Automatic Restart After Instantaneous Power Failure/Flying Start With An Ipm Motor - Mitsubishi Electric FR-F800 Instruction Manual

(A) Application parameters
5.11.11
Automatic restart after instantaneous power
failure/flying start with an IPM motor
When using the IPM motor MM-EFS/MM-THE4, the inverter operation can be restarted without stopping the motor
operation.
When the automatic restart after instantaneous power failure function is selected, the motor driving is resumed in the
following situations:
• When power comes back ON during inverter driving after an instantaneous power failure
• When the motor is coasting at start
Pr. Name
57
Restart coasting time
A702
Automatic restart after
162
instantaneous power
A700
failure selection
611 Acceleration time at a
F003 restart
Automatic restart after instantaneous power failure function
15 to 100ms
Power
ON
supply
IPF
OFF
Connection (CS signal)
• When the automatic restart after instantaneous power failure / flying start signal (CS) is assigned to the input terminal by
setting Pr.178 to Pr.189 (input terminal function selection), restart operation is enabled at turn-ON of the CS signal.
• When the CS signal is assigned to an input terminal and Pr.57 Restart coasting time  "9999" (with restart), the inverter
cannot be operated while the CS signal remains OFF.
NOTE
• Changing the terminal assignment using Pr.178 to Pr.189 (input terminal function selection) may affect other functions.
Set parameters after confirming the function of each terminal.
• If the CS signal is not assigned to any input terminal, solely setting Pr.57 will enable the restart operation at all times.
• If the restart operation is selected, instantaneous power failure protection (E.IPF) is disabled while the fault output signal is
output at an instantaneous power failure.
• The SU and FU signals are not output during the restart. These signals are output after the restart cushion time passes.
• Restart operation is also performed after the inverter reset is released or after the retry by the retry function occurs.
420
PARAMETERS
Initial
value
9999
0
9999
• The inverter output is shut off at the activation of the instantaneous
power failure protection (E.IPF) or undervoltage protection (E.UVT).
OFF
(Refer to
ON
• When E.IPF or E.UVT is activated, the instantaneous power failure/
undervoltage (IPF) signal is output.
• The IPF signal is assigned to terminal IPF in the initial status. By setting
"2 (positive logic) or 102 (negative logic)" in any of Pr.190 to Pr.196
(output terminal function selection), the IPF signal can be assigned
to another terminal.
• When the automatic restart after instantaneous power failure function is
selected, motor driving is resumed at the power restoration after an
instantaneous power failure or undervoltage. (E.IPF and E.UVT are not
activated.)
Setting
range
0 No coasting time
Set the waiting time for the inverter to perform a restart after
0.1 to 30 s
restoring power due to an instantaneous power failure.
9999 No restart
0, 1, 2, 3 Frequency search only performed at the first start
10, 11, 12,
Frequency search at every start
13
Set the acceleration time to reach Pr.20 Acceleration/
0 to 3600 s
deceleration reference frequency at restart.
Standard acceleration time (for example, Pr.7) is applied as
9999
the acceleration time at restart.
page 535 for E.IPF or E.UVT.)
PM PM PM
Description