YASKAWA V1000 Series Technical Manual page 204

5.9 n: Special Adjustments
No. Name
Voltage Error
n8-54 Compensation Ttime
Constant
n8-55: Load Inertia (PM OLV)
n
Adjust appropriately for the inertia of the connected machinery. If this value is set too low, the motor may not start very smoothly, and a STo fault (Pull-
Out Detection 2) might occur. Try adjusting this parameter from the beginning.
0: The inertia ratio between the motor and the load just less than 1:10. There is a sizable current ripple.
1: The inertia ratio between the motor and the load is 1:10 to 1:30. When set to 0, STo occurs as a result of the load impact and sudden acceleration or
deceleration.
2: The inertia ratio between the motor and the load is 1:30 to 1:50. When set to 1, STo occurs as a result of the load impact and sudden acceleration or
deceleration.
3: The inertia ratio between the motor and the load is greater than 1:50. When set to 1, STo occurs as a result of the load impact and sudden acceleration
or deceleration.
No.
n8-55
n8-62: Output Voltage Limit
n
Parameter Overview
No. Name
n8-62 Output Voltage Limit
204
Sets the time constant for voltage error compensation. Adjust the value when:
• hunting occurs at low speed
• hunting occurs with sudden load changes. Increase in steps of 0.1 or disable the compensation by setting
n8-45 to 0.
• oscillations occur at start. Increase the value in steps of 0.1.
Parameter Name
Load Inertia (PM OLV)
Sets the limit for the output voltage. Adjustment is normally needed only if the input voltage is below the n8-62 set
value. In this case set n8-62 to the input voltage.
Description
Setting Range
0 to 3
Description
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Range Default
0.00 to 10.00 1.00
Default
0
Range Default
0.0 to 230.0 200 Vac