gefran VDI100 Series Instruction Manual page 228

Sets the voltage upper limit during automatic energy saving. 100% corresponds to 230V or 460V depending on
the inverter class used. Refer to the figure 4.4.89.
11-22: Adjustment time of automatic energy saving
Sets sample time constant for measuring output power.
Reduce the value of 11-22 to increase response when the load changes.
Notes:: If the value of 11-22 is too low and the load is reduced the motor may become unstable.
11-23: Detection level of automatic energy saving
Sets the automatic energy saving output power detection level.
11-24: Coefficient of automatic energy saving
The coefficient is used to tune the automatic energy saving. Adjust the coefficient while running the inverter on
light load while monitoring the output power. A lower setting means lower output voltage.
Notes:
- If the coefficient is set to low the motor may stall.
- Coefficient default value is based on the inverter rating. Set parameter 13-00. If the motor power does not match
the inverter rating.
Code Parameter Name / Range
11-29 Auto De-rating Selection
0: Disable
1: Enable
The automatic de-rating function automatically reduces the output frequency by 30% of the nominal motor
speed when the inverter detects an overheat condition (heatsink).
Automatic de-rating function depends on the automatic carried frequency reduction selection (11-03).
If automatic carrier frequency reduction is disabled (11-03=0), the output frequency is reduced by 30% of the
nominal motor speed when an overheat condition is detected.
If automatic carrier frequency reduction is enabled (11-03=1), the output frequency is reduced by 30% of the
nominal motor speed when the carrier frequency is at its minimum setting.
11-29=0: Auto de-rating selection disabled, carrier frequency is based on 11-01 or 11-03.
11-29=1: Auto de-rating selection is enabled.
Code Parameter Name / Range
11-30 Variable Carrier Frequency Max. Limit
2~16 kHz
11-31 Variable Carrier Frequency Min. Limit
1~16 kHz
11-32 Variable Carrier Frequency Proportional Gain
00~99
Carrier frequency method depends on the selected control mode.
228
Figure 4.4.89 Voltage limit value of commissioning operation
Voltage Limit
11-21
11-21
Output
Voltage
VDI100 • Instruction manual