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DC braking to fully stop the motor. Refer to “b2 Group, DC Braking”for details.
□ For Open-Loop V/F Control, Closed-Loop V/F Control, Open-Loop Vector Control and PM
Open-Loop Vector Control:
When the output frequency falls below b2-00, DC Braking is enabled for the time set in
b2-03. Refer to Figure 6.3.
b2-03
(DC Braking Time at Stop)
ON
OFF
d1-08 Min. Output
Frequency
b2-00 Zero Speed
Holding Start Frequency
Deceleration Time
DC Braking
Run Command
Output
Frequency
Figure 6.3 Ramp to Stop
Note: If the b2-00 value is smaller than the d1-08 value, DC Braking is enabled when the output frequency falls
below the d1-08 value.
□ For Closed-Loop Vector Control, PM Closed-Loop Vector Control
When the output frequency falls below the b2-00 level, Zero Speed Holding is enabled for
the time set to b2-03. Refer to Figure 6.3.
b2-03
(DC Braking Time at Stop)
ON
OFF
d1-08 Min. Output
Frequency
b2-00 Zero Speed
Holding Start Frequency
Deceleration Time
Zero Speed Holding
Run Command
Output
Frequency
Figure 6.4 Ramp to Stop
Note: If the b2-00 value is smaller than the d1-08 value, Zero Speed Holding is enabled when the output
frequency falls below the d1-08 value.
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