YASKAWA U1000 iQpump Drive, Техническое руководство

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b2-03
DC Inj. Braking Time at Start
IM: Initial Excitation
PM: Zero Spd. Contr.
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Output Frequency
b2-04
DC Inj. Braking Time at Stop
Motor
Coasts
b2-01 DC Inj.
Braking Start
Frequency
Figure 5.12 Coast to Stop
Setting 2: Run at the Minimum Frequency
When a Run command is active and the frequency reference is smaller than the parameter E1-09 setting, the drive runs the
motor at the speed set in E1-09. When the Run command is removed, 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.
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
b2-04
Run at
E1-09
Run at
E1-09
b2-03
IM: Initial Excitation
PM: Zero Spd. Contr.
Output Frequency
DC Inj. Braking Time at Start DC Inj. Braking Time at Stop
b2-01 DC Inj.
Braking Start
Frequency
Figure 5.13 Run at the Minimum Frequency
Setting 3: Zero Speed Control
The drive applies Zero Speed Control when the frequency reference setting falls below the value of E1-09. Removing the Run
command when the drive is operating at or above the frequency set to E1-09 will activate Zero Speed Control for the time set
in b2-04, regardless of whether Zero Speed Control was already active.
Zero
Speed
Control
Run
Command
Frequency
reference
Motor
Speed
OFF ON
Zero Speed
Control
E1-09 Min.
Output Frequency
b2-04
E1-09
b2-03
IM: Initial Excitation
PM: Zero Speed Contr.
DC Injection Braking Time at Start DC Injection Braking Time at Stop
b2-01 DC Inj.
Braking Start
Frequency
Figure 5.14 Zero Speed Control
n b1-06: Digital Input Reading
Defines how the digital inputs are read. The inputs are acted upon every 1 ms or 2 ms depending upon the setting.
No. Name Setting Range Default
b1-06 Digital Input Reading 0, 1 1
Setting 0: Read once (1 ms scan)
The state of a digital input is read once. If the state has changed, the input command is immediately processed. With this setting
the drive responds more quickly to digital inputs, but a noisy signal could cause erroneous operation.
Setting 1: Read twice (2 ms scan)
The state of a digital 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 noisy signals.
5.2 b: Application
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual 193
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Parameter Details