Setting For The Automatic Restart After Instantaneous Power Failure Operation (Pr.162); Restart Operation With Frequency Search (Pr.162 = "0, 2, 3, 10, 12, 13", Pr.299) - Mitsubishi Electric FR-F800 Instruction Manual

(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 operation mode are as
shown below.
Restart
Pr.162 setting
operation
0 (initial value), (2) At first start

1 At first start
3 At first start
10, (12) At every start Frequency search

11 At every start Reduced voltage start
13 At every start

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 

0 (initial value)
1 
: With rotation direction detection
• 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
to page 423.)
V/F control, Advanced magnetic flux vector control
Instantaneous (power failure) time
Power supply
(R/L1, S/L2,
T/L3)
Motor speed N
(r/min)
Inverter output
frequency f(Hz)
Inverter output
voltage E(V)
Speed
Coasting
detection
+
time (Pr.57)
time
∗ The output shut off timing differs
according to the load condition.
416
PARAMETERS
V/F control,
Advanced magnetic flux
vector control
Frequency search
Reduced voltage start
Frequency search
(reduced impact restart)
Frequency search
(reduced impact restart)
Pr.78 setting
0 1




: Without rotation direction detection
∗
Restart cushion
time (Pr.58 setting)
Acceleration time
at a restart
(Pr.611 setting)
PM motor
control
Frequency
search for PM
motor
(Refer to page
420)
2



page 341, and for details on offline auto tuning of V/F control, refer