[mactec54]

In short, PD003 is the operating frequency only and is meant to be controlled through a couple of methods in certain modes. In other modes, PD003 is not used at all, instead the operating frequency is controlled by external sources or communication ports.

PD003 is always in use it is one of the Main Parameters to be set and forget to what ever the Max Spindle or Ac motor Hz setting is

Do you put a block of wood under your car's accelerator pedal because you want it to only go at half speed when you start it up, let us no how this works out for you

Regarding running the spindle below max frequency (400 Hz for my spindle). Unless the VFD is running at max operating frequency all the time (max RPM), the VFD's operating frequency will be routinely less than max and therefore the spindle will be at less than max frequency. This is perfectly safe! This is what these VFDs are designed for in the context of a variable frequency spindle. The only time this is unsafe is when the parameters mentioned above are set incorrectly and an operator is able to set the operating frequency (through whatever method they configured the VFD for) beyond the rated frequency rang of the spindle .

This is where I don't know what you are talking about, nobody has said that there is any problem with running your spindle at any speed in it's range 6,000 RPM to 24,000RPM if the Parameters are set correct

[justinwol]

I feel bad after you've been willing to engage me all this time, but you are probably not going to like me after this.

This is where I don't know what you are talking about, nobody has said that there is any problem with running your spindle at any speed in it's range 6,000 RPM to 24,000RPM if the Parameters are set correct

You did and is what triggered the whole conversation because I decided to heed your warning and make sure I understood and set things up properly. It was good to do so because it pushed me to understand the VFD far more thoroughly than I probably otherwise would've. Here is your quote:

What is the reason for this, if there is a power cut the only Parameter that will be active is PD003 so if this is set at 120Hz then your spindle on startup will try and start using 120Hz we all know what happens when these spindle try to start / run on a lower than rated Frequency

You seem to think that the VFD will have an operating frequency of 400 Hz while running at 6000 RPM. This is wrong, it will have an operating frequency of 100 Hz. The error you make in this statement is that the rated frequency and the operating frequency are not the same. Yes, if the spindle tries to run with a "rated frequency" less than its rating it will be damaged - your gas pedal analogy. The rated frequency (PD004) needs to be set properly and for this spindle should be set to 400 Hz (which is NOT changed on a power breakdown), this is a "set and forget" parameter. The operating frequency is variable during operation and limited in range by PD005 (max) and PD011 (min) - this is how the speed of the spindle is controlled and what you don't seem to understand. You cannot set PD003 = 400 and expect it to stay at 400 (PD001 = 0 and PD002 = 0 or keypad only mode). PD003 will change with changes made to the speed of the spindle - that is what this parameter is, the "operating frequency" not the "rated frequency". As I've stated before in this thread, even if PD003 is set below PD011, PD011 will override PD003's setting to ensure no "false operation" of the spindle occurs. I've attached the relevant portion of the manual to this post. Though I don't think it will matter to you, your experience seems to have closed your mind.

You are saying that running the spindle at 120 Hz will damage the spindle - literally, you explicitly say this above. No it will not. It does not matter what speed the spindle starts at if the speed is within the operating frequency range of the spindle, in my case 100 Hz (6000 RPM) to 400 Hz (24000 RPM) and PD004 is properly set to 400 Hz (the rated frequency). The VFD changes the speed of the spindle by changing the operating frequency and in some modes PD003 is used to set initial speed on RUN or store changes made to it, thus controlling the speed of the spindle. You don't seem to understand that the spindle will also start at 120 Hz in PD002 = 1 (when PD003 is bypassed), if the potentiometer on the VFD is set to 120 Hz, so long as 120 Hz is above PD073 (min analog operating frequency). "Set to" literally just means turning the knob on the front of the VFD. Internally this supplies a voltage from 0-5V (PD070 = 1) which is interpreted through the operating frequency range limiting parameters, PD072 and PD073, setting the current operating frequency. This is perfectly fine and normal operation.

When I ask you how the VFD changes the spindle speed, you don't answer. You just keep stating the same thing with no supporting arguments and an underline does not make the statement more meaningful - arguments supporting it do:

PD003 is always in use it is one of the Main Parameters to be set and forget to what ever the Max Spindle or Ac motor Hz setting is

Thanks for your help, I'm sure you know a lot about these things, but your information on PD003 and the operating frequency for the HY02D223B is not good. You seem to be setting PD003 (operating frequency) to the max rated frequency as a "best practice" then changing to modes that change the operating frequency anyways. I think what is confusing you is that in this case PD003 will stay at 400 Hz because it is bypassed and not changed/used in other modes like PD002 = 1. However, you seem to think this is doing something important, it is doing nothing.

I leave this here for anybody else coming through to read. Just remember that Mac has "done hundreds of them and repaired them also," while this is my first VFD. Decide for yourself.

This is clearly the end of the conversation, I will not participate anymore,
Good bye.

[mactec54]

I feel bad after you've been willing to engage me all this time, but you are probably not going to like me after this.



You did and is what triggered the whole conversation because I decided to heed your warning and make sure I understood and set things up properly. It was good to do so because it pushed me to understand the VFD far more thoroughly than I probably otherwise would've. Here is your quote:


You seem to think that the VFD will have an operating frequency of 400 Hz while running at 6000 RPM. This is wrong, it will have an operating frequency of 100 Hz. The error you make in this statement is that the rated frequency and the operating frequency are not the same. Yes, if the spindle tries to run with a "rated frequency" less than its rating it will be damaged - your gas pedal analogy. The rated frequency (PD004) needs to be set properly and for this spindle should be set to 400 Hz (which is NOT changed on a power breakdown), this is a "set and forget" parameter. The operating frequency is variable during operation and limited in range by PD005 (max) and PD011 (min) - this is how the speed of the spindle is controlled and what you don't seem to understand. You cannot set PD003 = 400 and expect it to stay at 400 (PD001 = 0 and PD002 = 0 or keypad only mode). PD003 will change with changes made to the speed of the spindle - that is what this parameter is, the "operating frequency" not the "rated frequency". As I've stated before in this thread, even if PD003 is set below PD011, PD011 will override PD003's setting to ensure no "false operation" of the spindle occurs. I've attached the relevant portion of the manual to this post. Though I don't think it will matter to you, your experience seems to have closed your mind.

You are saying that running the spindle at 120 Hz will damage the spindle - literally, you explicitly say this above. No it will not. It does not matter what speed the spindle starts at if the speed is within the operating frequency range of the spindle, in my case 100 Hz (6000 RPM) to 400 Hz (24000 RPM) and PD004 is properly set to 400 Hz (the rated frequency). The VFD changes the speed of the spindle by changing the operating frequency and in some modes PD003 is used to set initial speed on RUN or store changes made to it, thus controlling the speed of the spindle. You don't seem to understand that the spindle will also start at 120 Hz in PD002 = 1 (when PD003 is bypassed), if the potentiometer on the VFD is set to 120 Hz, so long as 120 Hz is above PD073 (min analog operating frequency). "Set to" literally just means turning the knob on the front of the VFD. Internally this supplies a voltage from 0-5V (PD070 = 1) which is interpreted through the operating frequency range limiting parameters, PD072 and PD073, setting the current operating frequency. This is perfectly fine and normal operation.

When I ask you how the VFD changes the spindle speed, you don't answer. You just keep stating the same thing with no supporting arguments and an underline does not make the statement more meaningful - arguments supporting it do:


Thanks for your help, I'm sure you know a lot about these things, but your information on PD003 and the operating frequency for the HY02D223B is not good. You seem to be setting PD003 (operating frequency) to the max rated frequency as a "best practice" then changing to modes that change the operating frequency anyways. I think what is confusing you is that in this case PD003 will stay at 400 Hz because it is bypassed and not changed/used in other modes like PD002 = 1. However, you seem to think this is doing something important, it is doing nothing.

This is clearly the end of the conversation, I will not participate anymore,
Good bye.

I did not read any of what you have posted because you are just repeating the same thing all the time, you are so lost in this I don't know if you realize what you are even posting, being a first time user you will be an expert in no time if you can ever understand how the VFD Drive is Programed

Enjoy it while you can

[justinwol]

( Dangit, I was actually really hoping to move on... )

I did not read any of what you have posted

That makes sense now.

Summary of all this in 3 easy to understand steps:

1. PD003 is the "operating frequency" or the desired output frequency of the VFD driving the motor (determines motor's speed) in digital operator mode*. The VFD reads the value stored in PD003 to set the operating frequency when using the keypad**. The keypad merely changes the value of PD003 when controlling the speed of the spindle. This value in the VFD's memory is not used in other modes, instead analog inputs or communication ports set the operating frequency.
2. The operating frequency, in all modes, is limited by PD005 (max operating frequency), the operating frequency cannot go higher than this setting, and PD011 (frequency lower limit), it cannot go lower than this setting.
3. PD004 is the rated frequency of the motor and should not be changed.

*The set operating frequency has to be between the min-max limits or the upper or lower limit will override the operating frequency, in all modes. The output frequency and the set operating frequency can be read on the VFD's display. I.e. If the operating frequency is set to 50 Hz via any mode (keypad, analog, communication port), but the lower limit (PD011) is set to 100 Hz, the output frequency will be 100 Hz. You can read this on the display. Set frequency will read 50 Hz, output frequency will read 100 Hz and the spindle will be spinning at 100 Hz, not 50 Hz.
**In the manual the keypad is called the "digital operator".


This is literally what the VFD is for and how it works. VFD's vary the frequency of the input power to the motor to control the motor's speed. On these VFDs you can control the input frequency to the motor, or the VFDs output frequency, in a few ways. The mode used in this discussion is "digital operator" mode - the keypad. The keypad changes the value stored in PD003 to the desired output frequency and the VFD reads this value and implements it - if it is between P005 and PD011. (I don't know if I can say this any more clearly or how many different ways I can say it, Mac won't read it anyways )

But don't take my word for it, if your inclined to test and verify what random people on the internet say, see for yourself. Using keypad only, change the speed of the spindle and go check PD003's setting. PD004, PD005 and PD011 need to be set correctly first.

Personally I followed Mac's advice to a T (maybe not such a good idea), but it all broke down when I discovered (by actually doing his advice on my VFD) that it doesn't work that way. PD003 will not stay at 400 Hz if you use the keypad to change the speed of the spindle, obviously if you've read any of this or the manual. My VFD literally would not allow me to follow his advice, so I had to learn more. This worried me greatly at first and thus the lengthy bit of this thread proceeded, which he didn't read, unfortunately.

Mac won't read this, but for others who'll actually read all this. I attached the same picture he just did, but with the relevant parts highlighted and the parts he skipped (intentionally or not, I don't know. Not sure what his intentions are).

[justinwol]

@handlewanker It is a 3 phase 220V 400Hz water cooled spindle. Rated for 6000-24000 RPM. The water cooled bit just allows the spindle to operate at a lower rpm where as an air cooled spindle (of the same variety) needs a higher rpm in order to generate enough air flow for cooling. These VFDs are 3 phase output drives. They can receive different inputs and still output 3 phase.

[handlewanker]

Thanks, that makes sense...…..the parameters and settings you mentioned are totally not on my instruction sheet......my motor is a plain 3 phase 3/4 HP 3,000 rpm model..... so I assume your VFD has different characteristics than mine and is configured to drive the high revving motor you have...…...no problem as I have my AT1 model set for my needs.
Ian.

[handlewanker]

What would happen if you connected the 24,000 rpm motor to a 50/60 hz 3 phase supply....can it be run in such a manner or will it go pooooof as the amps surge.....does the VFD ensure a soft start from zero rpm?
Ian.

[handlewanker]

I can just see Mac ending with....."whatever"......my father would have said , "don't come crying to me when you burn your fingers" etc.
Ian.

[justinwol]

To be fair, I'm pretty sure Mac does have some good knowledge about these drives (and doesn't just copy and paste the same list of parameters appended with a "poof the magic dragon" warning), but has gone all this time without properly understanding this part in particular, because if the base frequency (PD004), the upper and lower frequency limits (PD005 and PD011) are set correctly, PD003 can be safely changed to anything with the keypad because the output frequency will be limited to the range set by limit parameters - that is the point of those parameters and the manual explicitly says this, see PD011. Otherwise in other modes, PD003 is simply not being used at all. Setting it to 0 or 400 Hz and then using a different mode like analog or the communication port, PD003 is just not used at all. So he sets PD003 to 400 Hz as a "best practice" then immediately bypasses it by changing to another mode that sets the operating frequency in a different way.

Or he's gone all this time misunderstanding this because he doesn't read posts.

Oh well, this misunderstanding of his causes no harm, as his experience can attest, so I really need to move on. Hopefully this helps some other first time or even long time users.

Edit: Because this has come up earlier in the thread. I guess I should also clarify that if PD004, PD005 and PD011 are set correctly, setting PD003 below max frequency will NOT limit the spindle from reaching max RPM (obviously).

[handlewanker]

Hi....is PD003 a fixed memory thing for your particular motor once you set it to whatever your preferences are and you don't need to change it again ever....unless you change your motor.

That is, if you set it at whatever...….. if you get a power down PD003 will remain fixed in memory for your motor with whatever setting you originally set it at.....this would prevent you from inadvertently starting up with the wrong base settings that your motor needs due to the manual settings being deleted in the power down.

So, PD005 and PD0011 are set at the upper and lower frequency limits (desired speed range) ….that you want to set them to......is PD003 the default that the VFD will use and refer to when everything goes to Hell in a hand basket like a power down......the VFD then is in a safe mode for whatever motor you are attaching it to…..as I understand it.

I think Mac said that PD003 once set does NOT need to be done again ….ever....it becomes a fixed reference default in memory unless you change it again for some obscure reason.

Completely disregard this post if it does not make sense......I'm totally new to VFD's and their set-ups.
Ian.

[justinwol]

Mac is saying that PD003 is a set and forget parameter, but it is not, he does not understand this parameter at all. He understands the others as far as I can tell, but not this one.

The warning he gives is that in the event that there is a power loss and the VFD loses some or all of its settings or reverts to factory defaults (or a factory reset is done, like I did) that PD003 will be what the motor starts up at. This is true in so far as the operating frequency will be set to PD003, but remember that the set operating frequency is NOT the actual output frequency of the drive. In this case, and I've read other threads on this where Mac is responding with his bad information, the spindle will try to start at PD003's value because PD002 will have also been reset to 0 (keypad mode) if the drive was previously in a different mode, but if PD005 has been reset, it will be back to the default of 50 Hz. The spindle will then start at 50 Hz because PD005 is limiting the output to 50 Hz and you will not be able to reach maximum RPM until this is corrected. Further, PD004 will also have been reset to 50 Hz and these two combined make for a very bad scenario for the equipment! Setting PD003 to 400 Hz will not prevent this from happening as it doesn't prevent PD004 and PD005 from being reset. In this case, you need to immediately shutdown the spindle and check all the parameters.

PD003 is a digital data value in the VFD computer's memory that stores the value for the operating frequency, or if it helps to think of it as the "requested output frequency". The keypad digitally changes this value and the VFD's computer reads this value and changes the output frequency accordingly. This value is only read when in digital operator mode (PD002 = 0).

Edit: Sorry I've edited this a few times, if you read it right away you might have missed some of the edits.

[justinwol]

I edited the two previous posts quite a bit, thankfully as I made some bad typos. Definitely reread them if you haven't Ian.

[mactec54]

Mac is saying that PD003 is a set and forget parameter, but it is not, he does not understand this parameter at all. He understands the others as far as I can tell, but not this one.

The warning he gives is that in the event that there is a power loss and the VFD loses some or all of its settings or reverts to factory defaults (or a factory reset is done, like I did) that PD003 will be what the motor starts up at. This is true in so far as the operating frequency will be set to PD003, but remember that the set operating frequency is NOT the actual output frequency of the drive. In this case, and I've read other threads on this where Mac is responding with his bad information, the spindle will try to start at PD003's value because PD002 will have also been reset to 0 (keypad mode) if the drive was previously in a different mode, but if PD005 has been reset, it will be back to the default of 50 Hz. The spindle will then start at 50 Hz because PD005 is limiting the output to 50 Hz and you will not be able to reach maximum RPM until this is corrected. Further, PD004 will also have been reset to 50 Hz and these two combined make for a very bad scenario for the equipment! Setting PD003 to 400 Hz will not prevent this from happening as it doesn't prevent PD004 and PD005 from being reset. In this case, you need to immediately shutdown the spindle and check all the parameters.

PD003 is a digital data value in the VFD computer's memory that stores the value for the operating frequency, or if it helps to think of it as the "requested output frequency". The keypad digitally changes this value and the VFD's computer reads this value and changes the output frequency accordingly. This value is only read when in digital operator mode (PD002 = 0).

Edit: Sorry I've edited this a few times, if you read it right away you might have missed some of the edits.

Now you are saying the same as I have been, make up your mind :wave:

As far as your VFD Drive goes it was not operating as normal from the KeyPad, I knew from the start that you had something different, the fact that it had been partly programed by someone else with a twist was that someone had a play or repaired it, and changed some of the Hidden Parameters to get it to work, which can be a normal thing to do especially if it had been getting a LV fault which is very common on these drives

There is a lot that you don't know and likely to never know, there are Hidden Parameters used to change how the different functions work

Hidden Parameters you can not see these Parameters without a code number entered, in your case they have changed some of these to get your Drive to function this was most likely done when it was repaired

Here is a snip of some of the hidden Codes these all relate to each of the regular Parameter you can see when doing a normal PD programing each one of these hidden Parameters change how each function works from

a Key Function to voltage Amps Frequency Etc, so some more fire for your uneducated knowledge of how these VFD Drives work

pd202 = 1=2
pd203 = 0
pd204 = 0
pd205 = 255
pd206 = 11
pd207 = 400
pd208 = 370
pd209 = 1.1
pd210 = 40731
pd211 = 65535
pd212 = 3032
pd213 = 0
pd214 = 1
pd215 = 120
pd216 = 1
pd217 = 80
pd218 = 0
p219 = null
pd220 = 2
pd221 = 10
pd222 = 10
pd223 = 2
pd224 = 180
pd225 = 10
pd226 = 10
pd227 = 1000
pd228 = null
pd229 = null
pd230 = 255

[justinwol]

As far as your VFD Drive goes it was not operating as normal from the KeyPad, I knew from the start that you had something different

How does the keypad normally operate? Nothing has changed from when I first started this thread. The keypad is operating the exact same as when I first turned it on and after the factory reset. The errors were still there after the reset. After I've cleared the errors, they have not returned and the spindle continues to works fine as it did before the reset.

I have said from the beginning that PD003 changes with the keypad because that is how the keypad controls the output frequency and that is still the case. There are three primary ways to control the output frequency, digital operator mode, analog mode, communications port. These are all perfectly normal modes of operation, the keypad isn't special.

Please answer, how does the keypad control the motor's speed exactly?

I have not being saying anything different from the start - you just haven't been reading my posts...

I have never claimed to know lots about these VFDs. I've repeated that I'm a first time user a few times.

[justinwol]

Sorry, forgot to answer one of your questions. If you change motors with different ratings, you will have to change all the base parameters to match the new motor, definitely not just PD003. PD003, if using the drive in digital operator mode, will need to be set anywhere in the min-max range for the new motor, or the drive will override it with the upper or lower limit parameters. I.e., if you have a new motor with a rating of 100 Hz - 200 Hz and the lower and upper parameters are set to this, even if PD003 was previously set to 400 Hz from the previous motor and wasn't changed, the output frequency will be limited to 200 Hz.

PD003 does not have a factory default. This is where the confusion might lie. It remembers its previous setting even if all the others are reset. This Mac knows as he's stated this already, but because he misunderstand exactly what PD003 is and does, his "best practice" and advice on this parameter isn't good.

if there is a power cut the only Parameter that will be active is PD003y

Meaning if the settings are all reset, PD003 will remain at its previous setting, not having a factory default. In this case PD003 will not save your spindle or drive no matter what it is set to, you need to immediately check all the parameters. Proper understanding of the VFD will help save the equipment, not just one parameter that does nothing in this case.

In the event of a loss of settings, as far as I'm aware, there is no one setting that will save your equipment and to say so is bad information. Most certainly not PD003!

Edit: sorry my example was bad it had the wrong frequency range! I had RPM in my head not Hz. Updated it to 100 - 200 Hz.

[handlewanker]

Well, I'm wee bit at sea with this as I only run a VFD in the simplest mode which is factory default...…..it's mainly just to have a speed control for my motor.....deceleration and braking times are not a desire.

After reading the manual you posted and the PD003 parameter...……..I interpreted that function like this :-……….as the fall back one when all else had collapsed to factory default if you had a power down.

I was under the impression that after a power down, and the VFD was back on line again, PD003 would be the only command setting that stays there no matter what or until you intentionally change it for some reason.....it is virtually cast in stone forever until changed...….and all other setting after a power down (that you have made)...…….will be canceled to factory default, so they would not impact on your VFD provided PD003 was still set to your motor requirements.

After a power down it would be necessary to reset the functions that you want to have running.....but PD003 is not in that box and should not be altered once set.

What exactly is the definition of a power down?...….I would think it would mean a removal of all power while the VFD was running...……..whereas if you stopped the VFD and then switched it off at the wall socket …. a safe power down...….. once you switched the VFD back on again the settings you previously made should be there as they were saved to memory during the safe switch off.

My impression is that if the VFD was in a sudden loss of power situation there would be no time for the VFD to back out and shut down safely with the setting you need for whatever you are doing...…..hence the need for PD003 to be alive and kicking after the start up again...…..and this could happen when you are not there..... …...with a resumption of power the VFD would get back on line but without the settings you intentionally set......as far as I can interpret PD003 is the only man standing at the wheel when that happens.

The high question is.....why would you ever reset PD003....at any time..... if you are still connected to the same motor continuously......wouldn't that defeat the function of PD003 as a fall back safety net?
Ian.

[justinwol]

Ian, this is the bad information I'm talking about.

That is not the function of PD003 at all and it shouldn't be thought of as a safety feature in the event of a settings loss. It won't do any harm either, but it won't save your equipment in the way you described if you were counting on it. I already described why in the two previous posts and also what exactly happens in a power loss resulting in reset settings. I'm not speculating or theorizing, I've already done all of this on my VFD, including a factory reset, and verified that the VFD operates this way and exactly as the manual describes.

The whole idea that PD003 can't and shouldn't be changed is absurd - it literally controls the primary purpose of the VFD in digital operator mode, hence why it is called the "Main frequency". Now what is the primary purpose of a VFD? To control the speed of a motor by varying the frequency of the power supplied to the motor and PD003 is this frequency in keypad mode!

Why do you think PD003 is bypassed in other operating modes? Because this main frequency is now being controlled by a different input source, re-read PD002. And this all might start to make sense.

Anyways, I don't think I can elaborate on this anymore than I have. At this point the only thing you or anyone reading this can do is verify this themselves. Put the VFD into keypad mode, change the speed with the keypad, then check PD003. You will see that PD003 has now changed to the setting made via the keypad for all the reasons I stated in this thread. It takes just a few seconds to do this if you have a VFD on hand.

This is has been quite the experience I must say. You are in the same boat as me as someone trying properly understand the programming of these VFDs. But regarding Mac, I feel like I'm trying to explain that when driving a car with the gas pedal, it doesn't matter what the cruise control setting is if cruise control isn't being used and the cruise control setting won't save you if the car has a "power breakdown", to a mechanic that has "repaired hundreds of cars." Seeing as how he doesn't read any of this, it is useless. Explaining everything though, has been helpful for me and maybe someone else someday.

[handlewanker]

I can understand where you are going to......I just don't know anything, apart from what you posted, about the workings of your particular VFD.....mine does not have the manual with PD parameters just P00....P01 etc, probably the same, I don't know.....so there are some differences.

I got a load of VFD setting info from a UTUBE video posted by Clough42 who showed a lot of parameters that you can configure for whatever purpose you need to reset from factory defaults etc.

As Mac said, it (mine, the AT1 model) will work straight out of the box with factory default settings so I'm chuffed.

I see on mine, at parameter P01, there is a parameter setting range from 0 to 400 Hz and default to 50 Hz, so as my motor is 50 Hz I'll get from zero rpm up to a max of 3,000 rpm at top speed......also, there is one parameter at P25 for motor series selection...….0-2 poles.....1-quadpole.....2-sextpole...….I assume that a 2 pole motor is faster at 3,000 rpm so I'm OK there at default of 0.

I assume that as the VFD is adjusting the frequency to vary the rpm of the motor from 0 rpm to 3,000rpm, at P01 with a setting of "0" for 50 Hz I will get a frequency variation on the panel turn knob from 0 to 50 Hz...….what if I should set the P01 setting from the factory default of 50 Hz to a higher number like 100Hz.....will this then make the motor rev higher than it's rated 3,000 rpm, say 6,000?...…...I don't think the bearings or the balance are rated to go that high for any length of time......just thinking.

I would not like to "inherit" a second hand VFD with the P01 setting at the 400Hz mark and run my motor without checking that parameter first...…..4 times the default frequency at P01 with 400Hz would make the top speed of 3,000 rpm 24,000rpm...….gasp, stand by for take off.

The main thing is, if yours works without drama then all is well...…...If by some quirk of fate you do get a mishap, do post it here as we would like to know about it and any possible causes so we can avoid them......life wasn't meant to be easy etc.
Ian.

[justinwol]

Everything I've said is in reference to the HY02D223B only.

I found an XSY-AT1 manual, not sure if it is the same as yours, but the settings in the one I'm looking at are certainly in a different sequence and, though the same in function, some are named different. There isn't much to go on, there are only 4 pages and very little is explained.

But it looks like the main settings relevant to this conversation are likely P10 (Working frequency source) and P26 (Working frequency) which would be PD002 (Operating frequency source) and PD003 (Operating frequency) respectively.

If that is the case, then I wouldn't be surprised to see that if you changed the speed on your keypad (P10 = 0 Panel keyboard mode) that the value of P26 changes with it. However if your using the knob on the front (P10 = 1) than you likely won't see any changes to P26's value unless the knob is a digital encoder instead of an analog pot, then it might be adjusting P26's value.

I'm guessing P00 (Maximum voltage) and P01 (Reference Frequency) are the ratings of the motor, P02 to P04 along with P06 are the V/f curve parameters, and P06 and P07 are the upper and lower limits.

If P00 and P01 are the motors ratings which it definitely looks like, then it certainly would be bad if you received a VFD and didn't set these correctly for your motor.

If most of the defaults are correct, well then lucky you, life is a little easier in the event of a loss of settings.

But now I'm speculating and it does look about right, but... be careful.

Yeah, the VFD and spindle are purring along nicely and in the event of a power failure or settings reset, I know what could happen and what to do, because I've already tested that process out and understand the programming quite well now.

[handlewanker]

Hi, yes that is the model I have.....the other question.....on my VFD, what parameter setting would make the motor run faster or slower than the 3,000 rpm it was designed to run at apart from turning the knob on the front panel etc.

I see there is a parameter setting at P25 for 2, 4 or 6 pole motors...….does this determine the speed range for a particular motor....would a setting for a 2 pole motor have a detrimental effect if I were using a 4 pole motor?
Ian.