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

Gallery, Projects and General > How do I??

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Swarfing:
It will need to be wired delta

raynerd:
Thanks for all the advice and comments. I have had some success in that I`ve wired it all up and the motor does turn :ddb: BUT I`m getting quite a high pitch squeeling noise from the motor and it will go to a max of about 70-80 rpm and that seems to be top speed. That being said, I`ve only ran it a couple of times for fear of damaging the motor.

I clearly need to set some of the parameters but it feels like the manual and selection menu on the controller works in a different language!

I`ll figure out how to work the menu I`m sure, but if anyone has any advice on the actual parameters and settings I`ll need to actually select then please shout out. The nice thing about buying them off Gavin is that mine had been setup by him! If I can get it working then I`ll be pretty pleased with it. It is a nice little unit with a speed control pot on the unit itself. There is room for a control board but I wouldn`t have a clue how to connect one!!

Any more help on setting up the inverter would be welcome. The manual is linked to in my first post.
Chris

John Rudd:
Chris,

you need to access the menu to see what the settings are....If the motor is squeeling then potentially the frequency may be set too high....My vfd is set to a max of 75 hz....

Also if the vfd is naything like mine they are suited to dual voltage motors....i.e when the windings are connected in Delta the windings see 220v rather than the usual 415volts from a proper 3ph supply

raynerd:
Hi John

The first job tonight is to set the maximum frequency as I was told to do this by Swarfing last night but was struggling. I`ve been studying the manual today and so I`ll give that a go tonight.

The problem is...where do I get all the other data from?

I know in my menu I can set:

Maximum Frequency
P, I and D Gains
accel and d`accel ramps
Feedback destination

How do I know what I need to set these to?

Chris

David Jupp:
Leave the PID controller disabled - at least initially (can't imagine youy'll need that functionality). Then you can ignore P I & D.

Also you won't use the Feedback of not using PID - that's one less thing to worry about.

Ramp rates - probably not critcal on such a small motor, start off with something arbitrary. A slow ramp will give 'soft start' (can help limit mechanicl shock and start up surge on larger drives).

If just being used as a way to drive a 3 phase motor, and perhaps give som basic speed variation you don't really need the more exotic functions.

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