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1 phase options
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Wolfgang Geiger
FELDER offers now also another option for woodworkers with single phase
supply. All 700 Series machines (except ECO models) will be equipped with an Inverter. The inverter converts 1 phase power into 3 phase power and the machine runs regular 4 HP 3 phase motors. This new option is also available at an incredible low cost of $300.00. For another $165.00 per motor ($495.00 for a full combination machine) we can also equip these machines with a variable speed control. This will provide a speed range of 2,500 - 6,000 rpm for the jointer/planer 3,000 - 6,000 rpm for the saw 1,400 - 4,700 rpm for the shaper at medium speed 2,500 - 8,300 rpm for the shaper at high speed 3,000 - 10,000 rpm for the shaper at slow speed 6,000 - 20,000 rpm for the high speed router spindle. Wolfgang |
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Geoff Shepherd
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I'm drooling! ;-) Are those speeds correct on the shaper? It looks like you have the ranges mixed up (slow/med/high). Can this system be just as economically retrofitted to my BF6-31 by any chance? How is the speed adjusted on the combi? One central dial, separate dials for each motor, or something else? ..Geoff ----- Original Message -----
From: Wolfgang Geiger <wolfgang@...> To: <felder-woodworking@...> Sent: Tuesday, April 18, 2000 3:27 PM Subject: [felder-woodworking] 1 phase options at an incredible low cost of $300.00. For another $165.00 per motor($495.00 for a full combination machine) we can also equip these machines with a |
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Rick Strom
Wolfgang:
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When a VFD, is installed on a machine, and an industrial duty scoring motor is also selected, how does Felder handle the speed of the scoring unit? Will there be two drives, one for the saw, the other for the scoring unit? Has, or will, Felder offer application notes for the customers who choose to go with the drive option? It has been my experience in applying drives to industrial applications, both large and small hp motors, that the drive itself can create some significant problems if not installed properly. Specifically, if the drive is going to be mounted in the machine, little or no effect will be noticed on the motor. However, should a customer choose to retrofit an existing machine, mount the drive on the wall and use that for his main 3 phase power source, the distance between the drive and the motor become critical. Like many users, I am going to opt for the drive option. I intend to mount the drive on the wall close to the single phase power source, and then use twist lock receptacles to move the power from one machine to the next. In my application I will install a line reactor between the motor and the drive. Line reactors remove the harmonics created by the drive. Harmonics if not removed, will shorten the life of the motor, cause early bearing failure, or both. A couple of years ago one of my engineers wrote a technical paper on the application of drives on small hp motors. I will edit this article and post it to this site with the specific points to consider. With this memo you posted several speeds that could be obtained with the application of a drive. Has Felder ran any calculations on what will happen to the torque? As you know, as you increase speed torque follows up to base speed, if you accelerate the motor beyond base speed, 60hz, torque falls off significantly. Are the drives being supplied by Felder, rated for constant horsepower, or constant torque? Rick Strom Virginia Operation -----Original Message-----
From: Wolfgang Geiger [mailto:wolfgang@...] Sent: Tuesday, April 18, 2000 6:27 PM To: felder-woodworking@... Subject: [felder-woodworking] 1 phase options FELDER offers now also another option for woodworkers with single phase supply. All 700 Series machines (except ECO models) will be equipped with an Inverter. The inverter converts 1 phase power into 3 phase power and the machine runs regular 4 HP 3 phase motors. This new option is also available at an incredible low cost of $300.00. For another $165.00 per motor ($495.00 for a full combination machine) we can also equip these machines with a variable speed control. This will provide a speed range of 2,500 - 6,000 rpm for the jointer/planer 3,000 - 6,000 rpm for the saw 1,400 - 4,700 rpm for the shaper at medium speed 2,500 - 8,300 rpm for the shaper at high speed 3,000 - 10,000 rpm for the shaper at slow speed 6,000 - 20,000 rpm for the high speed router spindle. Wolfgang To Post a message, send it to: felder-woodworking@... To Unsubscribe, send a blank message to: felder-woodworking-unsubscribe@... Visit the group web site: |
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Wolfgang Geiger
Rick:
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I finally got an answer back from our R&D department regarding the variable frequency drive (VFD). I'll like to comment again to your questions: 1. The industrial scoring unit is not possible with the single phase VFD. The inverter is designed for 4 HP. The industrial scoring unit would add 1 HP and the inverter would be too small. For single phase we still have the belt driven scoring unit available. Larger inverters are available but will not be supplied by FELDER because they cannot be fitted inside the electrical compartment and need to be mounted on the outside of the machine or at another location. 2. The VFD is rated for constant Power output (HP) that means of course that the torque changes when changing the speed. The formula Power = torque x speed explains the relation between torque and speed. When the speed increases the torque is decreased and vice versa. VFDs are also available with variable torque rating (but not supplied by FELDER). These VFD's measure the required torque on the motor shaft. The variable on these VFD's is the motor speed (torque = power / speed). When the torque is increased the speed decreases. I hope I could answer your questions if you want more detailed information please give me a call at 800-572-0061 and we can discuss this in more detail. Wolfgang ----- Original Message -----
From: Rick Strom <rstrom@...> To: <felder-woodworking@...> Sent: Wednesday, April 19, 2000 2:54 AM Subject: RE: [felder-woodworking] 1 phase options Wolfgang:motor is also selected, how does Felder handle the speed of the scoring unit?to go with the drive option? It has been my experience in applying drives toor no effect will be noticed on the motor. However, should a customer choosemount the drive on the wall close to the single phase power source, and then useHarmonics if not removed, will shorten the life of the motor, cause early bearingpost it to this site with the specific points to consider.happen to the torque? As you know, as you increase speed torque follows up tobase speed, if you accelerate the motor beyond base speed, 60hz, torque fallsoff significantly. Are the drives being supplied by Felder, rated forconstant horsepower, or constant torque?an Inverter. The inverter converts 1 phase power into 3 phase power and theavailable at an incredible low cost of $300.00. For another $165.00 per motor($495.00 for a full combination machine) we can also equip these machines with afelder-woodworking-unsubscribe@...
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