Using a Nowforever 2.2KW VFD to drive a 1.5KW spindle

[theRat]

Hi all,

I have a Chinese 6040 with a Nowforever 1.5KW VFD (model D100S1R5B) that let go of its magic smoke, with a 1.5KW spindle. I ordered an exact replacement, but have been delivered the 2.2KW VFD (model D100S2R2B). Is it possible through the programming of the VFD to derate it so that it can safely run a 1.5KW spindle? I would prefer not to have to go through the pain of returning it and getting the right one if at all possible (China post already lost the first one).

Cheers
Simon

Similar Threads:

• Nowforever VFD D100
• Need Help!- Not right speed with Nowforever vdf
• Need Help!- I.H. Belt drive conversion spindle drive sleeve gear
• Need Help!- Help Polarity Direction 6040z yoocnc-usb Nowforever E100 Spindle
• Need Help!- Nowforever settings

[ger21]

Yes, just set the current rating to match the spindle.

[mactec54]

Hi all,

I have a Chinese 6040 with a Nowforever 1.5KW VFD (model D100S1R5B) that let go of its magic smoke, with a 1.5KW spindle. I ordered an exact replacement, but have been delivered the 2.2KW VFD (model D100S2R2B). Is it possible through the programming of the VFD to derate it so that it can safely run a 1.5KW spindle? I would prefer not to have to go through the pain of returning it and getting the right one if at all possible (China post already lost the first one).

Cheers
Simon

They sent you a VFD with more capacity, which is better, you smoked the first one because either Parameters where not set correct or the wiring was not correct, these machines have a problem with there wiring which in your case needs to be corrected before you turn it on

Check that your Hot wire is connected to ( R ) Terminal and ( S ) to Neutral, Ground / Earth must also be connected, if you can't find a Ground / Earth Screw, then connect to the Heatsink of the VFD which if it has aluminum mounting feet, that would be the place to connect the Ground / Earth wire

Parameters post what you have set, I have a Parameter list for these VFD Drives

[skrubol]

How long did the first VFD last?

[theRat]

Hi,

Thanks for the replies.

@ger21, I don't know how to do that. That is what I was asking.

@mactec54, I am pretty sure everything was setup ok before. I suspect it may have ingested something (was machining aluminium at the time) that caused a short circuit. I don't have the settings from the original VFD, but they where left as the set from the CNC machine supplier, except for changing it to use AIN1 to control the speed. I think these are the ones I changed.

P0-001 0
P0-002 2
P0-007 400
P0-008 0
P0-016 1
P0-021 0
P0-022 0
P0-023 10
P0-024 400

I don't know what any of the other values where set to. The spindle is a watercooled 1.5KW 24000rpm 400Hz model if that helps with getting the correct settings.

Chers
Simon

[theRat]

They sent you a VFD with more capacity, which is better, you smoked the first one because either Parameters where not set correct or the wiring was not correct, these machines have a problem with there wiring which in your case needs to be corrected before you turn it on

Check that your Hot wire is connected to ( R ) Terminal and ( S ) to Neutral, Ground / Earth must also be connected, if you can't find a Ground / Earth Screw, then connect to the Heatsink of the VFD which if it has aluminum mounting feet, that would be the place to connect the Ground / Earth wire

Parameters post what you have set, I have a Parameter list for these VFD Drives

Mactec54,

Are you able to post the parameter list you have. I have been busy and away, but am going to be trying to get the VFD running this weekend.

Cheers
Simon

[mactec54]

Mactec54,

Are you able to post the parameter list you have. I have been busy and away, but am going to be trying to get the VFD running this weekend.

Cheers
Simon

There are not many to set in this VFD Drive, you have some of them in your list, some need changing as well, see if there are d1 parameters for your VFD also, as some of these may need setting to protect the smaller currant Spindle

P0-000=1 ( 1 For Terminal Control 0 For Key Board Control )

P0-001=0

P0-002=1

P0-04=400

P0-006=2

P0-007=400

P0-008=100

P0-009=10 (Adjustable )

P0-010=10 (adjustable )

P0=011=8

P0-012=1

P0-024=400

P0-030=1

P0-036=100%

P0-037=100%