Confused on parameter 82 and actual motor speed on PowerFlex 70 ?

[wendaiyu 0]

Hi, guys, I am confused on parameter 82, PowerFlex 70. 082 Maximum Speed: default: 50 or 60 HZ, min/max: 5.0/500.0 HZ. Now, we have a motor (60HZ, 1725rpm), If there is 30 HZ displayed on the drive, what’s the actual motor speed difference 082=60 HZ and 082=300 HZ ? And we checked the PLC program, there is a function: actual motor speed (rpm) = XXX (type: int.) / 252.2 * 28 could someone tell us where XXX and 252.2 come from and what their meaning are? (we know Z = 1725 (rpm) * Y / 60 (HZ) = 28.75 Y.) Thanks a lot.

[slcman 9]

maximum speed is the max speed the drive can run the motor. As example, if you are using a 0-10Vdc to control drive speed, drive will run at speed set in "max speed" while speed ref voltage is 10Vdc.