Yaskawa Matrix Converter - Manual (Page 179)

6
-14
„ DC Braking Stop
If the Stop Command is input (i.e., the Run Command is turned off) when b1-03 is set to 2, then the MxC will
wait for the duration set to L2-03 (Momentary Power Loss Minimum Baseblock Time) before applying DC
Injection Braking current (set in b2-02) to the motor. DC Injection Brake time is determined by the set value in
b2-04 and the output frequency.
Fig 6.15 DC Injection Braking (DB) Stop
„ Coast to Stop with Timer
If the Stop Command is input (i.e., the Run Command is turned off) when b1-03 is set to 3, the MxC output
will be shut off to allow the motor to coast to stop. After the Stop Command is input, Run Commands are
ignored until time T has elapsed. The length of T depends upon the output frequency when the Stop Command
is input as well as the deceleration time.
Fig 6.16 Coast to Stop with Timer
INFO
After the Stop Command is input, Run Commands are ignored until the Minimum Baseblock Time (L2-03) has
elapsed.
INFO
Lengthen the Momentary Power Loss Minimum Base Block Time (L2-03) when overcurrent (OC) occurs while
stopping.
MxC output voltage interrupted
Output frequency
Run Command
on off
Minimum Base Block
Time (L2-03)
DC injection brake time
DC injection brake
10 㧑 100% (maximum output frequency)
Output frequency at
Stop Command input
DC injection brake time
b2-04 × 10
b2-04
Output
frequency
Run Command
on on on off off
MxC output voltage interrupted
Operation wait time T
100% (Maximum output frequency) Minimum output frequency
Output frequency at
Stop Command input
Operation wait time T
Deceleration time
(e.g., C1-02)
Minimum Base Block
Time (L2-03)