YASKAWA FSDrive-MV1000 - Page 106

2.2 b: Application
106 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
Setting 2: Run at the minimum frequency
Whenever a Run command is active and the frequency reference is smaller than the value of parameter E1-09, the drive
runs the motor at the speed set in E1-09. When the Run command is turned OFF, the drive decelerates the motor. As soon
as the motor speed reaches the zero speed level set in b2-01, Zero Speed Control is activated for the time set in b2-04.
Figure 2. 8
Figure 2.8 Run at the Minimum Frequency
Setting 3: Zero Speed Control
The drive applies Zero Speed Control whenever the frequency reference setting is below the value of parameter E1-09.
When the Run command is removed, Zero Speed Control is stopped.
Figure 2. 9
Figure 2.9 Zero Speed Control
n b1-06: Contact Input Reading
Defines how the contact inputs are read. The inputs are acted upon every 1 ms or 2 ms depending upon the setting.
Setting 0: Read once (1 ms scan)
The state of a contact input is read once. If the state has changed, the input command is immediately processed. With this
setting, the drive responds more quickly to contact inputs, but a signal with electrical interference could cause erroneous
operation.
Setting 1: Read twice (2 ms scan)
The state of a contact input is read twice. The input command is processed only if the state does not change during the
double reading. This reading process is slower than the “Read once” process, but it is more resistant to signals with
electrical interference.
No. Name Setting Range Default
b1-06 Contact Input Reading 0 or 1 1
b2-01 Zero
Speed Level
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Output Frequency
b2-04
DC Injection Braking (Zero
Speed Control) Time at Stop
Run at
E1-09
Run at
E1-09
b2-03
DC Injection Braking (Zero
Speed Control) Time at Start
IM: Initial Excitation
common_TMonly
Zero
Speed
Control
b2-01 Zero
Speed Level
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Output Frequency
b2-04
DC Injection Braking (Zero
Speed Control) Time at Stop
E1-09
b2-03
DC Injection Braking (Zero
Speed Control) Time at Start
IM: Initial Excitation
common_TMonly
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