YASKAWA Z1000 User Manual page 154

4.13 Advanced Drive Setup Adjustments
n b2-03: DC Injection Braking Time at Start
Sets the time of DC Injection Braking at start. Used to stop a coasting motor before restarting it or to apply braking torque at
start. Disabled when set to 0.00 s.
No.
b2-03
Note: Before starting an uncontrolled rotating motor (e.g., a fan motor driven by windmill effect), use DC Injection or Speed Search to stop the
motor or detect motor speed before starting it. Otherwise, motor stalling and other faults can occur.
n b2-04: DC Injection Braking Time at Stop
Sets the time of DC Injection Braking at stop. Used to completely stop a motor with high inertia load after ramp down. Increase
the value if the motor still coasts by inertia after it should have stopped. Disabled when set to 0.00 s.
No.
b2-04
n b3-01: Speed Search Selection at Start
Determines if Speed Search is automatically performed when a Run command is issued.
No.
b3-01
Setting 0: Disabled
This setting starts operating the drive at the minimum output frequency when the Run command is entered. 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
This setting performs Speed Search when the Run command is entered. The drive begins running the motor after Speed Search
is complete.
n b3-02: Speed Search Deactivation Current
Sets the operating current for Speed Search as a percentage of the drive rated current. Normally there is no need to change
this setting. Lower this value if the drive has trouble restarting.
No.
b3-02
Note: When parameter A1-02 = 0 (V/f Control) the factory default setting is 120.
n b3-03: Speed Search Deceleration Time
Sets the output frequency reduction ramp used by the Current Injection Method of Speed Estimation (b3-24 = 1). The time
entered into b3-03 will be the time to decelerate from maximum frequency (E1-04) to minimum frequency (E1-09).
No.
b3-03
n b3-04: V/f Gain during Speed Search (Speed Estimation Type)
During Speed Search, the output voltage calculated from the V/f pattern is multiplied with this value. Changing this value can
help reduce the output current during Speed Search.
No.
b3-04
154
Name
DC Injection Braking Time at Start
Name
DC Injection Braking Time at Stop
Parameter Name
Speed Search Selection at Start
Name
Speed Search Deactivation Current
Name
Speed Search Deceleration Time
Name
V/f Gain during Speed Search
Setting Range
0.00 to 10.00 s
Setting Range
0.00 to 10.00 s
Setting Range
0, 1
Setting Range
0 to 200%
Setting Range
0.1 to 10.0 s
Setting Range
10 to 100%
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Default
0.00 s
Default
0.00 s
Default
Determined by
A1-02
Default
Determined by
A1-02
Default
2.0 s
Default
Determined by
o2-04