YASKAWA CIMR-ACA4011 Instruction Manual page 175

INFO
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.
Run Command
Output frequency
Minimum Base Block
Time (L2-03)
INFO
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.
Run Command
Output
frequency
MxC output voltage interrupted
-14
6
After the Stop Command is input, Run Commands are ignored until the Minimum Baseblock Time (L2-03) has
elapsed.
on
off
MxC output voltage interrupted
DC injection brake
DC injection brake time
Fig 6.15 DC Injection Braking (DB) Stop
Lengthen the Momentary Power Loss Minimum Base Block Time (L2-03) when overcurrent (OC) occurs while
stopping.
on on
off off
Operation wait time T
Fig 6.16 Coast to Stop with Timer
DC injection brake time
b2-04 × 10
b2-04
10
Operation wait time T
on
Deceleration time
(e.g., C1-02)
Minimum Base Block
Time (L2-03)
Minimum output frequency
Output frequency at
Stop Command input
100% (maximum output frequency)
Output frequency at
Stop Command input
100% (Maximum output frequency)