Modification in DC Drive

Why not ask the mfr of the DC drive? We have no way of knowing if that drive allows you to adjust the Field voltage down to less that 25% of rated output.

we already asked the mfr and we get nothing in return. Mfr told that we have designed the drive according to your requirements. If you are using this drive with other motor then you need to order a new drive for that. But for us, motor and drive both are in spare so we want to use both for other work. Thats why we need to do some modification for that. Hope u get it..

I get it. You didn't get the answer you wanted from the people who should know, so you are fishing for a different answer, or some free engineering. Good luck with that.

Short answer: No. The armature supply will work (440VAC input will provide the necessary 500VDC output, and the 150kW rating of the armature supply is adequate to feed the 110kW rating of the motor armature, but the field supply on the drive is not compatible with the field rating on the motor without modification. You say that the drive is equipped with field weakening, but you don't say what the field supply is rated at. Can it give you 30A? If not, you need a separate field supply. If it can, can you turn down the field supply to 50V? Again, if not, you need a separate field supply. Judging from the fact that the CT ratio for it is 25:1, I'd say it isn't big enough to feed your motor.