TECO A510s - Zero-Speed Operation of Sensor Vector (SV) and PM Vector (PMSV) Mode

4-101
time
time
time
time
time
time
RUN
Command
Frequency
Reference
(Fref)
Output
Frequency
after softstart
(Fout SFS)
Fmin (01-08)
B.B
Pre-Excitation
time
Fmin
B.B
coast to
stop
07-08
Fmin
B.B
B.B
Fmin
Zero Speed
operation
07-08
07-08
07-08
07-16
07-16
07-16
07-16
Zero Speed
operation
DC braking
DC braking
DC braking
DC braking
00-29=0
00-29=1
00-29=2
00-29=3
Pre-excitation
Pre-excitation
Pre-excitation
Pre-excitation
Figure 4.4.11 Zero-speed operation of sensor vector (SV) and PM vector (PMSV) mode
DC injection braking activates when the run command is removed and output frequency falls below the DC
injection braking start frequency (07-06). DC injection braking will be active for the time set in parameter 07-08
DC injection braking execution time. Refer to figure 4.4.62 for more information on the pre-excitation operation.