5.3 Description of Function Codes 5.3.1 F codes (Fundamental functions)
Torque limiter 1-1/Torque limiter 1-2
Related function codes: E16, E17 Torque limiter 2-1, 2-2
H73 Torque limiter (Operating conditions selection)
H74 Torque limiter (Control target)
H75 Torque limiter (Applicable quadrant)
H76 Torque limiter (Braking) (Frequency rising limit
for braking)
Under V/f control (F42 = 0, 1, 2, 3, 4)
If the inverter output torque exceeds the specified levels of the torque limiters, the inverter controls the output
frequency and limits the output torque for preventing a stall.
In braking, the inverter increases the output frequency to limit the output torque. Depending on the
conditions during operation, the output frequency could dangerously increase. H76 (Frequency rising limit
for braking) is provided to limit the increasing frequency component.
Table Related function codes
Torque limiter (0perating conditions
selection)
Torque limiter (Control target)
Torque limit (Applicable quadrant)
Torque limiter (frequency rising limit for
braking)
Terminal [12], [V2], [C1] (C1 function) (V3
function) Extension function selection
7: Analog torque limiter A
8: Analog torque limiter B
Torque limit control mode
Under V/f control, torque limiting is performed by limiting torque current flowing across the motor.
The graph below shows the relationship between the torque and the output frequency at the constant torque current
limit.
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