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Explanation of functions (parameters)
2
FUNCTIONS
2.3.7 DC injection brake (Pr. 10 , Pr. 11 , Pr. 12 )
* The factory setting varies according to the inverter capacity. (Refer to the following table for details.)
<Setting>
•Use Pr. 10 to set the frequency at which the DC injection brake operation is started.
•Use Pr. 11 to set the period during when the brake is operated.
•Use Pr. 12 to set the percentage of the power supply voltage.
•Change the Pr. 12 setting to 4% when using the inverter-dedicated (constant-torque
motor).
(If the Pr. 12 value remains unchanged from the factory setting and Pr. 71 is changed
to the setting for use of the constant-torque motor, the Pr. 12 setting is automatically
changed to 4%.)
.
By setting the DC injection brake
voltage (torque), operation time
and operation starting frequency,
the stopping accuracy of
positioning operation, etc. or the
timing of operating the DC
injection brake to stop the motor
can be adjusted according to the
load.
Parameter Name
Factory
Setting
Setting
Range
Remarks
10
DC injection brake
operation frequency
3Hz 0 to 120Hz
Setting is enabled when
Pr. 30 = "1".
(When Pr. 11 is set to "0s" or
Pr. 12 is set to "0%", DC
injection brake is not
operated.)
11
DC injection brake
operation time
0.5s 0 to 10s
12 DC injection brake voltage 6% 0 to 15%
CAUTION
Install a mechanical brake. No holding torque is provided.
Output frequency (Hz)
Time
Time
DC injection
brake voltage
"Operation
frequency"
Pr.10
Pr.12
"Operation
voltage"
Pr.11 "Operation time"