Fuji Electric FRENIC-HVAC User Manual page 389

Switching torque limiters

The torque limiters can be switched by the function code setting and the terminal command
TL2/TL1 ("Select torque limiter level 2/1") assigned to any of the digital input terminals.
To assign the TL2/TL1 as the terminal function, set any of E01 through E07 to "14." If no
TL2/TL1 is assigned, torque limiter level 1 (F40 and F41) take effect by default.
Torque limiter for braking (Frequency increment limit) (H76)

H76 specifies the increment limit of the frequency in limiting torque for braking. The factory
default is 5.0 Hz. If the increasing frequency during braking reaches the limit value, the
torque limiters no longer function, resulting in an overvoltage trip. Such a problem may be
avoided by increasing the setting value of H76.
The torque limiter and current limiter are very similar in function. If both are
activated concurrently, they may conflict with each other and cause hunting
(undesirable oscillation of the system). Avoid concurrent activation of these
limiters.
6.3 Details of Function Codes
Data setting range: 0.0 to 120.0 (Hz)
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