Power Failure Restart Action Selection; Zero Speed Torque Frequency Threshold - Veichi AC300 Series Technical Manual

AC300 Series Vector Control Inverter Manual
running process. When the speed is reduced, it will output zero frequency after [F01.29], enter the zero-speed
torque function, and exit zero after zero speed torque holding time. Speed torque function.
4. During the inverter deceleration process, when the output frequency is less than the zero speed torque
frequency threshold [F01.29], the zero speed torque function will not be entered, and the normal deceleration
will be stopped. If the stop DC braking start frequency is greater than [F01.29], when the output frequency is
less than the stop DC braking start frequency, the stop DC braking state is entered.
5. When the zero speed torque frequency threshold value exceeds the starting frequency [F01.02], the
internal zero speed torque frequency threshold is limited to the starting frequency.
Output
frequency
Zero speed
torque
frequency
threshold
0
Starting
frequency
Forward run
ON
command
Reverse run
command

Zero speed torque frequency threshold

Note:
1. If the zero speed holding torque is set too large or the zero speed holding torque time is set too long,
pay attention to the temperature rise of the motor. If the motor temperature rises a lot, it is necessary to
improve the heat dissipation of the motor plus the heat sink of the motor.
F01.32-F01.34 Reserved
F01.35 Power off restart action selection
F01.36 Power off restart waiting time

Power failure restart action selection:

0: Invalid After the inverter is powered off and then powered on, it must be run after receiving the running command.
1: Valid If the inverter is in the running state before the power is cut off, after the power is restored, the inverter will
start the automatic speed tracking after the waiting time set by [F01.36].
Stop restart wait time: This function is defined as the transition time that the inverter waits and restarts at 0.0 Hz.
The power failure restart wait time [F01.36] setting principle is based on factors such as the recovery recovery time
of other equipment related to the inverter after power supply is restored.
Function Parameter Specifications
Positive reversal dead time
Zero speed torque
time
frequency threshold
Zero speed torque holding
OFF
time
ON OFF
Setting range: 0～1 Default: 0
Setting range: 0.00～60.00s Default: 0.50s
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AC300 Series Vector Control Inverter Manual
During the waiting time of power failure restart, the inverter does not accept the running command, but if the stop
command is input during this period, the inverter will cancel the restart state.
Notes:
1. The power failure restart function can automatically start the inverter after power is restored. Therefore,
it has great contingency, please use it carefully for the safety of people and equipment.
2. Use the power failure restart function to ensure that the inverter runs valid signal before power off.
When the keyboard operation control, RS485 communication control or optional card operation, if the
inverter has power failure, the running command will be automatically cleared.
3. When the running command uses the terminal two-wire control, if the running terminal has no input
after power-on, the inverter will not run.
F01.37 Reserved
F01.38 JOG running frequency setting Setting range:
F01.39 JOG ACC time Setting range: 0.01～650.00s
F01.40 JOG DEC time Setting range: 0.01～650.00s
Jog running frequency setting: Set the output frequency of the inverter when jogging.
Jog acceleration time: The jog acceleration/deceleration time defines the same acceleration/deceleration time:
When the parameter [F01.16] LED "0" digitis set to "0", it refers to the time required for the output frequency to
accelerate from 0.00Hz to the maximum frequency;
When the parameter [F01.16] LED "0" digit is set to "1", it refers to the time required for the output frequency to
accelerate from 0.00Hz to 50.00Hz;
When the parameter [F01.16] LED "0" digit is set to "1", it refers to the time required for the output frequency to
accelerate from 0.00Hz to the set frequency;
See parameter [F01.16] for details.
Jog deceleration time: Jog acceleration/deceleration time defines the same acceleration/deceleration time.
When the parameter [F01.16] LED "0" digit is set to "0", it refers to the time required for the output frequency to
decelerate from the maximum frequency to 0.00Hz;
When the parameter [F01.16] LED "0" digit is set to "1", it refers to the time required for the output frequency to
decelerate from 50.00 Hz to 0.00 Hz;
When the parameter [F01.16] LED "0" digit is set to "2", it refers to the time required for the output frequency to
decelerate from the set frequency to 0.00Hz;
See parameter [F01.16] for details.
Note:
1. The inverter can be controlled by the jog operation command of the keyboard, control terminal,
communication command or optional card.
Function Parameter Specifications
0.00～Maximum frequency Default: 5.00Hz
Default: 10.00s
Default: 10.00s
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