5.4 Details of Function Codes
5-165
Details of
Function Codes
F codes
E61 to E65
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
Chapter 5 Function Code
Low torque detected U-TL
This output signal comes on when the torque value calculated by the inverter or torque command value
drops to equal to or below the level set for the low torque detect (operation level), and when the condition
continues for the set period of low torque detect (timer). The signal turns off when the calculated torque
increases to equal to or higher than 5% of the set level + motor rated torque. The minimum output signal
range: 100 ms.)
Fig. 5.4-75
Under low frequency operation, the error in torque calculation becomes large. Therefore, no low torque can
be detected within the operation range at lower than 20% of the base frequency (F04). (In this case, the
result of recognition before entering this operation range is retained.) The low torque detect goes off when
the inverter operation is at stop.
Since the motor constants are used in the torque calculation, it is recommended that auto-tuning be applied
by function code P04 to achieve higher accuracy.
E98, E99
Terminal [FWD] (Function Select), Terminal [REV] (Function Select) (See E01 to E09)
For settings of terminals [FWD] and [REV], see the description of function codes E01 to E09.
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