Setting The Stall Prevention Operation Level (Pr.22) - Mitsubishi Electric FR-F800 Instruction Manual

Setting the stall prevention operation level (Pr.22)
Pr.22
Constant
speed
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
140%. Such setting will prevent torque generation
• Under PM motor control, the stall prevention operation level is reduced inversely proportional to the output frequency in the
constant output range of the rated motor frequency or higher.
• For Pr.22 Stall prevention operation level, set the ratio of the output
Output current
current to the inverter's rated current at which the stall prevention operation
will be activated. Normally, use this parameter in the initial setting.
Output frequency
• Stall prevention operation stops acceleration (makes deceleration) during
acceleration, makes deceleration during constant speed, and stops
deceleration during deceleration.
Time
• When the stall prevention operation is performed, the Overload warning
(OL) signal is output.
(H) Protective function parameter
PARAMETERS
5
GROUP
H
249