6-14
6
Stopping Methods
îš‹ Selecting the Stopping Method when a Stop Command is Input
There are four methods of stopping the Inverter when a stop command is input:
• Deceleration to stop
• Coast to stop
• DC braking stop
• Coast to stop with timer
Set parameter b1-03 to select the Inverter stopping method. DC injection braking to stop (b1-03=2) and coast
to stop with a timer (b1-03=3) can not be set for Closed Loop Vector control.
îš„Related Parameters
îš„Deceleration to Stop (b1-03=0)
If the stop command is input (i.e., the run command is turned OFF) when b1-03 is set to 0, the motor deceler-
ates to stop according to the deceleration time that has been set. (Default: C1-02 (Deceleration Time 1))
If the output frequency when decelerating to stop falls below b2-01, the DC injection brake will be applied
using the DC current set in b2-02 for the time set in b2-04.
For deceleration time settings, refer to page 6-20, Setting Acceleration and Deceleration Times.
Fig 6.15 Deceleration to Stop
Parameter
No.
Name
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f with
PG
Open
Loop
Vector
Closed
Loop
Vector
b1-03 Stopping method selection 0 No Q Q Q Q
b1-05 Zero speed operation selection 0 No No No No A
b2-01 Zero speed level 0.5 Hz No A A A A
b2-02 DC injection braking current 50% No A A A No
b2-04 DC injection braking time at stop 0.50 s No A A A A
Run command
Output frequency
DC injection brake
Decelerates to stop
deceleration time
DC injection brake
time when
stopping (b2-04)
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