104
Chapter 6 ,P9 Failure and protection
P9-02
Motor overload warning
coefficient
50%
～
100%
Default
：
80%
This function is used to output an early warning signal to the control system before
motor overload fault protection. This early warning coefficient is used to determine how
much early warning is given before motor overload protection. The larger the value, the
smaller the early warning amount. When the cumulative output current of the inverter is
greater than the inverse of the overload inverse time curve and P9-02, the inverter outputs
the “motor overload pre-alarm” ON signal.
P9-07
Power-on short circuit
protection option
0
：
Invalid 1: Valid
Default
：
1
The inverter can be selected to detect whether the motor is shorted to ground when it is
powered on.
If this function is enabled, the UVW terminal of the inverter will have a voltage output for
a period of time after power-on.
P9-08
Brake unit action starting
voltage
200.0~2000.0V
Default
：
depend
The starting voltage Vbreak of the built-in braking unit action, the setting of this voltage
value is as follows:
800 ≥ Vbreak ≥ (1.414Vs+30)
Vs- Input AC power supply voltage of the inverter Note: Improper setting of this voltage
may cause the built-in brake unit to operate abnormally!
P9-09
Number
of
automatic
resets
0
～
20
Default
：
0
When the inverter selects fault automatic reset, the number of automatic resets can be
set. After the number of times, the inverter outputs a fault status.
P9-10
Fault
output
action
selection
during
automatic fault reset
0
：
No action
1: action
Default
：
0
When the fault automatic reset function is set in the inverter, the fault output is
activated during the automatic fault reset.
P9-11
Fault auto reset interval
0.1s
～
100.0s
Default
：
1.0s
The waiting time from the inverter fault alarm to the automatic fault rese
The waiting time from the inverter fault alarm to the automatic fault reset.
P9-12
Input
phase
loss
protection option
0
：
Prohibited 1: allowed
Default
：
1
Choose whether to protect the input phase loss.
The inverter has the input phase loss protection function from the 18.5kW G type
machine and above. The power of the 18.5kW P type machine has no input phase loss
protection function regardless of whether P9-12 is set to 0 or1
