Not right speed with Nowforever vdf

[CarecaIII]

Hi. I have a CNC 6040z from Chinacnczone Store. It has a nowforefer vfd D100S2R2B.

I have a trouble. When I set M3 S20000, the spindle starts to 400Hz and 24000rpm the same thing if I set M3 S24000, that is, the maximum rotation speed is reached already with s20000 and not with s24000 as it should be.

Can you help me?

Thanks.

My pids are:
P0-000 1
P0-001 0
P0-002 2
P0-003 0
P0-004 50.00
P0-005 5.00
P0-006 0
P0-007 400.00
P0-008 0
P0-009 8.0
P0-010 8.0
P0-011 6.0
P0-012 400.00
P0-013 1.0
P0-014 0.0
P0-015 0.0
P0-016 1
P0-017 24
P0-018 25
P0-019 26
P0-020 0
P0-021 0.00
P0-022 0.00
P0-023 10.00
P0-024 400.00
P0-025 1
P0-026 3
P0-027 0
P0-028 1.00
P0-029 0
P0-031 0
P0-032 0.00
P0-033 0.0
P0-034 0.00
P0-035 100.0
P0-036 150.0
P0-037 130.0
P0-038 125.0
P0-039 0
P0-040 0
P0-041 0
P0-042 0
P0-043 0
P0-044 0
P0-045 0
P0-046 3.00
P0-047 0
P0-048 1.00
P0-049 2.00
P0-050 0.00
P0-051 0.0
P0-052 0.0
P0-053 15.0
P0-054 15.0
P0-055 1
P0-056 2
P0-057 0
P0-058 0
P0-059 0.00
P0-060 250.00
P0-061 150.00
P0-062 350.00
P0-063 100.00
P0-064 300.00
P0-065 200.00
P0-066 400.00
P0-067 8.00
P0-068 9.00
P0-069 10.00
P0-070 11.00
P0-071 12.00
P0-072 13.00
P0-073 14.00
P0-074 15.00
P0-075 0
P0-076 0.0
P0-077 0.0
P0-078 0.0
P0-079 0.0
P0-080 0.0
P0-081 0.0
P0-082 0.0
P0-083 0.0
P0-084 0.0
P0-085 0.0
P0-086 0.0
P0-087 0.0
P0-088 0.0
P0-089 0.0
P0-090 0.0
P0-091 0.0
P0-092 0
P0-093 0
P0-094 15.0
P0-095 15.0
P0-096 15.0
P0-097 15.0
P0-098 15.0
P0-099 15.0
P0-100 15.0
P0-101 15.0
P0-102 0
P0-103 15.0
P0-104 15.0
P0-105 220.0
P0-106 0.00
P0-107 30.0
P0-108 7
P0-109 8
P0-110 1


P1-000 0
P1-001 0


P2-000 0


d0-000 4
d0-001 4
d0-002 4


d1-000 1500
d1-001 41182
d1-002 4
d1-003 2.2
d1-004 220.0
d1-005 10.0


d2-000 0
d2-001 0.00
d2-002 0.00
d2-003 0.0
d2-004 0.0
d2-005 327
d2-006 0.0
d2-007 10
d2-008 3.00
d2-009 0.00
d2-010 0.00
d2-011 0.00
d2-012 0
d2-013 0
d2-014 0
d2-015 0


d3-000 0
d3-001 0
d3-002 0.00
d3-003 0.00
d3-004 0.00
d3-005 509
d3-006 510

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[Sterob]

What sort of Interfacing Card do you have? I have x61500GT and my Card will be different.
Look at the manual for that. I suspect the problem is the way they send the speed signal to the VFD. They may be using a PWM signal and a pull up resister to get a 'fairly close' representation of the correct Spindle Speed, as was in my case.
the Nowforever VFD expects a 0 - 10 VDC or 0 - 20 mA signal for speed control, depending on a jumper on the drive.
I downloaded the manual but could not see a wiring diagram to see how they have done it.

I had to buy and fit a signal converter to mine to improve the spindle speed accuracy. It converts a 5V p/p 0 - 100% PWM signal to a 0 - 10 V DC signal.

Measure the input to the VFD with a multimeter , when its running and you may see what I am talking about.
Or you could use an adjustable power supply to produce the 0 - 10v signal to the VFD.Your VFD may be doing exactly what the input suggests.

Steve

[CarecaIII]

Hi. My card is MKS4-V
I do not think it's a card problem because I noticed that even when I set the vdf on manual operation, the maximum speed is reached when the potentiometer is not at maximum.
This is the reason I think the problem is in setting the vdf.

Do you want to take a look at my pid?

Thank you.

[Sterob]

Sorry ...too many Parameters too look through them ALL. Went through the first section.
Speed commands coming from Mach 3 or the Front Potentiometer? You can't use both at same time.
Your USB Card outputs 0 -10V so that what you should be measuring at AIN1 on the VFD.
0V= 0 rpm, 10v = 24000 rpm.

P0-003 is set to 0 (Potentimeter ) I think it should be set to 2 ( AIN 1 )

Sorry, this is very difficult to diagnose like this......

Need more info...need test results with multimeter.

[CarecaIII]

Hi. Thanks for your reply. Speed commands coming from Mach3 or front potentiometer, it depends how I set P0-000: 0 for keyboard control or 1 for analog terminal control

I can set P0-003 to 0 or to 2 is same thing because I set P0-001 to 0 i.e. I set select main frequency source x and I don't set select assistant frequency source Y.

Do you have E100 or D100 manual? Because I don't know how P0-012, P0-013, P0-014, P0-015 work.

Do you know it?

[Sterob]

Hi. Thanks for your reply. Speed commands coming from Mach3 or front potentiometer, it depends how I set P0-000: 0 for keyboard control or 1 for analog terminal control

I can set P0-003 to 0 or to 2 is same thing because I set P0-001 to 0 i.e. I set select main frequency source x and I don't set select assistant frequency source Y.

Do you have E100 or D100 manual? Because I don't know how P0-012, P0-013, P0-014, P0-015 work.

Do you know it?

Hi Careca,

I have a D100 but can only find a manual for the E100. I imagine the parameters would be very close, if not identical.As far as I know......

PO-012 would not be that important for you application. Its just the 'starting mode' for the motor. Start with 4, I would think. You don't need anything special there.

PO-013 Torque Boost: same...leave at default.

PO-014 Auto Torque Compensation....Same...leave default.

PO-015 Auto Slip Compensation ...leave at default. This adjusts for how much 'slip' your motor has.

All Asynchronous motors have some slip....not important for you.

Stick with ONE method of speed control and fix that. Then try the other, if you want. You might be confusing things buy changing between 'MACH 3 control' and local 'potentiometer control'.

Regarding problem: Make sure input speed control to your VFD is 0v = 0 RPM and 10v = 24000 RPM.

Enter command ' M3 S12000 ' in MACH 3 and measure output voltage of your card. Should be 5 V.
That will should tell us where the problem is.

I will look through my parameters and compare yours and mine.

Steve

[CarecaIII]

I also have the manual of the E100, but those parameters (P0-012, P-013, etc.) are different from the D100.
For example P0-012 my vdf is set to 400, while on the E100 you can set max 7.


So those parameters that I asked you have another function.


Then the E100 reaches up to P0-102, while the D100 up to P0-105.


As soon as you send me your parameters I compare them so I hope to understand something.


Also your VDF when turned on writes D1500? Thank you.

[Kev Brook]

Hi there, have a look at this clip from my blog https://the-cnc.blogspot.co.uk/p/control-box.html

[CarecaIII]

Hi there, have a look at this clip from my blog https://the-cnc.blogspot.co.uk/p/control-box.html

Congratulations for the site. Unfortunately you have another vdf, the pid are different.

Anyway thanks the same.

[Karlosak]

Hello there,
sorry to revive this old thread, but I have the exact same problem as originally reported CarecaIII with my new X6-2200LT machine from OmioCNC, the speed of the spindle reaches 400Hz at 20000RPM in Mach3 and stays the same up till 24000RPM. Did you find a fix for your problem in the end?

My VFD settings are:
P0-000 1
P0-001 0
P0-002 2
P0-003 2
P0-004 400.00
P0-005 5.00
P0-006 0
P0-007 400.00
P0-008 0
P0-009 8.0
P0-010 8.0
P0-011 6.0
P0-012 400.00
P0-013 1.0
P0-014 0.0
P0-015 0.0
P0-016 1
P0-017 24
P0-018 25
P0-019 26
P0-020 0
P0-021 0.00
P0-022 0.00
P0-023 10.00
P0-024 400.00
P0-025 1
P0-026 3
P0-027 0
P0-028 1.00
P0-029 0

P0-300 0
P0-031 0
P0-032 0.00
P0-033 0.0
P0-034 0.00
P0-035 100.0
P0-036 150.0
P0-037 130.0
P0-038 125.0
P0-039 0
P0-040 0
P0-041 0
P0-042 0
P0-043 0
P0-044 0
P0-045 0
P0-046 3.00
P0-047 0
P0-048 1.00
P0-049 2.00
P0-050 0.00
P0-051 0.0
P0-052 0.0
P0-053 15.0
P0-054 15.0
P0-055 1
P0-056 2
P0-057 0
P0-058 0
P0-059 0.00
P0-060 250.00
P0-061 150.00
P0-062 350.00
P0-063 100.00
P0-064 300.00
P0-065 200.00
P0-066 400.00
P0-067 8.00
P0-068 9.00
P0-069 10.00
P0-070 11.00
P0-071 12.00
P0-072 13.00
P0-073 14.00
P0-074 15.00
P0-075 0
P0-076 0.0
P0-077 0.0
P0-078 0.0
P0-079 0.0
P0-080 0.0
P0-081 0.0
P0-082 0.0
P0-083 0.0
P0-084 0.0
P0-085 0.0
P0-086 0.0
P0-087 0.0
P0-088 0.0
P0-089 0.0
P0-090 0.0
P0-091 0.0
P0-092 0
P0-093 0
P0-094 15.0
P0-095 15.0
P0-096 15.0
P0-097 15.0
P0-098 15.0
P0-099 15.0
P0-100 15.0
P0-101 15.0
P0-102 0
P0-103 15.0
P0-104 15.0
P0-105 220.0
P0-106 0.00
P0-107 30.0
P0-108 7
P0-109 8
P0-110 1



P1-000 0
P1-001 0

P2-000 0

d0-000 0
d0-001 0
d0-002 0

d1-000 1500
d1-001 41182
d1-002 3
d1-003 1.5
d1-004 220.0
d1-005 8.0

d2-000 0
d2-001 0.00
d2-002 0.00
d2-003 0.0
d2-004 0.0
d2-005 327
d2-006 0.0
d2-007 10
d2-008 3.00
d2-009 0.00
d2-010 0.00
d2-011 0.00
d2-012 0
d2-013 0
d2-014 0
d2-015 0

d3-000 0
d3-001 0
d3-002 0.00
d3-003 0.00
d3-004 0.00
d3-005 510
d3-006 510

Thanks for your reply!