6.95v per 1000rpm.
Appreciate the help so far.
Please Log in or Create an account to join the conversation.
I have several tachs, some 3v and I have one that is 30 or 36 v . None are gonna be bolt on, if they can be of use, pm me.
Please Log in or Create an account to join the conversation.
- smc.collins
- Offline
- Platinum Member
- Posts: 660
- Thank you received: 113
Will be ready to start configuring the 7i97 this week, hopefully I can manage it.
Please Log in or Create an account to join the conversation.
- Hardware & Machines
- CNC Machines
- Turning
- Small victory in the war against the Cincinnati cinturn 12u