i have two examples:

example 1:

if possible to use a same driver in this option of power and not at the same time:

motor#1 - 3 kW.

motor#2 -  14 kW.

motor#3 - 37 kW.

example 2:

It depends on application. If any one motor is required to run at a time, you can have single drive & by configuring different DDS you can select the motor you want to run. 
Please visit below FAQ & download the application for detailed information. It is applicable to G120.

MICROMASTER: Working with different drive data sets DDS / command data sets CDS

If your application demands more than 1 motor to be run simultaneously, you need to select appropriate drive.

HTH

PISCEAN 2010

It depends on application. If any one motor is required to run at a time, you can have single drive & by configuring different DDS you can select the motor you want to run. 
Please visit below FAQ & download the application for detailed information. It is applicable to G120.

MICROMASTER: Working with different drive data sets DDS / command data sets CDS

If your application demands more than 1 motor to be run simultaneously, you need to select appropriate drive.

HTH

ok, in one of this page speak about the posibility to change de motors parameters, this include the diferent powers? whitch is the range for the same vdf to drive a diferent powers? siemens have a software or a paper to see this?

User need to select VFD of higher power rating of the motors to be run, e.g. in your case you have motor of 3 Kw, 14 Kw, 37 Kw. VFD should be of power rating 37 Kw. You need to set DDS according to motor i.e. DDS1 for 3 Kw i.e. voltage, current, speed etc., DDS2 for 14 Kw, DDS3 for 37 Kw etc. etc.

Please read the FAQ link provided in my earlier reply.

HTH.

PISCEAN 2010

User need to select VFD of higher power rating of the motors to be run, e.g. in your case you have motor of 3 Kw, 14 Kw, 37 Kw. VFD should be of power rating 37 Kw. You need to set DDS according to motor i.e. DDS1 for 3 Kw i.e. voltage, current, speed etc., DDS2 for 14 Kw, DDS3 for 37 Kw etc. etc.

Please read the FAQ link provided in my earlier reply.

HTH.

thanks for the response PISCEAN. but its not clearly for my, i want only one CPU unit and only one power unit this is possibly? or maybe need other power units? i want this diferrent parameters in the same block (cpu unit + the power unit).

One caution.....

If you are running vector or sensorless vector control, you don't want to have a power unit larger than about 3 times your smallest motor (Siemens recommends 4 as a limit, but I think that is too much).  This leads to loss of resolution of current in the control loops.

Your 37 KW power module would be far too big for your 3 KW motor.  I would suggest you have a separate drive for that one.