4-50
4-2 Function Mode
4
Functions
• If "sensorless vector control", "0-Hz sensorless vector control", or "sensor vector control" is selected
as the control method (V/f characteristics) (refer to "Control Method (V/f Characteristics)" (page 4-
21)), and "03" is selected for b021/b024, the frequency increases when a current exceeding the
overload limit level flows during regenerative operation.
• If overload limit parameter b023/b026 is set too short, an overvoltage trip may occur because of
regenerative energy from the motor caused by automatic deceleration of this function even during
acceleration.
• Make the following adjustments if this function operates before the frequency reaches the target
value during acceleration.
Increase the acceleration time. (Refer to "Acceleration/Deceleration Time" (page 4-8).)
Increase the torque boost. (Refer to "Torque Boost" (page 4-19).)
Increase the overload limit level (b022/b025).
Overload Warning
• If the applied load is large, the Inverter can output an overload warning signal before an overload
trip occurs.
This helps prevent mechanical damage due to an overload in the carrier machine, or an operation
line stop due to overload protection of the Inverter.
• Allocate "03" (OL) or "26" (OL2) to any of multi-function output terminals P1 to P5 (C021 to C025)
or the relay output terminal (C026). (Two types of overload warning signals are available for
output.)
Overload limit level
b022/b025
Output current
Max. frequency
A004/A204/A304
Inverter output
frequency
b023/b026
Decelerates according to the set
overload limit parameter.
Target frequency
F001
Overload limit level
b022/b025
Overload warning level
C041/C111
Output current
OL/OL2 output
Summary of Contents for 3G3RX Series
Page 1: ...Cat No I560 E1 03 USER S MANUAL SYSDRIVE RXSERIES High function General purpose Inverter ...
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Page 17: ...Chapter 1 Overview 1 1 Functions 1 1 1 2 Appearance and Names of Parts 1 4 ...
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Page 23: ...Chapter 2 Design 2 1 Installation 2 1 2 2 Wiring 2 6 ...
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Page 337: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 1 ...
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Page 437: ...Index ...
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