12.10 n: Special Adjustment
932 YASKAWA SIEPC71061705H GA700 Series Technical Manual
■ n7-10: Pull-in Current Switching Speed
No.
(Hex.)
Name Description
Default
(Range)
n7-10
(311A)
Expert
Pull-in Current Switching
Speed
Sets the speed range to operate with the pull-in current command. Drive rated frequency = 100%
value. If there is a large quantity of oscillation when you operate in the low speed range, increase
the setting value.
10.0%
(0.0 - 100.0%)
Note:
• When the drive accelerates, it enables these settings:
–Motor speed ≤ n7-10 + n7-11 [Drv Mode Switch Hysteresis Band]: n8-51 [Pull-in Current @ Acceleration]
–Motor speed > n7-10 + n7-11: b8-01 [Energy Saving Control Selection]
• When the drive decelerates, it enables these settings:
–Motor speed ≤ n7-10: n8-51 [Pull-in Current @ Acceleration]
–Motor speed > n7-10: b8-01 [Energy Saving Control Selection]
• If there is a large quantity of oscillation when you operate in the low speed range, increase the setting value.
• When it is most important to save energy in the low speed range, decrease the setting value.
■ n7-11: Drv Mode Switch Hysteresis Band
No.
(Hex.)
Name Description
Default
(Range)
n7-11
(311B)
Expert
Drv Mode Switch
Hysteresis Band
Usually it is not necessary to change this setting. Sets the hysteresis level for Switching Speed set
in n7-10 [Pull-in Current Switching Speed].
5.0%
(1.0 - 20.0%)
When the speed is lower than n7-10 + n7-11 during acceleration, the drive enables pull-in current.
Note:
• When the drive accelerates, it enables these settings:
–Motor speed ≤ n7-10 + n7-11: n8-51 [Pull-in Current @ Acceleration]
–Motor speed > n7-10 + n7-11: b8-01 [Energy Saving Control Selection]
• If there is a large quantity of oscillation when you operate in the low speed range, increase the setting value.
• When it is most important to save energy in the low speed range, decrease the setting value.
■ n7-13: Pull-in Current Switching Time
No.
(Hex.)
Name Description
Default
(Range)
n7-13
(311D)
Expert
Driving Method Switching
Time
Sets a time to enable the pull-in current commands.
100 ms
(0 - 1000 ms)
If the motor oscillates near the speed set in n7-10 [Pull-in Current Switching Speed], decrease the setting value by
20 ms.
■ n7-17: Resistance TemperatureCorrection
No.
(Hex.)
Name Description
Default
(Range)
n7-17
(3122)
Resistance
TemperatureCorrection
Sets the function to adjust for changes in the motor resistance value caused by changes in the
temperature.
1
(0 to 2)
0 : Invalid
1 : Valid (Only 1 time)
2 : Valid (Every time)
Note:
• For settings 1 and 2, the adjustment time can cause a delay before startup.
• For settings 1 and 2, the drive can set the line-to-line resistance value of E9-10 [Motor Line-to-Line Resistance].
• When the temperature will change at startup, use setting 2.
• To decrease the startup time, set this parameter to 0, then do line-to-line resistance tuning.
• If you will start from coasting, set this parameter to 0, then do line-to-line resistance tuning.
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