YASKAWA FSDrive-MV1000 Parameter Manual page 100

2.2 b: Application
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
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 turned OFF, Zero Speed Control is activated for the time set in b2-04, even if it was already
active before.
Figure 2.9
■ b1-06: Contact Input Reading
This parameter defines how the contact inputs are read. The inputs are acted upon every 1 ms or 2 ms depending upon the
setting.
No.
b1-06
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 noisy signal could cause erroneous operation.
Setting 1: Read twice (2 ms scan)
The state of a contact input is read twice. Only if the state does not change during the double reading, the input command
is processed. This reading process is slower but more resistant against noisy signals.
■ b1-07: LOCAL/REMOTE Run Selection
The drive has three separate control sources that can be switched using contact inputs (H1-
Selection) or 2 (External reference 1/2)) or the LO/RE key on the digital operator. Refer to
selection on page 167, Setting 2: External reference 1/2 selection on page 167
Key Function Selection on page 222
• LOCAL: Digital operator. The digital operator is used to set the frequency reference and Run command.
• REMOTE: External reference 1. The frequency reference and Run command source are set by b1-01 and b1-02.
• REMOTE: External reference 2. The frequency reference and Run command source are set by b1-15 and b1-16.
100
Run OFF ON
Command
Frequency
reference
Run at
E1-09
IM: Initial Excitation
Motor
Speed b2-03
DC Injection Braking (Zero
Speed Control) Time at Start
Figure 2.8 Run at the Minimum Frequency
Run OFF ON
Command
Frequency
reference
Zero
Speed
Control
IM: Initial Excitation
Motor
Speed b2-03
DC Injection Braking (Zero
Speed Control) Time at Start
Figure 2.9 Zero Speed Control
Name
Contact Input Reading
for details.
E1-09 Min.
Output Frequency
Run at
Zero Speed
E1-09
b2-01 Zero
Speed Level
b2-04
DC Injection Braking (Zero
Speed Control) Time at Stop
E1-09 Min.
Output Frequency
b2-01 Zero E1-09
Speed Level
b2-04
DC Injection Braking (Zero
Speed Control) Time at Stop
Setting Range
0 or 1
and
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
Control
common_TMonly
Zero Speed
Control
common_TMonly
Default
1
= 1 (LOCAL/REMOTE
Setting 1: LOCAL/REMOTE
o2-01: LO/RE (LOCAL/REMOTE)