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2.3.7
DC injection brake (Pr. 10
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
DC injection brake
10
operation frequency
DC injection brake
11
operation time
12
DC injection brake voltage
* 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%.)
.
Install a mechanical brake. No holding torque is provided.
Factory
Name
Setting
3Hz
0.5s
CAUTION
Explanation of functions (parameters)
, Pr. 11
Pr.12
DC injection
"Operation
brake voltage
voltage"
Setting
Range
0 to 120Hz
0 to 10s
6%
0 to 15%
69
, Pr. 12
Pr.10
"Operation
frequency"
Time
Time
Pr.11 "Operation time"
Remarks
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.)
)
2
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