Mitsubishi Electric FR-F820-00046, Instruction Manual

Page: 590 / 940

(A) Application parameters Parameters
5 - 418
Setting for the automatic restart after instantaneous power failure operation (Pr. 162)
The Pr. 162 settings and the instantaneous power failure automatic restart operation under each op-
eration mode are as shown below.
The same operation is performed for the both settings
Restart operation with frequency search (Pr. 162 = "0, 2, 3, 10, 12, 13", Pr. 299)
●
When Pr. 162 = "0 (initial value), 2, 3, 10, 12, 13", the motor speed is detected at a power restoration
so that the motor can re-start smoothly.
●
The encoder also detects the rotation direction so that the motor can re-start smoothly even
during the reverse rotation.
●
Whether or not to detect the rotation direction can be selected by Pr. 299 "Rotation direction
detection selection at restarting".
If the motor capacity is different from the inverter capacity, set Pr. 299 = "0 (no rotation direction
detection)".
●
When the rotation direction is detected, the following operation is performed according to the
Pr. 78 "Reverse rotation prevention selection" setting.
●
By setting "3, 13" in Pr. 162, the restart can be made smoother with even less impact than when
"0, 2, 10, 12" is set in Pr. 162. When the inverter is restarted with "3, 13" set to Pr. 162, offline auto
tuning is required. (For details on offline auto tuning of Advanced magnetic flux vector control,
refer to page 5-303, and for details on offline auto tuning of V/F control, refer to page 5-427.)
Pr. 162 setting Restart operation
V/F control,
Advanced magnetic flux
vector control
PM motor control
0 (initial value), (2)
At first start Frequency search
Frequency search for PM
motor
(Refer to page 5-423)
1 At first start Reduced voltage start
3 At first start
Frequency search
(reduced impact restart)
10, (12) At every start Frequency search
11 At every start Reduced voltage start
13 At every start
Frequency search
(reduced impact restart)
Tab. 5-201: Setting of Pr. 162
Pr. 299 setting
Pr. 78 setting
0 1 2
9999 (initial value)

× ×
0 × × ×
1
  

: With rotation direction detection, X: Without rotation direction detection
Tab. 5-202: Rotation direction direction