Powtran PI9100 Series Manual page 147

Chapter 5 Function parameter
voltage
In the process of the inverter deceleration, when the DC bus voltage exceeds the
overvoltage stall protection voltage/the energy consumption brake voltage, the inverter
stops deceleration and maintains at the current operating frequency(if F3.12 is not set to 0,
the braking signal is outputted the energy consumption brake can be implemented by an
external braking resistor.) and then continues to decelerate upon decline of the bus voltage
Overvoltage stall gain is used for adjusting inhibition overvoltage capability during
deceleration. The greater this value, the stronger inhibition overvoltage capability under
the premise that the overvoltage does not occur, the best is the smaller gain setting.
For the small inertia load, the overvoltage stall gain should be small, otherwise which
cause the slower system dynamic response. For the big inertia load, the overvoltage stall
gain should be large, otherwise the poor inhibitory effect may cause overvoltage fault.
When the overvoltage stall gain is set to 0, the overvoltage stall function will be
canceled.
Input phase
F8.07
loss
protection
The input phase loss protection function is only for PI9000 G type inverter with
18.5kW or above, not for the F type inverter with 18.5kW or below and however F8.07 is
set to 0 or 1.
Output
phase
F8.08
protection
selection
Select whether the output phase loss protection is done or not.
Power-on
F8.09
short circuit
to ground
You can detect whether the motor is shorted to ground when the inverter is powered
on.
If this function is active, the inverter's UVW terminal will output voltage after power-
on for a while.
Number
F8.10
automatic
fault reset
When the inverter selects automatic fault reset, it is used to set the number of times
of automatic fault reset. If the set number of times is exceeded, the inverter remains a
failed state.
When set F8.10 (number of automatic fault reset) ≥ 1, inverter will run
automatically when repower after instantaneous power-off.
Input phase loss protection
Units
digit
Prohibit
Allow
Tens
digit
Prohibit
Allow
Prohibit
loss
Allow
Invalid
Valid
of
0 to 32767
selection
Contactor actuation
protection
142
0
1
11
0
1
0
1
1
0
1
1
0
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