Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 310 / 608

Operation selection at power failure Parameter
6 - 156
●
With frequency search
When "0 (initial value) or 10" is set in Pr. 162, the inverter smoothly starts after detecting the motor
speed upon power restoration. (The motor capacity should be equal to or one rank lower than
the inverter capacity.)
When using the frequency search, perform offline autotuning. (Refer to page 6-90 for ad-
vanced magnetic flux vector, general-purpose magnetic flux vector control and page 6-160
for V/F control.)
During reverse rotation, the inverter can be restarted smoothly as the direction of rotation is
detected. You can select whether to make rotation direction detection or not with Pr. 299
"Rotation direction detection selection at restarting". When capacities of the motor and inverter
differ, set "0" (without rotation direction detection) in Pr. 299.
햲
The output shut off timing differs according to the load condition.
Pr. 299 Setting
Pr. 78 Setting
0 1 2
9999
(Initial value)
With rotation
direction detection
Without rotation
direction detection
Without rotation
direction detection
0
Without rotation
direction detection
Without rotation
direction detection
Without rotation
direction detection
1
With rotation
direction detection
With rotation
direction detection
With rotation
direction detection
Tab. 6-40: Rotation direction detection
Fig. 6-80:
Automatic restart with frequency search
(Pr. 162 = 0/10)
I000722C
Power
supply
(L1, L2, L3)
Motor
speed
[r/min]
Output
frequency
[Hz]
Output
voltage
[V]
Power failure
Coasting time +
speed detection time
Pr. 57
Restart cushion
time Pr. 58
Acceleration time Pr. 611
a