Delta VFD300C43S-HS User Manual page 478

Chapter 12 Description of Parameter SettingsC2000-HS
 bit1=0: no function.
bit1=1: Inertia estimation function is enabled. bit1 setting would not activate the estimation
process, set Pr.05-00 = 12 to begin FOC / TQC Sensorless inertia estimating.
Per Unit of System Inertia
Settings
 To get the system inertia from Pr.11-01, user needs to set Pr.11-00 to bit1=1 and execute
continuous forward / reverse running.
1–65535 (256=1PU)
12.2-00-8
Default: 256