YASKAWA FSDrive-MV1000 Parameter Manual page 99

b1-04: Reverse Operation Selection
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For some applications, reverse motor rotation is not appropriate and may cause problems (e.g., air handling units, pumps,
etc.). Setting parameter b1-04 to 1 instructs the drive to ignore any Reverse run commands.
No.
b1-04
Setting 0: Reverse operation enabled
Possible to operate the motor in both forward and reverse directions.
Setting 1: Reverse operation disabled
The drive disregards a Reverse run command or a negative frequency reference.
b1-05: Action Selection below Minimum Output Frequency (CLV)
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Parameter b1-05 sets the operation when the frequency reference is lower than the minimum output frequency set in
parameter E1-09.
No.
Action Selection below Minimum Output Frequency
b1-05
Setting 0: Follow the Frequency Reference (E1-09 is disabled)
The drive adjusts the motor speed following the speed reference, even if the frequency reference is below the setting of
parameter E1-09. When a Stop command is input and the motor speed is smaller than the setting of b2-01, Zero Speed
Control (not position lock) is performed for the time set in parameter b2-04 before the drive output shuts off.
Figure 2.6
Setting 1: Coast to stop
The motor is started first when the frequency reference exceeds the setting of parameter E1-09. Once the motor is
running and the frequency reference falls below E1-09 the drive output is shut off and the motor coasts. When the motor
speed falls below the zero speed level set in parameter b2-01, Zero Speed Control is activated for the time set in b2-04.
Figure 2.7
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
Name
Reverse Operation Selection
Name
(E-09)
Run OFF ON
Command
Frequency
reference
Zero Speed
Control
IM: Initial Excitation
Motor
b2-03
Speed
DC Injection Braking (Zero
Speed Control)Time at Start
Figure 2.6 Run at the Frequency Reference
Run OFF ON
Command
Frequency
reference
IM: Initial Excitation
Motor
Speed
DC Injection Braking (Zero
Speed Control) Time at Start
Figure 2.7 Coast to Stop.
Setting Range
0 or 1
Setting Range
0 to 3
E1-09 Min.
Output Frequency
E1-09
b2-01 Zero
Speed Level
DC Injection Braking (Zero
Speed Control) Time at Stop
E1-09 Min.
Output Frequency
Motor
Coasts
b2-01 Zero
Speed Level
b2-03 b2-04
DC Injection Braking (Zero
Speed Control) Time at Stop
2.2 b: Application
Default
1
Default
0
Zero Speed
Control
b2-04
common_TMonly
Zero Speed
Control
common_TMonly
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