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Basic Functions
(When Pr. 11 is set to "0s" or Pr. 12 is set to "0%", DC injection brake is not operated.)
<Setting>
•Use Pr. 10 to set the frequency at which the DC injection brake application is started.
•Use Pr. 11 to set the period during when the brake is operated.
•
Use Pr. 12 to set the percentage to the power supply voltage.
•Set 4% in Pr. 12 when using the inverter-dedicated motor (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 a constant-torque motor, the Pr. 12 setting is automatically
changed to 4%.
3.3.8 Starting frequency (Pr. 13)
Parame
ter
Name
Factory
Setting
Setting
Range
10 DC injection brake operation frequency 3Hz 0 to 120Hz
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.
The starting frequency at which
the start signal is turned on can be
set in the range 0 to 60Hz.
Parame
ter
Name
Factory
Setting
Setting
Range
13 Starting frequency 0.5Hz 0 to 60Hz
CAUTION
The inverter will not start if the frequency setting signal is less than the value
set in Pr. 13 "starting frequency".
For example, when 5Hz is set in Pr. 13, the inverter starts outputting when the
frequency setting reaches 5Hz.
CAUTION
Note that when Pr. 13 is set to any value lower than Pr. 2 "minimum
frequency", simply turning on the start signal will run the motor at the
preset frequency if the command frequency is not input.
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Related parameters
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•
Minimum frequency setting ⇒ Pr. 2 "minimum frequency" (Refer to page 57.)
60
Pr.13
ON
0
Output
frequency
(Hz)
Setting range
Time
Forward rotation