User Manual
128
User Manual
129
If the current running time reaches the value set in this parameter, the
corresponding output becomes ON, indicating that the current running time is
reached.
P8-54
Output power
correction coefficient
0.00% 〜 200.0%
Default:100.0%
When the output power (U0-05) is not equal to the required value, you can
perform linear correction on output power by using this parameter.
P9: Failure and protection
P9-00
Motor overload
protection option
0：Prohibited
1: allowed
Default：1
P9-01
Motor overload
protection gain
0.20〜10.00
Default：1.00
0: The motor overload protective function is disabled. The motor is exposed
to potential damage due to overheating. A thermal relay is suggested to be
installed between the inverter and the motor.
1 : At this time, the inverter judges whether the motor is overloaded according
to the inverse time curve of the motor overload protection. The shortest
time to report motor overload is 2 minutes. If you need to adjust the motor
overload current and time, please set P9-01.
(Be careful to confirm whether the rated current of the motor is correct
before setting.) Reduce the value of P9-01 to make the motor protection
advance. The user needs to correctly set the value of P9-01 according to the
actual overload capacity of the motor. The motor is overheated and the
inverter is not alarming!
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.
P9-03
Overvoltage stall gain 0 (no stall overvoltage) -100
Default：30
P9-04
Overvoltage stall
protective voltage
120%–150%
Default：760V
When the DC bus voltage exceeds the value of P9-04 (Overvoltage stall
protective voltage) during deceleration of the inverter, the inverter stops
deceleration and keeps the present running frequency. After the bus voltage
declines, the inverter continues to decelerate. P9-03 (Overvoltage stall gain)
is used to adjust the overvoltage suppression capacity of the inverter. The
larger the value is, the greater the overvoltage suppression capacity will be.
In the prerequisite of no overvoltage occurrence, set P9-03 to a small
value. For small-inertia load, the value should be small. Otherwise, the
system dynamic response will be slow. For large-inertia load, the value
should be large. Otherwise, the suppression result will be poor and an
overvoltage fault may occur.
If the overvoltage stall gain is set to 0, the overvoltage stall function is
disabled. The overvoltage stall protective voltage setting 100% corresponds
to the base values in the following table:
Voltage Class Corresponding Base Value
Single-phase 220 V
290 Vd
Three-phase 380 V
530 V
Three-phase 480 V
620 V
Overcurrent stall gain
0–100
Default：20
Overcurrent stall
protective current
100%–200%
Default：150%
P9-05
P9-06
When the output current exceeds the overcurrent stall protective current
during acceleration/deceleration of the inverter, the inverter stops
acceleration/deceleration and keeps the present running frequency. After the
output current declines, the inverter continues to accelerate/decelerate. P9-
05 (Overcurrent stall gain) is used to adjust the overcurrent suppression
capacity of the inverter. The larger the value is, the greater the overcurrent
suppression capacity will be. In the prerequisite of no overcurrent
occurrence, set P9-05 to a small value.
For small-inertia load, the value should be small. Otherwise, the system
dynamic response will be slow. For large-inertia load, the value should be
large. Otherwise, the suppression result will be poor and overcurrent fault
may occur. If the overcurrent stall gain is set to 0, the overcurrent stall
function is disabled.
Chapter 6 Chapter 6
To Next Page
Loading...
Need help?
General
