5.4 Details of Function Codes
5-108
Related function codes
Table 5.4-42
Function
Code
Name V/f control Remarks
F40
Torque limiter 1-1
Y
F41
Torque limiter 1-2
Y
E16
Torque limiter 2-1
Y
E17
Torque limiter 2-2
Y
H73
Torque Limiter (Operating conditions)
Y
H74
Torque Limiter (Control target)
N
H75
Torque Limiter (Target quadrants)
N
H76
Torque Limiter (Frequency increment limit for braking)
Y
E61 to E63
Terminal [12] Extended Function
Terminal [C1] Extended Function
Terminal [V2] Extended Function
Y
7: Analog torque limit value A
8: Analog torque limit value B
Torque limit control mode
Torque limit 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.
Figure 5.4-39
Torque limiters (F40, F41, E16 and E17) Data setting range: -300 to 300 (%), 999 (Disable)
These function codes specify the operation level at which the torque limiters become activated, as the
percentage of the motor rated torque.
Table 5.4-43
Function Code Name Torque limit feature
F40
Torque limiter 1-1 Driving torque current limiter 1
F41
Torque limiter 1-2 Braking torque current limiter 1
E16
Torque limiter 2-1 Driving torque current limiter 2
E17
Torque limiter 2-2 Braking torque current limiter 2
Although the data setting range for F40, F41, E16, and E17 is from positive to negative values
(-300% to +300%), specify positive values in practice. Specifying a negative value causes the
inverter to interpret it as an absolute value.
The torque limiter determined depending on the overload current actually limits the torque current
output. Therefore, the torque current output is automatically limited at a value lower than 300%, the
maximum setting value.
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