Fuji Electric frenic mini series, User Manual

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9.2 Details of Function Codes
9-53
Chap. 9
FUNCTI
ON C
O
DE
S
H50 Arbitrary Point on Non-linear V/f Pattern (Frequency)
Refer to F04.
H51 Arbitrary Point on Non-linear V/f Pattern (Voltage)
Refer to F04.
For details of setting the non-linear V/f pattern, refer to the descriptions of function code
F04.
H54 Acceleration/Deceleration Time (Jogging operation)
Sets both the acceleration and deceleration time for jogging operations.
- Data setting range: 0.00 to 3600 (sec.)
Refer to function codes E01 to E03 “Terminal assignment of [X1] to [X3] for details
on jogging operations.
H64 Bottom Limiter (Bottom frequency for output control)
When the output current limiter and/or overload-suppressing feature is activated, this
function limits the bottom of the frequency that may vary due to reaction of the limit
control.
- Data setting range: 0.0 to 60.0 (Hz)
H69 Automatic Deceleration (Regenerative Energy Suppressing)
Data Function
0 Disable
Enables regenerative energy suppressing control.
1
Enable
The moment that a regenerative energy exceeding the capacity of the inverter is returned
when braking is being applied to the motor, the inverter will shut its output down and enter
overvoltage alarm mode. If regenerative energy suppressing control is enabled, the inverter
lengthens the deceleration time to 3 times that of the set time while the DC link voltage
exceeds the preset voltage suppressing level, and decreases the deceleration torque to 1/3. In
this way, the inverter makes the motor reduce the regenerative energy tentatively.
This control is used to suppress torque generated by the motor in deceleration. Conversely,
when the load on the motor results in a braking effect, the control does not have any effect,
so do not use it in this case. In addition, note that setting an extremely short deceleration
time may cause an overvoltage alarm failure of the inverter even if the time is multiplied by
3 – keep this in mind when setting deceleration time.
Disable this function when the inverter features a braking resistor. If it is enabled, the
braking resistor and regenerative energy suppressing control may conflict with each other,
which may change the deceleration time unexpectedly.