Mitsubishi Electric 800 Series Instruction Manual (Function page 297

 Setting of stall prevention operation level (Pr.22)
Pr.22
OL
Stall prevention operation example
NOTE
• A continuous overloaded condition may activate a protective function such as motor overload trip (electronic thermal O/L relay
function) (E.THM).
• When Pr.156 has been set to activate the fast response current limit (initial value), the Pr.22 setting should not be higher than
170%. Such setting prevents torque generation.
• When Real sensorless vector control or Vector control is selected using Pr.800 Control method selection, Pr.22 serves as
the torque limit level.
296
12. (H) Protective Function Parameters
12.10 Stall prevention operation
Output current
Output frequency
Constant
speed
Time
• For Pr.22 Stall prevention operation level, set the ratio
of the output current to the inverter's rated current at which
the stall prevention operation is activated. Normally, use
this parameter in the initial setting.
• Stall prevention operation stops acceleration (makes
deceleration) during acceleration, makes deceleration
during constant speed, and stops deceleration during
deceleration.
• When the stall prevention operation is performed, the
Overload warning (OL) signal is output.