Mitsubishi Electric FR-A820-00046 Instruction Manual page 844

Hide thumbs Also See for FR-A820-00046:
Table of Contents

Advertisement

(G) Control parameters
Setting of operating frequency (Pr. 10)
● By setting the frequency to operate the DC injection brake (zero speed control and servo lock) to
Pr. 10 "DC injection brake operation frequency", the DC injection brake (zero speed control and
servo lock) will operate when it reaches this frequency at the time of deceleration.
● When Pr. 10 = "9999", DC injection brake (zero speed control, servo lock) will start when the
frequency reaches Pr. 13 "Starting frequency".
● The DC injection brake operation frequency depends on the stopping method.
Stopping method
Press the STOP key on the
operation panel
Turning OFF of the STF/STR signal
Set the frequency to 0 Hz
Tab. 5-304: DC injection brake operation frequency and stopping method
● DC injection brake operation frequency will be fixed to 0 Hz at the time of PM sensorless vector
control (low-speed range high-torque mode disabled).
DC injection
brake
voltage
NOTES
When executing pre-excitation (zero speed control) at the time of Real sensorless vector control,
set Pr. 10 "DC injection brake operation frequency" to 0.5 Hz or lower since it may cause motor
vibration, etc., at the time of deceleration stop.
Initial value of Pr. 10 will automatically switch to 0.5 Hz at the time of vector control.
5 - 664
Parameter setting
0.5 Hz or higher in Pr. 10
Lower than 0.5 Hz in Pr. 10, and 0.5 Hz or
higher in Pr. 13
Lower than 0.5 Hz in both Pr. 10 and Pr. 13
Pr. 10 Operation
frequency
Time
Pr. 12
Operation
voltage
Time
Pr. 11 Operation time
DC injection brake operation
frequency
Pr. 10 setting
0.5Hz
Pr. 10 or Pr. 13 setting, whichever larger
Pr. 13 setting or 0.5 Hz, whichever larger
Fig. 5-328:
When Pr. 11 is set to a value between 0.1 and 10s
Parameters
I002753E

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents