Mitsubishi FR-D720-5.5K - Page 89

80
Parameter list
Change of the monitor
output from terminal FM
55
Frequency
monitoring
reference
0.01Hz 60Hz 0 to 400Hz
Full-scale value to output the output
frequency monitor value to terminal FM.

56
Current
monitoring
reference
0.01A
Rated
inverter
current
0 to 500A
Full-scale value to output the output
current monitor value to terminal FM.

Restart operation
after instantaneous
power failure/Flying start
57
Restart coasting
time
0.1s 9999
0
1.5K or less .................. 1s
2.2K to 7.5K ................. 2s
11K, 15K....................... 3s
The above times are coasting time.

0.1 to 5s
Waiting time for inverter-triggered restart
after an instantaneous power failure.
9999 No restart
58
Restart cushion
time
0.1s 1s 0 to 60s Voltage starting time at restart. 
30
Regenerative
function selection
10
0, 1
The motor starts at the starting frequency
when MRS (X10) turns ON then OFF
2
Restart operation is performed when MRS
(X10) turns ON then OFF
162
Automatic restart
after
instantaneous
power failure
selection
11
0
With frequency
search
When using the
frequency search,
consider the wiring
length limit.
(Refer to page 14)

1
Without frequency
search (reduced
voltage system)
10
Frequency search at
every start
11
Reduced voltage at
every start
165
Stall prevention
operation level for
restart
0.1% 150% 0 to 200%
Considers the rated inverter current as
100% and sets the stall prevention
operation level during restart operation.

298
Frequency search
gain
1 9999
0 to 32767
When offline auto tuning is performed
under V/F control, frequency search gain
necessary for frequency search for
automatic restart after instantaneous
power failure is set as well as the motor
constants (R1).
 × 
9999
Uses the Mitsubishi motor (SF-JR, SF-
HRCA) constants
299
Rotation direction
detection
selection at
restarting
10
0 Without rotation direction detection

1 With rotation direction detection
9999
When Pr. 78 =0, the rotation direction is
detected.
When Pr. 78 =1, 2, the rotation direction is
not detected.
611
Acceleration time
at a restart
0.1s 9999
0 to 3600s
Acceleration time to reach Pr.20
Acceleration/deceleration reference frequency
at a restart.

9999
Acceleration time for restart is the normal
acceleration time (e.g. Pr. 7).
Function
Parameter
Name
Incre-
ments
Initial
Value
Range Description
Parameter
Copy
Parameter
Clear
All Parameter
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Related
Parameter