Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

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Motor brake and stop operation Parameter
6 - 100
6.9 Motor brake and stop operation
6.9.1 DC injection brake (Pr. 10 to Pr. 12)
The FR-E700 SC EC/ENE frequency inverter has an adjustable DC brake function.
This function uses the eddy current brake principle, stopping the motor by applying a pulsed DC volt-
age 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 "User group read selection" = 0.
Purpose Parameters that must be set
Refer to
Section
Motor braking torque adjustment DC injection brake Pr. 10–Pr. 12 6.9.1
Improve the motor braking torque with
an option Selection of a regenerative brake Pr. 30, Pr. 70 6.9.2
Coast the motor to a stop Selection of motor stopping method Pr. 250 6.9.3
Used to stop the motor with a mechani-
cal brake
(vibration restraint at stop-on-contact) Stop-on-contact control Pr. 6, Pr. 48,
Pr. 270, Pr. 275,
Pr. 276 6.9.4
Used to stop the motor with a mechani-
cal brake (operation timing of a
mechanical brake) Brake sequence function Pr. 278–Pr. 283,
Pr. 292 6.9.5
Pr.
No.
Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
10
DC injection brake
operation frequency
3 Hz 0–120 Hz
Set the operation frequency of the DC
injection brake.
13
71
Starting
frequency
Applied motor 6.7.2
6.8.2
11
DC injection brake
operation time
0.5 s
0 DC injection brake disabled
0.1–10 s
Set the operation time of the DC injection
brake.
12
DC injection brake
operation voltage
FR-E720S-008SC to 015SC 6%
0–30%
Set the DC injection brake voltage (torque).
When "0" is set, DC injection brake is disabled.
FR-E720S-030SC to 110SC,
FR-E740-016SC to 170SC
4%
FR-E740-230SC and 300SC 2%