YASKAWA GA700 Series Technical Manual page 932

12.10 n: Special Adjustment
■
n7-10: Pull-in Current Switching Speed
No.
Name
(Hex.)
n7-10 Pull-in Current Switching
Speed
(311A)
Expert
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.
Name
(Hex.)
n7-11 Drv Mode Switch
Hysteresis Band
(311B)
Expert
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.
Name
(Hex.)
n7-13 Driving Method Switching
Time
(311D)
Expert
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.
Name
(Hex.)
n7-17 Resistance
TemperatureCorrection
(3122)
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.
932
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
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].
V/f CL-V/f OLV CLV AOLV
Sets a time to enable the pull-in current commands.
V/f CL-V/f OLV CLV AOLV
Sets the function to adjust for changes in the motor resistance value caused by changes in the
temperature.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061705H GA700 Series Technical Manual
Default
(Range)
10.0%
(0.0 - 100.0%)
Default
(Range)
5.0%
(1.0 - 20.0%)
Default
(Range)
100 ms
(0 - 1000 ms)
Default
(Range)
1
(0 to 2)