Motor Brake And Stop Operation; Dc Injection Brake (Pr. 10 To Pr. 12) - Mitsubishi Electric F700 Instruction Manual

3.8 Motor brake and stop operation

Purpose
Motor braking torque adjustment
Improve the motor braking torque
with an option
Coast the motor to a stop
3.8.1

DC injection brake (Pr. 10 to Pr. 12)

The DC injection brake can be operated at a motor stop to adjust the stop timing and braking torque.
Parameter
Name
Number
DC injection brake
10
operation frequency
DC injection brake
11
operation time
DC injection brake
12
operation voltage
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 140)
When Pr.11="0.1 to 10s"
DC injection
Pr.12
Operation
brake
voltage
voltage
Pr.11 Operation time
When Pr.11="8888"
DC injection
Pr.12
Operation
brake
voltage
voltage
Y13 signal
ON
Parameter that must be set
DC injection brake
Selection of a regenerative brake
Selection of motor stopping method
Initial Value
3Hz
0.5s
7.5K or less 4%
11K or more 2%
(1) Operation frequency setting (Pr.10)
⋅ After the frequency at which the DC injection brake will be operated is
set to Pr. 10, the DC injection brake is operated when this frequency is
reached during deceleration.
⋅ At the Pr. 10 setting of "9999", the DC injection brake is operated when
deceleration is made to the frequency set in Pr. 13 Starting frequency.
(2) Operation time setting (Pr.11)
Time
⋅ Use Pr. 11 to set the duration period the DC injection brake is applied.
⋅ When Pr. 11 = "0s", the DC injection brake is not operated. (At a stop, the
Time
motor coasts.)
⋅ When Pr. 11="8888", the DC injection brake is applied while X13 signal
is on.
⋅ For the terminal used for X13 signal input, set "13" in any of Pr. 178 to Pr.
189 to assign the function. (Refer to page 85.)
⋅ When the motor does not stop due to large load moment (J), increasing
the setting produces an effect.
Time
Time
OFF

Motor brake and stop operation

Pr.10 to Pr.12
Pr.30
Pr. 250
Setting Range
Set the operation frequency of the DC
0 to 120Hz
injection brake.
9999 Operated at Pr. 13 or less.
0 DC injection brake disabled
Set the operation time of the DC injection
0.1 to 10s
brake.
8888 Operate when X13 signal is on
0 DC injection brake disabled
0.1 to 30% Set the DC injection brake voltage (torque).
Refer to Page
81
83
84
Description
81
Pr. 9
page 78
Pr. 13
page 76
3