Re: [Emc-users] VFD Noise

On 1/28/2016 8:18 PM, Jim Craig wrote: > For future projects I will choose GS2 drives and will will not ever buy > another GS1 drive. To me they are not worth the cost savings. Sounds like good advice. Dave -- Site24x7

Re: [Emc-users] VFD Noise

In my experience, the high-end VFDs also show filters on input and output. However, the ones I've taken apart seem to have some output filtering On Thu, Jan 28, 2016 at 11:39 AM, Dave Cole wrote: > The GS1 and even the GS2 are basic VFDs which do what they say and then

Re: [Emc-users] VFD Noise

On 01/28/2016 08:14 AM, Jim Craig wrote: > An update and semi success story. > > After dinking with the noise from the GS1 VFD for way to many hours. I > was finally able to get rid of the noise. I removed the drive. I put in > a run capacitor and have the coolant pump running off the original >

Re: [Emc-users] VFD Noise

The GS1 and even the GS2 are basic VFDs which do what they say and then some. I've used them in control boxes with PLCs and PCs but they are usually the number 1 noise producers in the panel. If you look at their installation instructions they usually include a filter on the input of the drive

Re: [Emc-users] VFD Noise

The high end VFDs I've used recommend chokes on the output only if the motor lead runs are hundreds of feet unless the install needs to be super clean RF wise. Input chokes or drive isolation transformers are pretty common for the input, although I have seen a number installed without them. But

Re: [Emc-users] VFD Noise

Based on my limited experience the noise from the GS1 must be much worse than the GS2. I am completely happy with the GS2 drive. As you said it does everything it claims and does it well. In fact when trying to find the noise problem I was extremely surprised that it was the 1/4hp GS1 drive. I

Re: [Emc-users] VFD Noise

An update and semi success story. After dinking with the noise from the GS1 VFD for way to many hours. I was finally able to get rid of the noise. I removed the drive. I put in a run capacitor and have the coolant pump running off the original contactor. I wound up using a 3uf capacitor. I

Re: [Emc-users] VFD Noise

You don't need to disconnect the shields at one end on the power conductor shields. Those are normally connected at each end. Dave On 1/22/2016 5:23 PM, Jim Craig wrote: > I spent all afternoon looking for and trying to remove ground loops. I > think I found all that I can eliminate. I have a

Re: [Emc-users] VFD Noise

Are you using decent filters?? GS1 and GS2 drives tend to pump a lot of RF noise up the power supply line. I've used the AD filters with good success. I think the one I used was about $80. If you are using cheap Ebay filters sometimes you get what you pay for. Have you put a scope on

Re: [Emc-users] VFD Noise

On Friday 22 January 2016 12:51:17 Jim Craig wrote: > Hey all, > > I have been troubleshooting some noise that I have on my servo > encoders. I have isolated the noise source to be the 1/4hp Automation > Direct GS1 VFD that I have running my coolant pump. If the coolant > pump is not running then

Re: [Emc-users] VFD Noise

Noise problems can be infuriating! Do you need a VFD for the coolant pump? Most people just get a large Little Giant pump or a Superior pump and run it off 120VAC. If you want to control the amount of coolant, you can open a valve to divert some of the output back to the reservoir, or close a

Re: [Emc-users] VFD Noise

I also forgot to tell you about this wiring guide. http://mesaus.com/downloads/best_practices.php On 1/22/2016 11:51 AM, Jim Craig wrote: > Hey all, > > I have been troubleshooting some noise that I have on my servo encoders. > I have isolated the noise source to be the 1/4hp Automation Direct

Re: [Emc-users] VFD Noise

Often a small 3 phase motor will run fine on single phase, you might put a run cap between the phase to balance it like a RPC does. If it will start on single phase it will run. If it won't start then a start cap would be needed. http://gnipsel.com/shop/rpc/rpc.xhtml I don't see a problem

Re: [Emc-users] VFD Noise

On 22 January 2016 at 18:13, John Thornton wrote: > Often a small 3 phase motor will run fine on single phase, you might put > a run cap between the phase to balance it like a RPC does. Good point. I have been running my coolant pumps this way for years. The blue motor-run

Re: [Emc-users] VFD Noise

On 22 January 2016 at 22:23, Jim Craig wrote: > Anyway after all of this the noise is still present when running the GS1 > drive for the coolant pump. I think I will try to source a run capacitor > and switch back to a contactor for start stop on the coolant pump.

Re: [Emc-users] VFD Noise

Just adding a filter may not help unless you add it correctly. My recommendation is that you follow the best practices guide referenced by John Thornton. On Jan 22, 2016 3:56 PM, "Dave Cole" wrote: > Are you using decent filters?? > > GS1 and GS2 drives tend to pump a

Re: [Emc-users] VFD Noise

I spent all afternoon looking for and trying to remove ground loops. I think I found all that I can eliminate. I have a couple minor ones due to the mounting of my PC motherboard/SSD that I don't think I can remove without making new mounting fixtures. I did find one that I was sure was going

[Emc-users] VFD Noise

Hey all, I have been troubleshooting some noise that I have on my servo encoders. I have isolated the noise source to be the 1/4hp Automation Direct GS1 VFD that I have running my coolant pump. If the coolant pump is not running then there is no noise on the encoders and the machine maintains

[Emc-users] VFD Noise

Hello, I have 3 axis machine I am working on that has a Teco FM50-202-C drive to control the spindle. The drive is a 220V drive. I am using single phase into the drive. 2 HP 3 phase spindle motor. My plan is to use an arduino to control a few accessories on the machine. Noise from the drive is

Re: [Emc-users] VFD Noise

never run cables close together, they will inductively or capacitively couple noise screening helps metal cases around subcircuits and screened cables with correct earthing use a real scope to view the noise avoid common mode currents (multiple grounds can cause this) use better power supply

Re: [Emc-users] VFD Noise

On 21.01.13 04:21, Mike Cinquino wrote: The drive and arduino are in the same electrical box right now. I am thinking of removing the drive and placing it in it's own box. Yup, given that the drive is proving noisy: a) A separate metal enclosure for any electronics, including the arduino.

Re: [Emc-users] VFD Noise

On 21 January 2013 09:21, Mike Cinquino mcinqu...@gmail.com wrote: Has anyone seen this before? I know VFD's are noisy devices. Looking for any advice to quickly eliminate the problem. You probably need an input filter on the VFD. They appear to send noise back down the power supply cables.

Re: [Emc-users] VFD Noise

Thank you, all the suggestions are good advice. I will attempt as many as I can to get the problem solved starting with a enclosure just for the VFD. This will also allow me to isolate the 220v. The main control box can all be powered with 110v. Are VFD's less noisy if they are fed 3 phase? I

Re: [Emc-users] VFD Noise

On Mon, Jan 21, 2013 at 11:56 AM, Mike Cinquino mcinqu...@gmail.com wrote: Thank you, all the suggestions are good advice. I will attempt as many as I can to get the problem solved starting with a enclosure just for the VFD. This will also allow me to isolate the 220v. The main control box can

Re: [Emc-users] VFD Noise

On 01/21/2013 03:02 PM, Clint Washburn wrote: Can single phase be used on a three phase filter? The reason I ask is because I am rebuilding my lathe so it can be used on both single and three phase. Thanks, Clint Washburn On Jan 21, 2013, at 2:37 AM, andy pugh bodge...@gmail.com wrote: