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5.2
b: Application
u
b1: Operation Mode Selection
n
b1-03: Stopping Method Selection
Selects how the drive stops the motor when the Run command is removed or when a Stop command is entered.
No.
b1-03
Setting 0: Ramp to Stop
When the Run command is removed, the drive will decelerate the motor to stop. The deceleration rate is determined by the
active deceleration time. The default deceleration time is set to parameter C1-02.
When the output frequency falls below the level set in parameter b2-01, the drive will start DC injection or Short Circuit
Braking depending on the selected control mode.
Setting 1: Coast to Stop
When the Run command is removed, the drive will shut off its output and the motor will coast (uncontrolled deceleration) to
stop. The stopping time is determined by the inertia and the friction in the driven system.
Note:
After a stop is initiated, any subsequent Run command entered will be ignored until the minimum baseblock time (L2-03) has expired. Do
not enter Run command until it has come to a complete stop. Use DC Injection at Start
Start on page
104) or Speed Search
Setting 2: DC Injection Braking to Stop
When the Run command is removed, the drive will enter baseblock (turn off its output) for the minimum baseblock time
(L2-03). When the minimum baseblock time has expired, the drive will inject the amount DC current set in parameter b2-02
into the motor windings to brake the motor. The stopping time in DC Injection Braking to Stop is significantly faster compared
to Coast to Stop.
Motor speed
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Parameter Name
Stopping Method Selection
Run
command
Output
frequency
Motor speed
Figure 5.1 Coast to Stop
(Refer to b3: Speed Search on page
Run
command
ON
Output
frequency
Motor coasts
Minimum Baseblock
Figure 5.2 DC Injection Braking to Stop
ON
OFF
Drive output is shut off
104) to restart the motor before it has completely stopped.
OFF
DC Injection Braking
with the current set in
b2-02
Time (L2-03)
5.2 b: Application
Setting Range
0 to 3
(Refer to b2-03: DC Injection Braking Time at
Default
1
5
101
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