pDrive CX Single - will this inverter run my 3 phase motor?

Gallery, Projects and General > How do I??

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buffalow bill:
Chris,
The problem may not be the inverter, but could be the motor. May be worth checking.

With the motor running slow one of the winding may be the wrong way round. If incorrect two winding are giving a CW rotation and one will be giving an ACW rotation.
Motor windings ends are usually indicated (ie A & B) what ever the indication are then the A’s all connect to B’s. The order that they connect in does not matter that will only alter the rotation.

L1 L2 L3
A1 to B3 A2 to B1 A3 to B 2

L is line conductor = supply from inverter
A & B winding ends

Hope I am not confusing you.
Bill

raynerd:
Grrr.... thanks for more of the messages and suggestions!

I pulled the Jaguar Inverter off my Boxford Lathe and hooked that up to the motor and it runs fine so I rule the motor out as the issue. Likewise I have reverted back to the new pDrive inverter and changed the connections around going into the inverter. The motor as expected goes in the other direction but I still get the slow speed and high pitch squeel from the motor.

I have set the base to 50hz and max freq to 75hz as instructed by Swarfing.

There is a jog mode but the manual (which seems to presume the user is an expert!) tells me that it has to be in "off" mode. I`m clearly in run mode and so I`m convinced the issue isn`t to do with jogging.

There is a clear issue here with the frequency. Despite setting the frequency basic settings as stated, when I run the motor and set the display to show me the frequency, I`m only running at 16Hz and although I have the front panels controls selected as my input, the pot is doing near to nothing to the speed. It will slow it down!!! (it is going slow enough!!) but it won`t speed it up above 16-17Hz. The max is 100% set to 75Hz.

My next step is to hook the Boxford motor up to the new inverter but if anyone has any more suggestions...the more the better as I`m slowly loosing faith that this is going to work!

Chris

Swarfing:
Chris is anything set for F02 and F03?

raynerd:
"10" for both ???

Chris

EDIT: just looked it up, ramp values and 10s is default.

Swarfing:
ok maybe a thought now? are we sure it a three phase motor and not a 2 pole with cap start = 6 wires?

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