YASKAWA T1000V, Техническое руководство

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5.2 b: Application
110 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Figure 5.5
Figure 5.5 Coast to Stop
Note: After a stop is initiated, any subsequent Run command that is entered will be ignored until the Minimum Baseblock Time (L2-
03) has expired. Do not attempt to start the motor again until it has come to a complete stop. To start the motor before it has
stopped completely, use DC Injection at start (
Refer to b2-03: DC Injection Braking Time at Start on page 114 ) or Speed Search
( Refer to b3: Speed Search on page 115 ).
Setting 2: DC Injection Braking to Stop
When the Run command is removed, the drive will baseblock (turn off its output) for the minimum baseblock time (L2-
03). Once the minimum baseblock time has expired, the drive will brake the motor by injecting DC current into the motor
windings. The stopping time will be reduced as compared to coast to stop. The level of DC Injection current is set by
parameter b2-02 (default = 50%).
Note: This function is not available when using PM Open Loop Vector.
Figure 5.6
Figure 5.6 DC Injection Braking to Stop
The time for DC Injection Braking is determined by the value set to b2-04 and by the output frequency at the time the
Run command is removed. It can be calculated by:
Figure 5.7
Figure 5.7 DC Injection Braking Time Depending on Output Frequency
Note: If an overcurrent (oC) fault occurs during DC Injection Braking to stop, lengthen the minimum baseblock time (L2-03) until the
fault no longer occurs.
Drive output frequency is shut off
Run
Command
Output
Frequency
Motor rpm
ON OFF
Run Command
Output Frequency
ON OFF
DC Injection Braking
Time at Stop
(b2-04)*
Minimum Baseblock Time (L2-03)
DC Braking
Current (b2-02)
DC Injection Braking
Motor Speed
= DC Injection brake time
b2-04 • 10 • Output frequency
Max. output frequency (E1-04)
Output frequency when
Stop command was entered
100%
(Maximum output
frequency)
10%
DC Injection braking time
b2-04× 10
b2-04