8 - 47
8 Applied Settings
High-function General-purpose Inverter RX2 Series User’s Manual
8-
2 T
riple
ss Fu
nct
ions
8
8-2
-4 Ove
rexcitation Function
[bA146] overexcitation function selection allows you to enable the overexcitation function.
The overexcitation function increases the motor loss and reduces energy to be regenerated in order to
suppress the overvoltage and prevent tripping.
Precautions for Correct Use
• When this function is enabled, the current may increase as the output voltage increases.
• When using this function, the motor will be overexcited and the heat generated by the motor
may increase.
• Depending on the deceleration rate or load status, the overvoltage tripping may be triggered
even if this function is enabled.
• The overexcitation function is activated when controlling VC characteristics of V/f control, VP
characteristics, and free V/f control.
Parameter
8-2-4
Overexcitation Function
Item
Parameter
Data
Description
Default
data
Over magnetization
deceleration function
selection, 1st_motor
[bA146]
00
Disabled
02
01
Always active
02
Active only during deceleration
03
Level operation
04
Level operation during deceleration
Over magnetization
output filter time
constant, 1st_motor
[bA147]
0.00 to 1.00(s)
Filter time constant applied to the overexci-
tation output.
0.30
Over magnetization
voltage gain,
1st_motor
[bA148]
50 to 400(%)
Gain for the overexcitation output voltage.
100
Over magnetization
level setting,
1st_motor
[bA149]
200 V class:
330.0 to 400.0 (V)
400 V class:
660.0 to 800.0 (V)
The level at which the overexcitation func-
tion starts its operation.
(200V
class)
360.0
(400V
class)
720.0
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
