Mitsubishi Electric FR-A700 Technical Manual page 110

(3) Warning
common
Name
When the output current (output torque
during real sensorless vector control and
vector control) of the inverter exceeds the
stall prevention operation level ([Pr. 22 Stall
prevention operation level], etc.), this function
stops the increase in frequency until the
overload current decreases to prevent the
inverter from resulting in overcurrent trip.
When the overload current has reduced
below stall prevention operation level, this
function increases the frequency again.
When the output current (output torque
during real sensorless vector control and
vector control) of the inverter exceeds the
stall prevention operation level ([Pr. 22 Stall
prevention operation level], etc.), this function
reduces frequency until the overload current
decreases to prevent the inverter from
resulting in overcurrent trip. When the
overload current has reduced below stall
prevention operation level, this function
increases the frequency up to the set value.
Definition of constant speed is when the
output frequency is within
frequency.
When the output current (output torque
during real sensorless vector control and
vector control) of the inverter exceeds the
stall prevention operation level ([Pr. 22 Stall
prevention operation level], etc.), this function
stops the decrease in frequency until the
overload current decreases to prevent the
inverter from resulting in overcurrent trip.
When the overload current has decreased
below stall prevention operation level, this
function decreases the frequency again.
If the regenerative energy of the motor
becomes excessive and exceeds the
regenerative energy consumption capability,
this function stops the decrease in
frequency to prevent overvoltage trip. As
soon as the regenerative energy has
reduced, deceleration resumes.
Appears if the regenerative brake duty
reaches or exceeds 85% of the [Pr. 70
Special regenerative brake duty] value. If the
regenerative brake duty reaches 100%, a
Regenerative brake
regenerative overvoltage (E. OV1 to E.OV3)
prealarm
occurs.
For
F700
the 75K or more.
Description
2Hz of the set
, this warning appears only for
103
Indication
Operation Parameter unit
panel FR-PU04 FR-PU07
OL
(OL)
oL
(oL)
RB
(RB)
SPECIFICATIONS
Available Inverters
A700 F700 E700 D700
1