• To use automatic torque boost, set “1: Constant torque load” to V/f Characteristics Selection
(3004Hex-26Hex/3009Hex-0EHex). When “0: Variable torque load” is set, manual torque boost is
selected regardless of the setting of T
orque Boost Function Selection (301FHex-0DHex/
301FHex-0EHex).
• Automatic torque boost controls to match the motor characteristics. To use the automatic torque
boost function effectively, either set Base Frequency (3004Hex-05Hex/3009Hex-03Hex), Rated Volt-
age at Base Frequency (3004Hex-06Hex/3009Hex-04Hex), and motor parameters
(3007Hex-02Hex/3009Hex-10Hex to 3007Hex-04Hex/3009Hex-12Hex and 3007Hex-07Hex/
3009Hex-15Hex to 3007Hex-15Hex/3009Hex-23Hex) to match the motor capacity or motor charac-
teristics, or execute auto-tuning.
Manual Torque Boost Voltage (301FHex-0DHex/301FHex-0EHex = 0)
• With the torque boost by Manual Torque Boost Voltage (3004Hex-0AHex/3009Hex-06Hex), a con-
stant voltage is added to the V/f characteristics before output regardless of the load. The optimum
voltage suited to the motor and load are manually adjusted by the Manual Torque Boost V
oltage
(3004Hex-0AHex/3009Hex-06Hex) to ensure starting torque. Adjust the voltage to a level at which
startup is possible and overexcitation does not occur in a no-load state or light load state.
• When the non-linear V/f function is used in combination with the manual torque boost function, the
torque boost is enabled at the lowest non-linear V/f frequency or less.
301FHex-
43Hex
301FHex-
45Hex
301FHex-
47Hex
3004Hex-
05Hex
3004Hex-
04Hex
Outpu
t v
o
l
tag
e
Outpu
t frequency
3004H
e
x
-0
7
H
e
x
3004H
e
x
-0
6H
e
x
3004H
e
x
-0
AHex
301FHex-48Hex
301FHex-46Hex
301FHex-44Hex
• When Manual Torque Boost Voltage (3004Hex-0AHex/3009Hex-06Hex) is set to 0.0%, manual tor-
que boost is disabled.
6 Basic Settings
6-66
M1 Series EtherCAT Type User’s Manual (I670)
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