5.4 Details of Function Codes
5-200
Overload prevention control OLP (Function code E20 to E24, E27 data = 36)
This output signal comes on when overload prevention control
OLP is activated and the output frequency
changed.
Even when the output frequency decreases, the effect cannot be expected with the equipment,
where the load does not decrease. Do not use this function.
H71
Deceleration Characteristics
Set this function when validating the forced brake control.
If regenerative energy produced during the deceleration of the motor and returned to the inverter exceeds
the inverter’s braking capability, an overvoltage trip will occur. The forced brake control increases the motor
energy loss during deceleration, and increases the deceleration torque.
Table 5.4-135
Data for H71 Function
0
Disable
1
Enable
This function is aimed at controlling the torque during deceleration; it has no effect if there is a
braking load. When anti-regenerative control (H69 = 2, 4) of the torque limit method is effective, the
deceleration characteristics become invalid.
H72
Main Power Down Detection (Operation Selection)
H72 monitors the inverter alternate-current input power source, and disables the inverter operation if it is not
established.
Table 5.4-136
Data for H72 Function
0
Main power down not detected
1
Main power down detected
In cases where the power is supplied via a PWM converter or the inverter is connected via the DC link bus,
there is no alternate-current input. Therefore, setting the data for H72 to "1" disables the inverter operation.
In such cases, change H72 to "0."
If case of single-phase power supply, contact your Fuji Electric representative.
H73 to
H75
Torque Limit (Operating Conditions Selection, Control Object, Objective Target
Quadrants) (See F40)
For details about the operating conditions, see the description of function code F40.
H76
Torque Limit (Brake) (Increasing Frequency Limiter) (See H69)
For setting of torque limit (braking) (increasing frequency limiter), see the description of H69.
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