1-4
H Acceleration/Deceleration Time Settings
• The
acceleration time and deceleration time of the Inverter can be set independently within a range of
0.0 to 3,600 s.
• Two
acceleration times and two deceleration times can be
set with the Inverter
, any of which can be
selected with remote output.
H V/f Settings
• Select a V/f pattern out of the 15 V/f patterns preset with the Inverter according to the application.
• An optional V/f pattern can be set with the Inverter.
H Monitor Function
• The following items can be monitored with the Digital Operator.
Frequency
reference, output frequency
, output current, output voltage, DC voltage, output power
,
status of input terminals, inverter status, power interruption error, PROM number, total operating
time, and PID feedback value
H Low Noise (3.7- to 160-kW Models)
• The
output transistor of the Inverter is an IGBT (insulated gate bipolar transistor). Using a sine-wave
PWM method with a high-frequency carrier, the motor does not generate metallic noise.
H High Torque at Low Output Frequency Range
• A
torque rate of 150% can be achieved even in a low
speed range where output frequency is only 3 Hz.
H Automatic Torque Boost
• The
Inverter automatically adjusts the output according to the required torque of the motor that is
rotat
-
ing at constant or accelerative speed, thus ensuring the powerful rotation of the motor.
H Harmonic Countermeasures (3.7- to 160-kW Models)
• DC reactors (optional) can be connected to 3.7- to 15-kW models.
• Models of 18.5- to 160-kW have a built-in DC reactor and also employ 12-pulse rectification, which
suppresses harmonics better than a reactor.
Introduction Chapter 1
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