Mitsubishi Electric FR-F740 EC Instruction Manual page 304

Operation selection at power failure
Pr.
Name
No.
57
Restart coasting time
58
Restart cushion time
Automatic restart after
162
instantaneous power
failure selection
First cushion time for
163
restart
First cushion voltage
164
for restart
Stall prevention opera-
165
tion level for restart
Rotation direction
299
detection selection at
restarting
Acceleration time at a
611
restart
The above parameters can be set when Pr. 160 = 0.
When Pr. 570 "Multiple rating setting" = 1, performing parameter clear changes the initial
value and setting range.
6 - 154
Initial Setting
Value Range
0
01160
or 0.1–5s
9999
less
01800
or 0.1–30s
more
9999
1s 0–60s
0
1
0
10
11
0s 0–20s
0% 0–100%
110% 0–120%
0
1
9999
9999
01160
or 5s
less
0–3600s, 9999
01800
or 15s
more
Description
00038 or less .................... 0.5s
00052–00170....................... 1s
00250–01160....................... 3s
01800 or more ..................... 5s
Set the waiting time for inverter-
triggered restart after an instanta-
neous power failure.
No restart
Set a voltage starting time at
restart.
With frequency search
No frequency search:
The output voltage is increased
until the preset frequency is
reached, irrespective of the cur-
rent motor speed.
Frequency search at every start
On every start the output voltage
is increased until the preset fre-
quency reached, irrespective of
the current motor speed.
Set a voltage starting time at
restart.
Consider using these parameters
according to the load (inertia
moment, torque) magnitude.
Consider the rated inverter cur-
rent according to the overload
capacity as 100% and set the stall
prevention operation level during
restart operation.
Without rotation direction
detection
With rotation direction detection
When Pr. 78 = "0", the rotation
direction is detected.
When Pr. 78 = "1","2", the rotation
direction is not detected.
Set the acceleration time to reach
the set frequency at a restart.
Acceleration time for restart is the
normal acceleration time
(e.g. Pr. 7) when "9999" is set.
Parameter
Parameters referred to
7 Acceleration time
21 Acceleration/
deceleration time
increments
13 Starting frequency
65 Retry selection
67–69 Retry function
78 Reverse rotation
prevention selec-
tion
178–189 Input terminal
function selection
Refer to
Section
6.6.1
6.6.1
6.6.2
6.12.1
6.12.1
6.16.3
6.9.1