Veichi JT550 Series Manual page 92

Chapter 7 Maintenance and Troubleshooting
F4.12 Forward/Reverse rotation dead-zone time
It is used to set the time when the output is 0 Hz at transition of the inverter forward rotation and
reverse rotation, as shown in the following Figure .
F4.13 Reverse control
0: Enabled
1: Disabled
It is used to set whether the inverter allows reverse rotation. In the applications where reverse rotation
is prohibited, set this parameter to 1.
Running mode when set frequency
F4.14
lower than frequency lower limit
It is used to set the inverter running mode when the set frequency is lower than the frequency lower
limit. The JT550 provides three running modes to satisfy requirements of various applications
0: Run at frequency lower limit
1: Stop
2: Run at zero speed
F4.15 Droop control
The function is typically used for load sharing with multiple motors drag a load. Droop control refers
to as the load increases, the inverter output frequency decreases, so more than one motor drive the same load,
the load of the motor output frequency drops more, which can reduce the load on the motor to achieve
multiple motors load evenly.This parameter refers to the inverter rated output load, the output frequency
decreases value.
Accumulative power-on time
F4.16
threshold
If the accumulative power-on time (F8.13) reaches the value set in this parameter, the corresponding
DO terminal becomes ON.
Accumulative running time
F4.17
threshold
It is used to set the accumulative running time threshold of the inverter. If the accumulative running
time (F8.13) reaches the value set in this parameter, the corresponding digital output terminal becomes ON.
F4.18 Startup protection
This parameter is used to set whether to enable the safety protection. If it is set to 1, the inverter does
not respond to the run command valid upon inverter power-on (for example, an input terminal is ON before
power-on). The inverter responds only after the run command is canceled and becomes valid again.In
addition, the inverter does not respond to the run command valid upon fault reset of the inverter. The run
protection can be disabled only after the run command is canceled.
In this way, the motor can be protected from responding to run commands upon power-on or fault reset
in unexpected conditions.
Range:0.0s~3000.0s
Range:0~1
Range:0~2
Range:0.00Hz~10.00Hz
Range:0s~65000h
Range:0s~65000h
Range:0~1
- 92 -
JT550 Series Inverter Manual
Default:0.0s
Default:0
Default:0
Default:0.00Hz
Default:0h
Default:0h
Default:0