D6: Field Weakening; D7: Offset Frequency - YASKAWA HV600 Manual

Remove the Saved Frequency Reference Value
The procedure to remove the saved frequency reference value is different for different functions. Use these methods
to remove the value:
• Release the input programmed for Accel/Decel Ramp Hold [H1-xx = A].
• Set an Up or Down command while no Run command is active.
■
d4-10: Up/Down Freq Lower Limit Select
No.
Name
(Hex.)
d4-10 Up/Down Freq Lower Limit
Select
(02B6)
0 : Greater of d2-02 or Analog
The higher value between d2-02 [Frequency Reference Lower Limit] and an analog input programmed for Frequency
Reference [H3-02, H3-10 = 0] sets the lower frequency reference limit.
Note:
When you use External Reference 1/2 Selection [H1-xx = 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 = 1 to isolate the Up/Down
function and the analog input value.
1 : d2-02
You can only use d2-02 to set the lower limit of the frequency reference.
◆

d6: Field Weakening

d6 parameters set the field weakening function.
The field weakening function decreases the energy consumption of the motor. It decreases the output voltage of the
drive to a set level. The function decreases the motor excitation current inversely proportional to speed in a constant
output range, and does not let the induced voltage of the motor become more than the power supply voltage. To
enable this function, set Field Weakening [H1-xx = 63] ON.
Note:
Use the Field Weakening function in constant light-load applications. To control the energy consumption of the motor for other load
conditions, use the b8 parameters [Energy Saving].
■
d6-01: Field Weakening Level
No.
Name
(Hex.)
d6-01 Field Weakening Level
(02A0)
■
d6-02: Field Weakening Frequency Limit
No.
Name
(Hex.)
d6-02 Field Weakening Frequency
Limit
(02A1)
To enable the Field Weakening command, make sure that these two conditions are true:
• The output frequency ≥ d6-02.
• There is a speed agreement status.
◆

d7: Offset Frequency

The drive will use 3 digital signal inputs, to add or subtract the set frequency (Offset frequency) to/from the frequency
reference and correct the speed. The drive uses the terminal set in H1-xx = 44 to 46 [MFDI Function Select = Add
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
V/f OLV/PM EZOLV OLV/PM
Sets the lower frequency limit for the Up/Down function.
V/f OLV/PM EZOLV OLV/PM
Sets the drive output voltage as a percentage of E1-05 [Maximum Output Voltage] when H1-xx = 63
[Field Weakening] is activated.
V/f OLV/PM EZOLV OLV/PM
Sets the minimum output frequency to start field weakening.
Description
Description
Description
2.5 d: References
Default
(Range)
0
(0, 1)
Default
(Range)
80%
(0 - 100%)
Default
(Range)
0.0 Hz
(0.0 - 400.0 Hz)
2
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