Yaskawa VS-616G5 Series Revision F Programming Manual - Manual (Page 17)

VS-616G5 Programming Manual 17
V/f V/f w/PG Open Loop
Vector
Flux
Vector
Setting Range: 0.00 to 10.00s
Factory Default: 0.00s
DC injection braking at start can be used to stop a spinning motor (or when motor rotation direction is
unknown) prior to running. DC injection braking time at start (or initial excitation for flux vector con-
trol) is set in units of 0.1 second. When B2-03 is set to “0”, DC injection braking is disabled and accel-
eration starts from the minimum output frequency.
Setting Range: 0.00 to 10.00s
Factory Default: 0.00s
DC injection braking time at stop (or initial excitation for flux vector control) is set in units of 0.1 sec-
ond. When B2-04 is set to “0”, DC injection braking is disabled, and the inverter output shuts OFF.
When coast to stop is selected as the stopping method (B1-03), DC injection braking at stop is disabled.
Setting Range: 0 to 500%
Factory Default: 0%
This parameter allows the magnetizing motor flux to be boosted when starting the motor. This parameter
will facilitate a quick ramp-up of the torque reference and magnetizing current reference to reduce motor
slip during start. A setting of 100% equals motor no-load current E1-09. This flux level will be applied
below Minimum Output Frequency (E1-09) until the DC Injection Time at Start (B2-03) expires. This
parameter is useful when starting motors that are relatively larger than the inverter, due to the requirement
for increased magnetizing current. This parameter may also compensate for reduced starting torque due to
motor circuit inefficiencies.
B2-03 DC Braking Time at Start DCInj Time@Start B B B B
B2-04 DC Braking Time at Stop DCInj Time@Stop B B B B
B2-08 Magnetic Flux Compensation Level
<1110>
FieldComp - - A A
DC injection Braking
Time at Stop
E1-09
Min. Output Frequency
B2-04
Figure 6 DC Injection Braking Time at Stop
Section B: Application Parameters
B2 DC Braking