Never simple is it! Mach, machine halts

Quote:

---

Originally Posted by gavztheouch

Ivan is the name you will see if it is indeed a cracked/Illegal copy

Not surprised to see strike cutting corners again, I don't know how the law works if you bought an illegal copy unawares but the penalties for having hooky software on your pc can be tough.

---

I do know how the law works and it is pretty brutal when it comes to people flogging stolen software as a business. Shinobiwan you may want to keep screenshots and copies of any communications with mach and screenshots of strike's website saying the machine comes with mach if you are going to be having a day in court...

Strike is long gone and the guy running it has been involved with the Police for stealing peoples money. I'm pretty sure adding software piracy to the list isn't going to add whole lot more effect!

Quote:

---

Originally Posted by Shinobiwan

Strike is long gone and the guy running it has been involved with the Police for stealing peoples money. I'm pretty sure adding software piracy to the list isn't going to add whole lot more effect!

---

I would still mention it to the guys at Mach, you have lost a lot of money already at other peoples hands. If the people at Mach knew that you had paid for a licence already they might be sympathetic & let you have the licence you had paid for or failing that let you have one at a reduced rate.

The machine is looking great.

Quote:

---

Originally Posted by Shinobiwan

Cheers mate.

Remember its one of those shitty Chinese VFD's so it'd probably blow a capacitor or something if you tried to up the ramp time lol Safer to do it in software.

I have added a line in my post to include an G04 P4 right after the G3 but your way looks better.

---

What have you currently got the ramp up/down (PD14,PD15) times set to? I don't remember exactly (will check), but I set mine to no more than a couple of seconds and it's fine. If the acceleration is set too high the DC bus voltage in the VFD will get too high, and the inverter will cut out for protection so it's very unlikely to break anything. Try changing it gradually...
On a machine with gearing etc, like a lathe, it's not sensible to set the ramp up time to something very high, since it would just wearing out the gearbox unnecessarily.

Quote:

---

Originally Posted by Shinobiwan

I have added a line in my post to include an G04 P4 right after the G3 but your way looks better.

---

Better letting Mach do it because then if for instance you use G-code that hasn't come from your Cam or Post chances are it won't have G4 dwell command, then your pissing about editing the Code. No big deal to do but could be if you forget and delv the cutter into material before up to speed.!!

Quote:

---

Originally Posted by Jonathan

What have you currently got the ramp up/down (PD14,PD15) times set to? I don't remember exactly (will check), but I set mine to no more than a couple of seconds and it's fine. If the acceleration is set too high the DC bus voltage in the VFD will get too high, and the inverter will cut out for protection so it's very unlikely to break anything. Try changing it gradually...
On a machine with gearing etc, like a lathe, it's not sensible to set the ramp up time to something very high, since it would just wearing out the gearbox unnecessarily.

---

How will accelerating too fast cause the DC bus to go overvoltage?

Also, how is accelerating a geared machine too quickly with a VFD any different from turning the motor on with a switch?

Quote:

---

Originally Posted by m_c

How will accelerating too fast cause the DC bus to go overvoltage?

---

I was referring to both the ramp up and down settings, so clearly that comment is regarding negative acceleration...

Quote:

---

Originally Posted by m_c

Also, how is accelerating a geared machine too quickly with a VFD any different from turning the motor on with a switch?

---

If the user is using the original motor, then it's not much different, however it's not uncommon for people to get a bigger motor than the machine was designed for, which could potentially achieve higher acceleration than the original motor. I guess it was hardly worth mentioning in this context. Also, in general it is sensible to warn to be conservative with these settings as they could cause problems later on - for instance on a lathe swapping to a larger chuck or faceplate can greatly increase the inertia (due to power 4 relationship) and as a result cause the drive to cut out.