Stopping Methods
6-21
îš„Coast to Stop
If the Stop Command is input (i.e., the Run Command is turned OFF) when b1-03 is set to 1, the Inverter out-
put voltage is interrupted. The motor coasts to a stop at the deceleration rate that counterbalances damage to
the machine and inertia including the load.
Fig 6.17 Coast to Stop
îš„DC Braking Stop
If the Stop Command is input (i.e., the Run Command is turned OFF) when b1-03 is set to 2, a wait is made
for the time set in L2-03 (Minimum Baseblock (BB) Time) and then the DC injection brake current set in b2-
02 is sent to the motor to apply a DC injection brake to stop the motor. The DC injection brake time is deter-
mined by the set value in b2-04 and the output frequency when the Stop Command is input.
Fig 6.18 DC Injection Braking (DB) Stop
INFO
After the Stop Command is input, Run Commands are ignored until the Minimum Baseblock Time (L2-03) has
elapsed.
INFO
Lengthen the Minimum Baseblock Time (L2-03) when an overcurrent (OC) occurs during stopping.
Output frequency
Run Command
ON
OFF
Inverter output freqeuencty interrupted.
Inverter output voltage interrupted
Output frequency
Run Command
ON
OFF
Minimum baseblock
time (L2-03)
DC injection brake time
DC injection brake
10 100% (maximum output frequency)
Output frequency at
Stop Command input
DC injection brake time
b2
-
04 10
b2
-
04
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