Mitsubishi Electronics FR-A701 ユーザーズマニュアル
14/28
BCN-C22005-675
1.6
Low-speed range torque characteristics (Pr.788)
ÅtÅ
s
I
P
M
Å
t
* Current synchronization operation is always performed for IPM motors other than MM-CF, even if "9999" is set.
(1) When the low-speed range high-torque characteristic is enabled ("9999" (initial
value))
· The high frequency superposition control provides enough torque in the low-speed range operation.
· Refer to page 19 for the torque characteristics.
· Refer to page 19 for the torque characteristics.
(2) When the low-speed range high-torque characteristic is disabled ("0")
· The current synchronization operation reduces much motor noise compared with the high frequency superposition control.
· The torque in a low-speed range is low. Use this setting for an operation with light start-up load.
· Refer to page 19 for the torque characteristics.
· The torque in a low-speed range is low. Use this setting for an operation with light start-up load.
· Refer to page 19 for the torque characteristics.
Torque characteristics in a low-speed range can be changed.
Parameter
Number
Name
Initial
Setting
Setting
Range
Operation
788
Low-speed range torque
characteristics
9999
0
Disables the low-speed range high-torque
characteristic (current synchronization operation).
characteristic (current synchronization operation).
9999
*
Enables the low-speed range high-torque
characteristic (high frequency superposition control)
characteristic (high frequency superposition control)
REMARKS
Position control under PM sensorless vector control is not available when the current synchronization operation is selected.
P M
P M
P M
P M
P M
P M
bcnc22005635.fm 14 ページ ２０１４年１２月１１日 木曜日 午後５時５９分