Chapter 5 Function parameter
90
Ch
ap
ter 5
Diagram 5-20:
Schematic diagram of switching between acceleration and deceleration
If the operating frequency is less than F7.14, select acceleration time 2; otherwise select
acceleration time 1.
For the above figure in the process of deceleration, if the operating frequency is more than
F7.15, select deceleration time 1; otherwise select deceleration time 2.
F7.16 Forward/reverse rotation deadband
0.00s~3600.0s
0.0s
☆
It is the waiting time that the inverter reaches zero speed when the parameter is used to switch
between forward and reverse rotation.
Output frequency
Hz
Time(
t)
Forward
Deadband
Reverse
Diagram 5-21:
Schematic diagram of the deadband of forwad and reverse
F7.17 Reverse rotation control
Allow
0
0
☆
Prohibit
1
For certain production equipments, the reverse rotation may result in damage to the
equipment, the function can disable the reverse rotation. The factory default allows reverse
rotation.
F7.18
Set frequency lower than
lower limit frequency mode
Running at lower limit frequency
0
0
☆
Stop
1
Zero speed running
2
When the set frequency is lower than the lower limit frequency, the inverter operating
status can be selected through the parameter.
JI500
provides three modes of operation to meet
the needs of a variety of applications.
F7.19 Droop control
0.00Hz~10.00Hz
0.00Hz
☆
This function is generally used for the load distribution that multiple motors drag the same
one load.
The droop control means that the inverter output frequency is decreased as the load is
increased, so that when multiple motors drag(work for)the same one load, each motor's output
frequency much drops, which can reduce the load of the motor to balance evenly multiple motors'
load .
This parameter means the decreased value of output frequency when the inverter outputs the
rated load.
F7.20 Setting cumulative power-on arrival time
0h~36000h
0h
☆
When the total power-on time(F6.08) reaches the time set by F7.20, the inverter multifunction
digital DO outputs ON signal.
F7.21 Setting cumulative running arrival time
0h~36000h
0h
☆
Used to set the running time of inverter.
When the total power-on time(F6.07) reaches the set timeF7.21, the inverter multifunction
digital DO outputs ON signal.
F7.22 Start protection
OFF
0
0
☆
ON
1
This parameter relates to the security features of the inverter
If this parameter is set to 1 , and if the running command is active (e.g. the terminal running
command is closed before power-on) when the inverter is in power-on, the inverter will not
respond to the running command, you must firstly cancel the running command, when the running
