YASKAWA H6B1A002, Technical Reference

Page: 196 / 794

5.2 b: Application
196 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
b1-40: Deceleration Abort Time
C1-02: Deceleration Time 1 C1-04: Deceleration Time 2
L3-04: Stall Prevention during Decel
Figure 5.14 Deceleration Abort Time Chart
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b2: DC Injection Braking
b2 parameters set the DC Injection Braking functions.
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DC Injection Braking: A braking method that injects DC current into the motor windings. This function should not
be used too frequently, because it generates a fair amount of heat in the motor.
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b2-01: DC Injection/Zero SpeedThreshold
No.
(Hex.)
Name Description
Default
(Range)
b2-01
(0189)
DC Injection/Zero
SpeedThreshold Sets the frequency to start DC Injection Braking. 0.5 Hz
(0.0 - 10.0 Hz)
Note:
This parameter is available when b1-03 = 0 [Stopping Method Selection = Ramp to Stop] .
Function of b2-01
b2-01 sets the frequency to start DC Injection Braking at stop. When the output frequency is less than or equal to the value set in b2-01 , the drive will inject the quantity of DC current
set in b2-02 [DC Injection Braking Current] into the motor for the time set in b2-04 [DC Inject Braking Time at Stop] .
b2-01: DC Injection/Zero SpeedThreshold
b2-04: DC Inject Braking Time at Stop E1-09: Minimum Output Frequency
Figure 5.15 DC Injection Braking at Stop
Note:
When b2-01 ≤ E1-09 [Minimum Output Frequency] , the drive will start DC Injection Braking from the frequency set in E1-09 .
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b2-02: DC Injection Braking Current
No.
(Hex.)
Name Description
Default
(Range)
b2-02
(018A)
DC Injection Braking
Current Sets the DC Injection Braking current as a percentage of the drive rated current. 50%
(0 - 100%)