IMPULSE®•G+ & VG+ Series 4 Instruction Manual – February 2017
5-55
Tuning
• D1 DC Injection Braking
• D2 Motor Slip Compensation
• D3 Torque Compensation
• D4 Automatic Speed Regulator (ASR) Tuning
• D5 Torque Control
• D8 Dwell Function
• D9 S-Curve Acceleration/Deceleration
• D10 Carrier Frequency
• D11 Hunting Prevention
DC Injection
With decel to stop enabled (B03-03=0), upon removal of the run command, the IMPULSE
®
•G+ and
VG+ Series 4 drive controls motor deceleration according to the Decel Time setting (B05-02), until
output frequency reaches the DC Injection Braking Start Frequency (D01-01 setting). Then the
IMPULSE
®
•G+ and VG+ Series 4 frequency output is turned off and DC injection current is applied
to the motor. The effective DC injection time and current should be set to provide adequate stopping
without excessive motor heating. The DC injection voltage is determined by the DC injection braking
current and motor impedance.
Table 5-44: DC Injection Parameter Settings
Figure 5-17: DC Braking Sequence
Parameter Display Function Range Default
D01-01 DCInj Start Freq DC Injection Braking Frequency
Start
0.0–10.0 Hz 0.5
D01-02* DCInj Current Sets the DC Injection Braking
current as a percentage of the
drive rated current.
0–100% 50
D01-03 DCInj Time@Start DC Injection Braking Time 0.00–10.00 sec 0.00
D01-04 DCInj Time@Stop DC Injection Braking Time at Stop 0.00–10.00 sec 0.05
* Not available in the Flux Vector control method (A01-02 = 3).
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