YASKAWA T1000V, Техническое руководство

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5.2 b: Application
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 131
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◆ b8: Energy Saving
The Energy Saving feature improves overall system operating efficiency by operating the motor at its most efficient
level. This is accomplished by continuously monitoring the motor load and controlling the motor so that it always
operates near its rated slip frequency.
Note: Energy Saving is mainly designed for applications with variable torque (Normal Duty) but is not appropriate for applications
where the load may suddenly increase.
■
b8-01: Energy Saving Control Selection
Enables or disables the Energy Saving function.
Setting 0: Disabled
Setting 1: Enabled
■ b8-02: Energy Saving Gain (OLV only)
Sets the gain that is used to for magnetizing current reduction during Energy Saving. A higher value results in lower
magnetization of the motor and thereby less energy consumption. However, if b8-02 is too high the motor might stall.
■
b8-03: Energy Saving Control Filter Time Constant (OLV only)
Parameter b8-03 sets the response time for Energy Saving. Although lowering this value allows for a quicker response,
instability may result if it is too low.
■ b8-04: Energy Saving Coefficient Value (V/f Control)
Parameter b8-04 is used to fine tune the Energy Saving control. The default setting depends on the capacity of the drive.
The value can be optimized in small amounts while viewing the output power monitor (U1-08) and running the drive.
A smaller value results in less output voltage and less energy consumption, but a too small value will cause the motor to
stall.
Note: This default value changes if the motor rated capacity set to E2-11 is changed. The Energy Saving coefficient is set automatically
when Auto-Tuning for Energy Saving is performed (
Refer to T: Motor Tuning on page 229 ).
■
b8-05: Power Detection Filter Time (V/f Control only)
The Energy Saving function continuously searches out the lowest output voltage in order to achieve minimum output
power. Parameter b8-05 determines how often the output power is measured and the output voltage is adjusted.
No. Parameter Name Setting Range Default
b8-01 Energy Saving Control Selection 0 or 1 0
No. Name Setting Range Default
b8-02 Energy Saving Gain 0.00 to 10.0 0.7 s
No. Name Setting Range Default
b8-03 Energy Saving Control Filter Time Constant 0.00 to 10.00 s 0.50 s
No. Name Setting Range Default
b8-04 Energy Saving Coefficient Value 0.00 to 655.00
Determined by
C6-01, E2-11, and
o2-04
No. Name Setting Range Default
b8-05 Power Detection Filter Time 0 to 2000 ms 20 ms