YASKAWA Varispeed-606PC3 Instruction Manual download pdf (Page 177)

176

 Energy-saving Search Operation

In energy-saving control mode, the maximum applicable voltage is cal-

culated using the output power. However, a temperature change or the

use of another manufacturer’s motor will change the fixed constants,

and the maximum applicable voltage may not be emitted. In the search

operation, change the voltage slightly so that the maximum applicable

voltage can be obtained.

Search Operation Voltage Limit (n144)

Limits the range where the voltage is controlled. The constant is set in

% for 200-V/400-V Inverters. The search operation is not performed

when n144 is set to 0.

Search Operation Voltage Steps (n145, n146)

Constants n145 and n146 set the change in voltage for one cycle of the

search operation. For 200 V Class Inverters, set the values as percent-

ages of 200 V. For 400 V Class Inverters, set the values as percentages

of 400 V. Increase the value and the changes in the rotation speed will

also increase.

For 200 V Class Inverters, the range of the change in voltage is deter-

mined from the 100% and 5% settings for 200 V. For 400 V Class

Inverters, the range of the change in voltage is determined from the

100% and 5% settings for 400 V. The values calculated by linear inter-

polation are used for voltages other than these.

Constant No. Name Unit Setting Range Factory

Setting

n144 Search Operation Voltage Limit % 0 to 100 0

Constant

No.

Name Unit Setting Range Factory

Setting

n145 Search Operation Voltage Step at

100%

% 0.1 to 10.0 0.5

n146 Search Operation Voltage Step at

% 0.1 to 10.0 0.2

n143 Power Average Time ×24 ms 1 to 200 1 (24 ms)

1 2 ... 172 173 174 175 176 177 178 179 180 181 182 ... 255 256

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YASKAWA Varispeed-606PC3 Instruction Manual Page 177