APC FM35M Computer room unit

[jonesg088]

I have a APC (liebert type a/c),has 2 seperate direct drive / frequecy drive motors. One of the 2 drives is shot (GE Fuji drive).It has no local display on it and the main microprocessor has some access to its running parameters,my question is the drive controlled directly by the microprocessor via modbus or something proprietary.i'm trying to figure how the drive knows what parameters it needs to run at,perhaps its preconfigured from apc and has to be purchased thru apc in order for it to operate.Any help appreciated the books i read had limited info.
Thanks

[ascj]

All I know is...yes it communicates via modbus to main controller. I have only replaced one and I got it from our APC rep. I was told it wasn't programmed by APC, but it was programmed for APC.

[jonesg088]

Thanks for that info

[atmosphere]

No Display = RS485 port on the drive. Windows 95 and later.