Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 189)

No. Parameter Name Setting Range Default
d4-10 Up/Down Frequency Reference Limit Selection 0, 1 0
Setting 0: Lower Limit is Determined by d2-02 or Analog Input
The higher value between d2-02 and an analog input programmed for Frequency bias (A1, A2, A3) determines the lower
frequency reference limit.
Note: When using the External Reference 1/2 (H1-oo = 2) to switch between the Up/Down function and an analog input as the reference source,
the analog value becomes the lower reference limit when the Up/Down command is active. Set d4-10 to 1 to make the Up/Down function
independent of the analog input value.
Setting 1: Lower Limit is Determined by d2-02
Only parameter d2-02 sets the lower frequency reference limit.
u d6: Field Weakening and Field Forcing
Field Weakening
The Field Weakening function reduces the output voltage to a predefined level to reduce the energy consumption of the motor.
To activate the Field Weakening function, use a digital input programmed for H1-oo = 63. Only use Field Weakening with
a known and unchanging light load condition. Use the Energy Saving function (b8-oo parameters) when Energy Saving for
various different load conditions is required.
n d6-01: Field Weakening Level
Sets the level to which the output voltage is reduced when Field Weakening is activated. Set as percentage of the maximum
output voltage.
No. Parameter Name Setting Range Default
d6-01 Field Weakening Level 0 to 100% 80%
n d6-02: Field Weakening Frequency Limit
Sets the minimum output frequency at which field weakening can be activated. Field Weakening cannot be activated for
frequencies below d6-02.
No. Parameter Name Setting Range Default
d6-02 Field Weakening Frequency Limit 0 to 400.0 Hz 0.0 Hz
5.4 d: Reference Settings
YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual 189
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Parameter Details