Run command
Output frequency
ON OFF
E1-09 Min. Output Frequency
b2-01 DC Injection Braking Start Frequency
DC Injection Braking
b2-04
Deceleration in the time set
Figure i.54 DC Injection Braking at Stop for V/f, V/f w/PG, and OLV
Note: If b2-01
is set to a smaller value than E1-09 (Minimum Output Frequency), then DC Injection Braking will begin when the frequency falls
to the E1-09 value.
OLV/PM and AOLV/PM (A1-02 = 5, 6)
When the output frequency falls below the setting of b2-01, drive output is shut down, and DC Injection Braking is performed
for the time set in b2-04.
Run command
Output frequency
ON OFF
Short Circuit Braking
E1-09 Min. Output Frequency
b2-01 DC Injection Braking Start Frequency
Deceleration in the time set
Figure i.55 Coast to Stop (OLV/PM and AOLV/PM)
Note: If b2-01
is set to a smaller value than E1-09 (Minimum Output Frequency), then DC Injection Braking will begin when the frequency falls
to the E1-09 value.
The drive will not perform short-circuit braking when b2-01 = E1-09 = 0 Hz.
CLV and CLV/PM (A1-02 = 3, 7)
For these control modes, parameter b2-01 sets the starting frequency for Zero Speed Control (not position lock) at Stop. When
the output frequency falls below the setting of b2-01, Zero Speed Control is enabled for the time set in parameter b2-04.
Run command
Output frequency
ON OFF
Zero speed control
b2-04
Deceleration in the time set
E1-09 Min. Output Frequency
b2-01 DC Injection Braking Start Frequency
Figure i.56 Zero Speed Control at Stop in CLV and CLV/PM
Note: If b2-01 is set to lower than E1-09 (Minimum Output Frequency), then Zero Speed Control begins at the frequency set to E1-09.
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.
i.5 Start-Up Programming and Operation
68
YASKAWA ELECTRIC TOEP C710636 04D U1000 Industrial MATRIX Drive Quick Start Guide
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