YASKAWA V1000 Series

No. Name Description Range Default
n8-54
Voltage Error
Compensation Ttime
Constant
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.
0.00 to 10.00 1.00
n
n8-55: Load Inertia (PM OLV)
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. Parameter Name Setting Range Default
n8-55 Load Inertia (PM OLV) 0 to 3 0
n
n8-62: Output Voltage Limit
Parameter Overview
No. Name Description Range Default
n8-62 Output Voltage Limit
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.
0.0 to 230.0 200 Vac
5.9 n: Special Adjustments
204
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)