Operation Selection At Power Failure And Instantaneous Power Failure; Automatic Restart After Instantaneous Power Failure (Pr. 57, Pr. 58, Pr. 162 To Pr. 165, Pr. 611) - Mitsubishi Electric F700 Instruction Manual

3.11 Operation selection at power failure and instantaneous
power failure
Purpose
At instantaneous power failure
occurrence, restart inverter without
stopping motor
When undervoltage or a power
failure occurs, the inverter can be
decelerated to a stop.
3.11.1 Automatic restart after instantaneous power failure
(Pr. 57, Pr. 58, Pr. 162 to Pr. 165, Pr. 611)
You can start the inverter without stopping the motor when commercial power supply operation is switched to
inverer operation, power comes back on after an instantaneous power failure or motor is coasting at start.
Parameter
Name
Number
57 Restart coasting time
58 Restart cushion time
Automatic restart after
162 instantaneous power failure
selection
163 First cushion time for restart
First cushion voltage for
164
restart
Stall prevention operation
165
level for restart
611 Acceleration time at a restart
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 140)
*1 When Pr. 570 Multiple rating setting = "1", performing parameter clear changes the initial value and setting range. (Refer to page 61.)
*2 The setting depends on capacities. (01160 or less/01800 or more)
Parameter that must be set
Automatic restart operation
after instantaneous power
failure
Power failure-time
deceleration-to-stop
function
Initial Value Setting Range
9999
1s
0
0s
0%
110%
*1
5/15s
*2
Operation selection at power failure
and instantaneous power failure
Pr. 57, Pr. 58, Pr. 162 to Pr. 165
Pr. 261 to Pr. 266
Description
00038 or less.......... 0.5s,
00052 to 00170 ...... 1s,
0
00250, 01160 ......... 3.0s
01800 or more ........ 5.0s
The above times are coasting time.
Set the waiting time for inverter-
0.1 to 5s triggered restart after an
instantaneous power failure.
9999 No restart
Set a voltage starting time at
0 to 60s
restart.
0 With frequency search
Without frequency search
1
(Reduced voltage system)
10 Frequency search at every start
Reduced voltage system at every
11
start
0 to 20s Set a voltage starting time at
restart.
Consider using these parameters
0 to 100%
according to the load (inertia
moment, torque) magnitude.
Consider the rated inverter current
as 100% and set the stall
0 to 120%
*1
prevention operation level during
restart operation.
Set the acceleration time to reach
0 to 3600s
the set frequency at a restart.
Acceleration time for restart is the
9999
normal acceleration time (e.g. Pr. 7).
Refer to Page
109
112
Pr. 56
page 104
Pr. 59
page 72
Pr. 161
page 217
Pr. 166
page 96
Pr. 577
page 184
Pr. 867
page 104
3
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