12-13-4
Chapter 12
Inverter Function
12.13.3
Controlling frequency to avoid
overvoltage
• Overvoltage error is generated when the motor is
decelerated.
• I want to decelerate the motor by automatically
extending the deceleration time.
• I want to prevent overvoltage error by increasing
the frequency when
regenerative load is applied.
• [bA140] overvoltage suppression function selection
allows you to enable the overvoltage suppression
function.
• The overvoltage suppression function will be
activated when the internal DC voltage of the
inverter main circuit capacitor exceeds the value
set by [bA141] overvoltage suppression level.
Parameters
• When this function is enabled, the actual
deceleration time may get longer than the set
value.
• When using this function, it may take long time
before the motor stops depending on the motor
load moment of inertia.
• Depending on the deceleration rate or load status,
the overvoltage tripping may be triggered even if
this function is enabled.
• Set [bA141] to be receiving voltage x
√
2 × 1.1 or
higher. Setting a value lower than the P-N voltage
in operation may prevent the motor from stopping.
Item
Parameter
Data
Description
Overvoltage
suppression function
[bA140]
00
Disabled
01
Constant DC voltage-controlled deceleration
02
Function to avoid overvoltage acceleration (only
in deceleration)
03
Function to avoid overvoltage acceleration
Overvoltage
suppression level
setting
[bA141]
200 V class: 330.0 - 400.0
(V)
400 V class: 660.0 - 800.0
(V)
Sets the level at which the overvoltage
suppression function starts.
Overvoltage
suppression operating
time
[bA142]
0.00~3600.00(s)
Acceleration time when the overvoltage
suppression function is activated.
Constant DC voltage
control Proportional (P)
gain
[bA144]
0.00~5.00
Proportional gain for PI control in constant DC
voltage control.
Constant DC voltage
control Integral (I) gain
[bA145]
0.00~150.00
Integral gain for PI control in constant DC
voltage control.
Q
A
!
Содержание SJ Series
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Страница 55: ...6 16 Chapter 6 Installation Memo ...
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Страница 135: ...9 40 Chapter 9 Operating Instructions Memo ...
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Страница 581: ...15 10 Chapter 15 Optional Cassettes Memo ...
Страница 591: ...16 10 Chapter 16 ProDriveNext EzSQ Memo ...
Страница 642: ...18 49 Chapter 18 Tips FAQ Troubleshooting Memo ...
Страница 650: ...19 8 Chapter 19 Maintenance and Inspection Memo ...
Страница 661: ...20 11 Chapter 20 Specifications Model P1 P1 200V class 02950 L 550L Dimension W mm H mm D mm 700 480 250 ...
Страница 662: ...20 12 Chapter 20 Specifications Model P1 P1 400V class 01760 H 750H 02130 H 900H Dimension W mm H mm D mm 390 700 270 ...
Страница 663: ...20 13 Chapter 20 Specifications Model P1 P1 400V class 02520 H 1100H 03160 H 1320H Dimension W mm H mm D mm 480 740 270 ...
Страница 678: ...21 7 Chapter 21 Technical Notes SJ700D SJ P1 ND normal duty SJ700D 550LFF3 P1 02950 LFEF P1 550LFF ...
Страница 686: ...21 15 Chapter 21 Technical Notes SJ700B SJ P1 LD low duty VLD very low duty SJ700B 750LFF P1 02950 LFEF P1 550LFF ...
Страница 781: ...Appendix 1 70 Appendix 1 List of Parameters Memo ...