(C) Motor constant parameters
When the Pr. 0 and Pr. 12 settings are changed from their initial values, automatic change is not
When the SF-PR motor is selected (Pr. 71="70, 73, or 74"), the output current may become large
due to a small load by setting Pr. 81 "Number of motor poles" according to the number of the
SF-PR motor poles.
When the SF-PR motor is used, the output current tends to increase compared with the case
where the SF-JR or SF-HR motor is used. With its torque boost value automatically changed, the
output current could increase depending on the load conditions.
When the protective function, such as the electronic thermal O/L relay (E.THT, E.THM) or the stall
prevention (OL, E.OLT), etc. is activated, adjust the Pr. 0 "Torque boost setting" according to the
Make sure to set this parameter correctly according to the motor used. Incorrect setting may
cause the motor and inverter to overheat and burn.
Parameters referred to
Pr. 100 to Pr. 109
Pr. 178 to Pr. 189
5 - 302
DC injection brake operation voltage
Load pattern selection
Auto tuning setting/status
(Adjustable 5 points V/F)
(input terminal function selection)
Tuning data unit switchover