Mitsubishi Electric FR-F820-00077 Instruction Manual page 590

(A) Application parameters
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.
Pr. 162 setting
0 (initial value), (2)
Tab. 5-201: Setting of Pr. 162
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.
Pr. 299 setting
9999 (initial value)
: With rotation direction detection, X: Without rotation direction detection
Tab. 5-202: Rotation direction direction
● 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.)
5 - 418
Restart operation
At first start
1 At first start
3 At first start
At every start
10, (12)
11 At every start
13 At every start
0
1
V/F control,
Advanced magnetic flux
vector control
Frequency search
Reduced voltage start
Frequency search
(reduced impact restart)
Frequency search
Reduced voltage start
Frequency search
(reduced impact restart)
Pr. 78 setting
0

×
 
PM motor control
Frequency search for PM
motor
(Refer to page 5-423)
1 2
× ×
× ×

Parameters