"Nominal Current" question
My VFD has a parameter setting for "Motor Nominal Current - Allowed Range .2 to 2.0 * /2nA (must be equal to value on motor rating plate).
My motor plate has nothing labled about "Nominal Current".
Ser. F. 1.15
What should I enter for this parameter?
I would just put in 5.8
If it won't take that, than 1.0
Last edited by Bguns; 02-17-2010 at 08:24 PM.
Are you sure your VFD is sized for your motor? Nominal current should be the nameplate rate. If it is rated for 6 Amp-then enter the highest nominal value. If the VFD is not rated for 6 amps-then you will have a problem...
Nope, the VFD is rated at 16.8 Amps, 240 volt.
So I guess I should enter the Amp rating- 5.8?
Yes.. it's just the nameplate current. It's "nominal" because any motor can exceed this number... The VFD is smart enough to allow short term overloads based on this number.
Allowed Range .2 to 2.0 * /2nA (must be equal to value on motor rating plate).
Are you sure about the 0.2 to 2.0 value? The "must be equal to motor nameplate", is the right answer. Your values above are whats throwing a bit of caution into the mix. If the drive accepts your nameplate value 0f 5.8 Amps-then you're golden Nothing like commissioning to lose some hair over.
Yeah, the ".2-2.0" value is in the operator's handbook. The handbook is written for European settings, not U.S.A.
If the handbook were published in the U.S. it would be in 5 different languages, with 5 different conversion equivalents. Political Correctness.
Is there anywhere in the setup to enter 'motor full load' current? If there is then the above mentioned setting MIGHT be for the service factor (SF) on your nameplate. This is just a maybe... I really have no idea from your description. I would call ABB's support line, the number should be in the book or on-line if the book only lists European numbers, and ask them what it means. I have seldom had to call ABB but when I have they were very helpful and knowledgeable.
Edit: I found the link to the manual in your other post and the answer is...... I have no idea what they want . I would call ABB in the morning and have them explain what they want. If you do call and get the answer PLEASE let us know what they said. I would really like the answer explained to me.
Last edited by rdfeil; 02-17-2010 at 10:06 PM.
Looking at the ACS320 manual, page 129, code 9906 motor nominal current
the setting of 0.2 to 2.0 is with reference to the drive current.
So you should be able to put in the motor current as per the nameplate. the drive will either accept it or not, depending on what the rating is. If the drive is suitable for your motor, as it seems it should be, it will take it.