Dc Dynamic Brake (Pr. 10, Pr. 11, Pr. 12) - Mitsubishi Electric FR-A520-0.4K-NA Instruction Manual

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DC dynamic brake (Pr. 10, Pr. 11, Pr. 12)

Pr. 10 "DC dynamic brake operation frequency"
Pr. 11 "DC dynamic brake operation time"
Pr. 12 "DC dynamic brake voltage"
By setting the stopping DC dynamic brake voltage (torque), operation time and operation starting frequency,
the stopping accuracy of positioning operation, etc. or the timing of operating the DC dynamic brake to stop
the motor is adjusted according to the load.
Parameter Factory
Number Setting
10 3Hz
11 0.5 s
7.5K or less 4%
12
11K or more 2%
<Setting>
·
Use Pr. 10 to set the frequency at which the DC dynamic brake application is started.
By setting "9999" in Pr. 10, the motor is decelerated to the frequency set in Pr. 13 and braked.
·
Use Pr. 11 to set the period during when the brake is operated. By setting "8888" in Pr. 11, the DC dynamic
brake is operated while the X13 signal is on.
·
Use any of Pr. 180 to Pr. 186 to assign the terminal used to input the X13 signal.
·
Use Pr. 12 to set the percentage of the power supply voltage.
·
When using the inverter dedicated motor (constant-torque motor), change the Pr. 12 setting as follows:
3.7K or less...4%, 5.5K or more...2%
Note: 1. When the Pr. 12 setting is either of the following values for 5.5K and 7.5K, it is automatically
changed when the Pr. 71 setting is changed:
(1) When Pr. 12 setting is 4% (factory setting)
The Pr. 12 setting is changed to 2% automatically when the Pr. 71 setting is changed from
[general-purpose motor selection value (0, 2 to 8, 20, 23, 24)] to [constant-torque motor
selection value (1, 13 to 18)].
(2) When Pr. 12 setting is 2%
The Pr. 12 setting is changed to 4% (factory setting) automatically when the Pr. 71 setting is
changed from [constant-torque motor selection value (1, 13 to 18)] to [general-purpose motor
selection value (0, 2 to 8, 20, 23, 24)].
2. When Pr. 11 = "0 or 8888" or Pr. 12 = 0, DC dynamic brake operation cannot be performed.
In the orientation (using option) mode, do not set "8888" in Pr. 11.
The motor may not be stopped in the correct position.
Install a mechanical brake. No holding torque is provided.
Setting Range Remarks
9999: Operated at
0 to 120Hz, 9999 or below Pr. 13
value.
8888: Operated
0 to 10 s, 8888 when X13 signal
switches on.
0 to 30%
Related parameters
Pr. 13 "starting frequency"
Pr. 71 "applied motor"
DC dynamic
Pr.12
brake voltage
Operation voltage
CAUTION
69
PARAMETERS
Pr.10 Operation frequency
Time
Time
Pr.11 Operation time