Mitsubishi Electric FR-E500 Instruction Manual page 100

<Setting>
y In Pr. 22, set the stall prevention operation level. Normally set it to 150% (factory
setting). Set "0" in Pr. 22 to disable the stall prevention operation.
y To reduce the stall prevention operation level in the high-frequency range, set the
reduction starting frequency in Pr. 66 and the reduction ratio compensation factor in
Pr. 23.
Calculation expression for stall prevention operation level
Stall prevention operation level (%) = A + B × [
Pr.
where, A =
output
y By setting "9999" (factory setting) in Pr. 23, the stall prevention operation level is
constant at the Pr. 22 setting up to 400Hz.
Do not set a small value as the stall prevention operation current.
Otherwise, torque generated will reduce.
Test operation must be performed.
Stall prevention operation during acceleration may increase the
acceleration time.
Stall prevention operation during constant speed may change the speed
suddenly.
Stall prevention operation during deceleration may increase the
deceleration time, increasing the deceleration distance.
Pr. 24 to Pr. 27 Î Refer to Pr. 4 to Pr. 6.
×
66 (Hz) Pr. 22 (%)
, B =
frequency (Hz)
CAUTION
−
Pr. 22 A
−
Pr. 22 B
×
Pr. 66 (Hz) Pr. 22
400Hz
85
PARAMETERS
−
Pr. 23 100
] × [
]
100
(%)
4