YASKAWA Z1000 User Manual page 153

WARNING! Sudden Movement Hazard. If b1-17 is set to 1 and an external Run command is active during power up, the motor will begin
rotating as soon as the power is switched on. Proper precautions must be taken to ensure that the area around the motor is safe prior to
powering up the drive. Failure to comply may cause serious injury.
n b2-01: DC Injection Braking Start Frequency
Active when "Ramp to Stop" is selected as the stopping method (b1-03 = 0).
No.
b2-01
The function triggered by parameter b2-01 depends on the control mode that has been selected.
V/f (A1-02 = 0)
For these control modes, parameter b2-01 sets the starting frequency for DC Injection Braking at Stop. When the output
frequency falls below the setting of b2-01, DC Injection Braking is enabled for the time set in parameter b2-04.
Note: If b2-01 is set to a smaller value than parameter E1-09 (minimum frequency), then DC Injection Braking will begin as soon as the frequency
falls to the value set to E1-09.
OLV/PM (A1-02 = 5)
For these control modes, parameter b2-01 sets the starting frequency for Short-Circuit Braking at stop. When the output
frequency falls below the setting of b2-01, Short-Circuit Braking is enabled for the time set in parameter b2-13. If DC Injection
Braking time is enabled at stop, then DC Injection Braking is performed for the time set in b2-04 after Short-Circuit Braking
is complete.
Note: If b2-01 is set to a smaller value than parameter E1-09 (minimum frequency), then DC Injection Braking will begin as soon as the frequency
falls to the value set to E1-09.
n
b2-02: DC Injection Braking Current
Sets the DC Injection Braking current as a percentage of the drive rated current. The carrier frequency is automatically reduced
to 1 kHz when this parameter is set to more than 50%.
No.
b2-02
The level of DC Injection Braking current affects the strength of the magnetic field attempting to lock the motor shaft.
Increasing the current level will increase the amount of heat generated by the motor windings. Do not set this parameter higher
than the level necessary to hold the motor shaft.
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Name
DC Injection Braking Start Frequency
E1-09 Min. Frequency
b2-01 Zero Speed Level
Output
frequency
Figure 4.28 DC Injection Braking at Stop for V/f
E1-09 Min. Frequency
b2-01 Zero Speed Level
Output
frequency
Figure 4.29 Short-Circuit Braking at Stop in OLV/PM
Name
DC Injection Braking Current
4.13 Advanced Drive Setup Adjustments
Setting Range
0.0 to 10.0 Hz
DC Injection
Braking
Time
b2-04
Short Circuit
DC Injection
Braking Braking
Time
b2-13 b2-04
Setting Range
0 to 100%
Default
Determined by
A1-02
4
Default
50%
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