Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации

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Parameter Motor brake and stop operation
FR-D700 SC EC 6 - 81
6.8 Motor brake and stop operation
6.8.1 DC injection brake (Pr. 10 to Pr. 12)
The FR-D700 SC EC frequency inverter has an adjustable DC brake function.
This function uses the eddy current brake principle, stopping the motor by applying a pulsed DC
voltage to the motor stator.
The pulsed DC voltage applied to the motor stator can achieve stopping torques of around 25
to 30% of the motor’s rated torque.
The above parameters can be set when Pr. 160 = 0.
Purpose Parameters that must be set
Refer to
Section
Motor braking torque adjustment DC injection brake Pr. 10–Pr. 12 6.8.1
Improve the motor braking torque
with an option Selection of a regenerative brake Pr. 30, Pr. 70 6.8.2
Coast the motor to a stop Selection of motor stopping method Pr. 250 6.8.3
Pr.
No.
Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
10
DC injection
brake operation
frequency
3Hz 0–120Hz
Set the operation frequency of the
DC injection brake.
13
71
Starting
frequency
Applied motor 6.6.2
6.7.2
11
DC injection
brake operation
time
0.5s
0 DC injection brake disabled
0.1–10s
Set the operation time of the DC
injection brake.
12
DC injection
brake operation
voltage
FR-D720S-008SC and
014SC
6%
0–30%
Set the DC injection brake voltage
(torque). When "0" is set, DC injec-
tion brake is disabled.
FR-D720S-025SC or
more,
FR-D740-012SC to
160SC
4%