Fuji Electric Frenic Mega Series User Manual page 338

2: Upper/lower Torque limiter A applies to the upper limit, and torque limiter B to the lower limit.
limits Depending upon the polarity of torque limiters A and B, the following patterns are
available.
Pattern 1
Pattern 2
Pattern 3
Second quadrant:
Reverse braking
Third quadrant:
Reverse driving
Second quadrant:
Reverse braking
Third quadrant:
Reverse driving
• If the value of torque limiter A is less than that of torque limiter B, torque
limiter A applies to both the upper and lower limits.
• Selecting the "Upper/lower torque limits" may cause reciprocating oscillation
between the upper and lower limit values, depending upon a small difference
between the upper and lower limits, a slow response from the speed control
sequence, and other conditions.
Torque limiters 1-1, 1-2, 2-1 and 2-2 (F40, F41, E16 and E17)
These function codes specify the operation level at which the torque limiters become activated, as
the percentage of the motor rated torque.
Function code
F40
F41
E16
E17
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 except when the
"Upper/lower torque limits" (H75 = 2) is selected. 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.
Torque limiter A Torque limiter B
Positive
Positive
Negative
First quadrant:
Forward driving
Torque limiter A
Torque limiter B
Fourth quadrant:
Forward braking
Pattern 1
First quadrant:
Forward driving
Torque limiter A
Torque limiter B
Fourth quadrant:
Forward braking
Pattern 3
Data setting range: -300 to 300 (%), 999 (Disable)
Name
Torque limiter 1-1
Torque limiter 1-2
Torque limiter 2-1
Torque limiter 2-2
5-106
Positive
Negative
Negative
Second quadrant:
Reverse braking
Third quadrant:
Reverse driving
Pattern 2
First quadrant:
Forward driving
Torque limiter A
Torque limiter B
Fourth quadrant:
Forward braking