Selection Of A Regenerative Brake (Pr. 30, Pr. 70) - Mitsubishi Electric FR-E720-0.1KNC Instruction Manual

As stop holding torque is not produced, install a mechanical brake.
Parameters referred to
Pr. 13 Starting frequency
Pr. 71 Applied motor

5.12.2 Selection of a regenerative brake (Pr. 30, Pr. 70)

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.
Parameter
Name
Number
Regenerative function
30
selection
Special regenerative
70
brake duty
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 197)
(1) When using the brake resistor (MRS type, MYS type), brake unit (FR-BU2).
Set Pr. 30 to "0" (initial value). The Pr. 70 setting is made invalid.
At this time, the regenerative brake duty is as follows.
Model
FR-E720-0.4KNC to 3.7KNC
FR-E720S-0.4KNC or higher
FR-E720-5.5KNC or higher
FR-E740-0.4KNC or higher
(2) When using the brake resistor (MYS type) at 100% torque / 6%ED (FR-E720-3.7KNC only)
Set "1" in Pr. 30.
Set "6%" in Pr. 70.
(3) When using the high-duty brake resistor (FR-ABR) (0.4K or higher)
Set "1" in Pr. 30.
Set Pr. 70 as follows.
7.5K or lower ............ 10%
11K, 15K................... 6%
CAUTION
Refer to page 138
Refer to page 144
Initial Setting
Value Range
0
0% 0 to 30%
Regenerative Brake Duty
3%
2%
Motor brake and stop operation
Inverter without regenerative function
0 Brake resistor (MRS type, MYS type)
Brake unit (FR-BU2)
Brake resistor (MYS type) used at 100% torque / 6%ED
1
High-duty brake resistor (FR-ABR)
2 For manufacturer setting. Do not set.
Brake duty (6%) when using the brake resistor (MYS type),
Brake duty when using the high-duty brake resistor
(FR-ABR)(10%)
Description
155
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