YASKAWA A1000 Series Quick Start Manual page 70

4 Start-Up Programming & Operation
V/f, V/f w/PG and OLV (A1-02 = 0, 1, 2)
For these control modes, parameter b2-01 sets the starting frequency for DC Injection Braking at stop. Once the output
frequency falls below the setting of b2-01, DC Injection Braking is enabled for the time set in parameter b2-04.
Figure 60
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 and AOLV/PM (A1-02 = 5, 6)
For these control modes, parameter b2-01 sets the starting frequency for Short-Circuit Braking at stop. Once 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.
Figure 61
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.
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.
Once the output frequency falls below the setting of b2-01, Zero Speed Control is enabled for the time set in parameter
b2-04 if b1-05 = 0.
Figure 62
Note: If b2-01 is set to lower than the minimum frequency (E1-09), then Zero Speed Control begins at the frequency set to E1-09.
b3-01: Speed Search Selection at Start
■
Determines if Speed Search is automatically performed when a Run command is issued or not.
No.
b3-01
Setting 0: Disabled
When the Run command is entered, the drive starts operating at the minimum output frequency. If external Speed Search
1 or 2 is already enabled by a digital input, the drive will start operating with Speed Search.
Setting 1: Enabled
Speed Search is performed whenever the Run command is entered. The drive begins running the motor once Speed
Search is complete.
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E1-09 Min. Frequency
b2-01 Zero Speed Level
Output
frequency
Figure 60 DC Injection Braking at Stop for V/f, V/f w/PG and OLV
E1-09 Min. Frequency
b2-01 Zero Speed Level
Output
frequency
Figure 61 Short-Circuit Braking at Stop in OLV/PM and AOLV/PM
E1-09 Min. Frequency
b2-01 Zero Speed Level
Output
frequency
Figure 62 Zero Speed Control at Stop in CLV and CLV/PM
Parameter Name
Speed Search Selection at Start
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
DC Injection
Braking
Time
b2-04
Short Circuit
DC Injection
Braking Braking
Time
b2-13 b2-04
Zero Speed
Control
Time
b2-04
Setting Range
0 or 1
Default
Determined by A1-02