Looking for a reputable company to buy used and refurbished CNC Machinery parts? At ITSCNC, we have one of the largest inventories of manufacturing fadal parts in the US, including circuit boards, Rotary Parts, USB Mass Storage, Axis Amplifier, Circuit Components, Ballscrews, Fadal Spindle, circuit board, etc. If for any reason you are not completely satisfied with you purchase simply return in its original condition within 30 days.
Each of the Fadal parts comes with an instruction manual containing the safety instructions to avoid any kind of malfunctioning or personal injuries. The first step of any Fadal parts installation is to cut off the electricity supply; one must disconnect all power supply to the machine before adding any component. It is always good to go for qualified service personnel for safe installation or servicing.
Let’s Talk about Spindle Motor Encoder, Baldor, ENC-0004
One of the most common problems with a Fadal Spindle Drive running in the Vector mode is caused by the spindle motor encoder. Missing encoder pulses will basically confuse the drive and cause vector miscalculations which result in too much current output to the motor. One sign is that the load meter will usually "peg" or pulsate. Another sign is the RPM will not be stable. Too often the drive is misdiagnose as being "bad" when it's actually the encoder causing the problem.
The best method of testing a Fadal Spindle Motor Encoder is to use a oscilloscope to view the A/B channels. Pulse errors can easily be detected. With our new Baldor H2 drive, we simply switch the drive into open loop Inverter mode and you can see the encoder RPM calculations changing erratically with the drives diagnostics feature. With the older Baldor drives, as you rotate the spindle, the drive keypad will display the calculated rpm.
One simple way to manually test an encoder is by using a FLUKE meter, set it to AC input. When checking from the encoder supply power common to one of the A+, A-, B+, B- encoder signals on the spindle drive encoder input terminal, you should see approximately 2.8 VAC when turning the spindle at the orientation speed. The digital pluses look like an AC voltage to a FLUKE meter.
Another important way to test the encoder is by checking the state of each channel. With a voltmeter in the DC setting, from encoder supply power ground to the A+ encoder input, you should measure either 0 or 3.5 VDC. The state is either high or low. If A+ is high (3.5 volts) then the A- channel must be low; A+ and A- can never be the same. The same logic goes for the B+ and B- channels. If you rotate the spindle and let it stop, you'll should see the states changing.
About ITSCNC.COM
ITS - Independent Technology Service Inc. was founded in 1980 by Dan Strizich repairing disk/tape drives and performing data recovery services. In 1992 "ITS" was chosen by Fadal Engineering founding family members and manager Richard Kuehne to repair circuit boards.
In 1994 we started production QC and Functional Testing for all the machine electronic circuit boards. This was done using our GenRad In-Circuit Testers and Fadal Functional Testers.
Contact us
Address: 9182 Independence Ave. Chatsworth, Ca. 91311
Order Desk: 1-800-342-3475
Fax: 1-818-727-1750
Email: parts@itscnc.com
Website: www.itscnc.com
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