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131
Motor brake and stop operation
4.10.3 Selection of a regenerative brake (Pr. 30, Pr. 70)
The above parameters can be set when
Pr. 160 Extended function display selection
= "0".
(1) When using the brake resistor (MRS type, MYS type), brake unit (FR-BU2), power regeneration
common converter (FR-CV), and high power factor converter (FR-HC2)
Set
Pr. 30
to "0" (initial value).
The
Pr. 70
setting is invalid.
At this time, the regenerative brake duty is as follows.
Assign the inverter operation enable signal (X10) to the contact input terminal. To make protective coordination with the
FR-HC2 and FR-CV, use the inverter operation enable signal to shut off the inverter output.
Input the RDY signal of the FR-HC2 (RDYB signal of the FR-CV).
For the terminal used for X10 signal input, assign its function by setting "10" (X10) to any of
Pr. 178 to Pr. 182
.
(2) Brake resistor (MYS type) used at 100% torque/6%ED (FR-F720PJ-3.7K only)
Set
"1" in
Pr. 30
.
Set
"6%" in
Pr. 70
.
(3) When using the high-duty brake resistor (FR-ABR)
Set
"1" in
Pr. 30
.
Set
Pr. 70
as follows.
7.5K or lower............10%
11K, 15K...................6%
When making frequent starts/stops, use the optional brake resistor (MRS type, MYS type), high-duty brake resistor
(FR-ABR) and brake unit (FR-BU2) to increase the regenerative brake duty.
Use a power regeneration common converter (FR-CV) for continuous operation in regeneration status.
Use the high power factor converter (FR-HC2) to reduce harmonics, improve the power factor, or continuously use
the regenerative status.
Parameter
Number
Name
Initial
Value
Setting
Range
Description
30
Regenerative function
selection
0
0
Inverter without regenerative function,
Brake resistor (MRS type, MYS type),
Brake unit (FR-BU2),
Power regeneration common converter (FR-CV),
High power factor converter (FR-HC2)
1
Brake resistor (MYS type) used at 100% torque/6%ED,
High-duty brake resistor (FR-ABR)
2
High power factor converter (FR-HC2) when automatic
restart after instantaneous power failure is selected
70
Special regenerative
brake duty
0%
0 to 30%
Brake duty when using the high-duty brake resistor
(FR-ABR)
Type
Regenerative brake duty
FR-F720PJ-0.4K to 3.7K
3%
FR-F720PJ-5.5K or higher
FR-F740PJ-0.4K or higher
2%
Содержание FR-F700PJ Series
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Страница 346: ...341 APPENDIX This chapter provides the APPENDIX of this product Always read the instructions before using the equipment ...