1.1 Outline and Functions
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Current input within a range from 4 to 20 mA
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Input from Option Card
Any of the above frequency references can be used by setting a constant.
A maximum of nine frequency references can be registered with the Inverter. With remote multi-step speed
reference inputs, the Inverter can operate in multi-step speed operation with a maximum of nine speed
steps.
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PID Control
The Inverter has a PID control function for easy follow-up control. Follow-up control is a control method
in which the Inverter varies the output frequency to match the feedback value from the sensor for a set
target value.
Follow-up control can be applied to a variety of control operations, such as those listed below, depending
on the contents detected by the sensor.
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Speed Control: With a speed sensor, such as a tacho-generator, the Inverter regulates the rotat-
ing speed of the motor regardless of the load of the motor or synchronizes the
rotating speed of the motor with that of another motor.
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Pressure Control: With a pressure sensor, the Inverter performs constant pressure control.
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Flow-rate Control: By sensing the flow rate of a fluid, the Inverter performs precise flow-rate
control.
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Temperature Control: With a temperature sensor, the Inverter performs temperature control by fan
speed.
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Zero-servo Control
Zero-servo control is effective with flux vector control. Even at a motor speed of zero (r/min), a torque
of 150% of the motor’s rated torque can be generated and the average servomotor holding power (stopping
power) can be obtained.
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Speed Control By Feedback
Speed control using feedback is effective with a PG. An optional PG Speed Control Card be used to enable
feedback control for speeds, thereby improving speed control accuracy.
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Dwell Function
By holding the output frequency for a constant time during acceleration and deceleration, acceleration and
deceleration can be performed without stepping out even when driving a motor with a large startup load.
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Low Noise
The output transistor of the Inverter is an IGBT (insulated gate bipolar transistor). Using sine-wave PWM
with a high-frequency carrier, the motor does not generate metallic noise.
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Monitor Function
The following items can be monitored with the Digital Operator: Frequency reference, output frequency,
output current, motor speed, output voltage reference, main-circuit DC voltage, output power, torque ref-
erence, status of input terminals, status of output terminals, operating status, total operating time, software
number, speed deviation value, PID feedback value, fault status, fault history, etc.
All types of data can be monitored even with multi-function analog output.
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Multilingual Digital Operator (SPEC:F)
The Digital Operator can display in seven languages (Japanese, English, German, French, Italian, Spanish,
and Portuguese). The Digital Operator’s liquid crystal display provides a 16-character x 2-line display
area.
Easy-to-read displays in each language allow the advanced functions of the Inverter to be set in interactive
operations to input constants, monitoring items, etc. Change the constant setting to select the display lan-
guage.
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Harmonic Countermeasures (0.4 to 160 kW Models)
The VS-616G5 Inverters up to 160 kW support DC reactors to easily handle high-frequency control guide-
lines.
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DC reactors (optional) can be connected to 0.4 to 15 kW models.
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Models from 18.5 to 160 kW have a built-in DC reactor.
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An optional AC reactor can be connected to Inverters from 185 to 300 kW.
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