piedmontg
Aluminum
- Joined
- Dec 10, 2007
- Location
- NW Illinois
Hi
I know this has been discussed a number of times but I ran across the following on another forum in a thread on using a VFD. Seems simple. I almost tried this earlier this year with a 15HP TECO MA 7200 that is not used very often, but decided it would be my luck to blow it out!
Anyone else try this simple approach, ie no speed control just whole shop simple switches phase conversion?
Is there something special about the Mitsubishi he is using? Is it really a VFD or just a static converter? I looked at the manual and it reads like a VFD / Inverter.
For those interested in the whole thread:
The Home Machinist! • View topic - Remotor or Rotary Phase Converter
Bob
_____
A post in a thread:
“friend of mine runs his whole shop on one VFD and most VFD's are capable of doing that. The VFD is big enough to run at least two motors at a time, and the switches to turn on the machines are at the machines. So he turns on the VFD when he walks into the shop in the morning, and turns it off when he leaves at night. The list of machines are as follows: 1, 3-axis CNC Bridgeport, a large bandsaw, 2 lathes, 1 horizontal band saw and several tool grinders. He is not careful about the two motor rule either. So far, has has lost one VFD in the past 10 years and it was to lightning.”
My question:
“I have always wanted to try the one VFD approach and am about to do some changes in the shop. Do you know which VFD he used and it Rating. I was thinking a 15HP unit would cover me, just wondered what model he used.”
His response:
“I will have to take a run up to his shop to see what brand it is”
Next Post:
“It's a Mitsubishi FR-E500, 5hp, 240vac, single phase input. I was wrong about the lightning. He had one mounted behind the BP, not enclosed. He was using an air hose blowing chips off the table and they went into the drive with the following pffft report. This one is mounted right next to the electrical panel.
He did say that if he is running the CNC Bridgeport, he will pause the program if he is starting another machine. The spindle will slow down for a couple of seconds, and then pick right back up, but the program doesn't slow down at all. Raises hell with 1/16" end mills. He does a lot of engraving of wood pictures.”
My next response:
I thanked him for the trip and said if I tried it I would post a thread.
I know this has been discussed a number of times but I ran across the following on another forum in a thread on using a VFD. Seems simple. I almost tried this earlier this year with a 15HP TECO MA 7200 that is not used very often, but decided it would be my luck to blow it out!
Anyone else try this simple approach, ie no speed control just whole shop simple switches phase conversion?
Is there something special about the Mitsubishi he is using? Is it really a VFD or just a static converter? I looked at the manual and it reads like a VFD / Inverter.
For those interested in the whole thread:
The Home Machinist! • View topic - Remotor or Rotary Phase Converter
Bob
_____
A post in a thread:
“friend of mine runs his whole shop on one VFD and most VFD's are capable of doing that. The VFD is big enough to run at least two motors at a time, and the switches to turn on the machines are at the machines. So he turns on the VFD when he walks into the shop in the morning, and turns it off when he leaves at night. The list of machines are as follows: 1, 3-axis CNC Bridgeport, a large bandsaw, 2 lathes, 1 horizontal band saw and several tool grinders. He is not careful about the two motor rule either. So far, has has lost one VFD in the past 10 years and it was to lightning.”
My question:
“I have always wanted to try the one VFD approach and am about to do some changes in the shop. Do you know which VFD he used and it Rating. I was thinking a 15HP unit would cover me, just wondered what model he used.”
His response:
“I will have to take a run up to his shop to see what brand it is”
Next Post:
“It's a Mitsubishi FR-E500, 5hp, 240vac, single phase input. I was wrong about the lightning. He had one mounted behind the BP, not enclosed. He was using an air hose blowing chips off the table and they went into the drive with the following pffft report. This one is mounted right next to the electrical panel.
He did say that if he is running the CNC Bridgeport, he will pause the program if he is starting another machine. The spindle will slow down for a couple of seconds, and then pick right back up, but the program doesn't slow down at all. Raises hell with 1/16" end mills. He does a lot of engraving of wood pictures.”
My next response:
I thanked him for the trip and said if I tried it I would post a thread.
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