Chapter 6 Function Introduction Shenzhen Hpmont Technology Co., Ltd
―116― HD30 Series Inverters User Manual
6.2.21 Group F20 Protection of Fault Parameters
Overload fault (F20.00
F20.02)
No. Name Description Range
factory setting
F20.00 Overload pre-alarm detection 00000
11111
00000
Units: Overload pre-alarm detection
• 0: It is active all the time in running status.
• 1: It is active only at constant speed.
Tens: Action selection for overload pre-alarm
• 0: The inverter doesn’t alarm and continues operation when detecting an active overload signal.
• 1: The inverter alarms and stops operation when detecting an active overload signal.
Hundreds: Overload threshold selection
• 0: Ratio of load current to the motor’s rated current (alarm: motor overload “E0019”).
• 1: Ratio of load current to the inverter’s rated current (alarm: inverter overload “E0017”).
Thousands: Motor type selection
• 0: Standard motor. As the cooling effect of the standard motor deteriorates at low speed, the
inverter will automatically make regulation to the motor overload protection time.
• 1: Variable frequency. The cooling effect of the variable frequency motor is not affected by the
motor’s speed due to its forced cooling potential, the inverter will not automatically make
regulation to the motor overload protection time, as efficient motor cooling by an external motor
fan is assumed.
Ten thousands: Overload protection
• 0: Overload protection is enabled.
• 1: Overload protection is disabled.
F20.01 Overload pre-alarm detection threshold 20.0
200.0
150.0%
F20.01 defines the current threshold for overload pre-alarm protection. The setting range is a
percentage value of the motor’s or the inverter’s rated current
F20.02 Overload pre-alarm detection time 0.0
60.0
5.0s
F20.02 defines the time during which the inverter output current exceeds overload pre-alarm detection
threshold (F20.01). If the status remains after overload pre-alarm detection time (F20.02), the inverter
will output pre-alarm signal.
Inverter output load-loss detection fault (F20.03
F20.05)
No. Name Description Range
factory setting
F20.03 Inverter output load-loss detection 0
4
0
0: Disabled. It does not detect inverter output load-loss.
1: It is detecting all the time in running process, and then continues operation after detecting (alarm).
2: It detectes only at the same speed, and then continues operation after detecting (alarm).
3: It is detecting all the time in running process, and then cut off the output after detecting (fault).
4: It is detectes only at the same speed, and then cut off the output after detecting (fault).
F20.04 Inverter output load-loss detection threshold 0
100
30%
F20.04 defines the current threshold of load-loss. It is a percentage of the inverter’s rated current.
F20.05 Inverter output load-loss detection time 0.00
20.00
1.00s
If the inverter’s output current is smaller than the load-loss detection threshold (F20.04) beyond the
time defined by load-loss detection time (F20.05), the inverter will alarm inverter load-loss fault
(E0018).
• When F20.04 or F20.05 is set to 0, the inverter will not detect load loss fault.
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