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Mitsubishi Electric FR-CS84-012 Instruction Manual Page 121

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 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 is set to activate the fast-response current limit (initial value), the Pr.22 setting should not exceed 170%.
Otherwise, the torque may be insufficient.
120
5. PARAMETERS
5.6 (H) Protective function parameter
Output current
Output frequency
Constant
speed
Time
• For
Pr.22 Stall prevention operation level
output current to the inverter rated current at which the stall
prevention operation is activated. Normally, this should be
set at 150% (initial value).
• 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.
, set the ratio of the

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