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Automatic Restart After Instantaneous Power Failure - Mitsubishi Electric FR-CS84-012 Instruction Manual

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5.10.3 Automatic restart after instantaneous power failure

The inverter can be restarted without stopping the motor operation in the following situations:
• When an instantaneous power failure occurs during inverter running
• When the motor is coasting at start
Pr.
Name
30
Regenerative function
E700
selection
57
Restart coasting time
A702
58
Restart cushion time
A703
165
Stall prevention operation
A710
level for restart
611
Acceleration time at a
F003
restart
*1
The coasting time when Pr.57 = "0" is as shown below.
FR-CS84-036 or lower, FR-CS82S-070 or lower: 1 s
FR-CS84-050 to FR-CS84-160, FR-CS82S-100: 2 s
FR-CS84-230 or higher: 3 s
• To operate the inverter with the automatic restart after instantaneous power failure function enabled, check the following.
• Set "0" in Pr.57 Restart coasting time.
 Automatic restart after instantaneous power failure function
15 to 100 ms
Power
ON
OFF
supply
• When the automatic restart after instantaneous power failure function is selected, the motor driving is resumed at power
restoration after an instantaneous power failure or undervoltage. (E.UVT is not activated.)
 Automatic restart operation of the MRS (X10) signal
• The restart operation after restoration from output shutoff by the MRS (X10) signal is as shown in the following table
according to the
setting.
Pr.30
Pr.30 setting
2
Other than the above
 Adjustment of restart coasting time (Pr.57)
• Coasting time is a time period before starting the restart operation.
• To enable restart operation, set "0" in
to the following value (unit: s). Generally, this setting does not interfere with inverter operation.
Three-phase 400 V class FR-CS84-[]-60
012
022
036
050
080
1
1
1
2
2
• Inverter operation is sometimes hindered by the size of the moment of inertia (J) of the load or running frequency. Adjust
this coasting time within the range 0.1 s to 30 s to match the load specification.
 Restart cushion time (Pr.58)
• The cushion time is the time taken to raise the voltage to the level required for the specified speed.
Initial
Setting
value
range
0, 1
No restart
0
2
No restart
0
Coasting time differs according to the inverter capacity.
Set the waiting time for the inverter to perform a restart after restoring power
9999
0.1 to 30 s
due to an instantaneous power failure.
9999
No restart
1 s
0 to 60 s
Set the voltage cushion time for restart.
Set the stall prevention level at restart operation on the assumption that the
150%
0 to 400%
inverter rated current is 100%.
Set the acceleration time that takes to reach Pr.20 Acceleration/
0 to 3600 s
deceleration reference frequency setting at a restart.
9999
Standard acceleration time (for example, Pr.7) is applied as the acceleration
9999
time at restart.
Operation after restoration from output shutoff by the MRS (X10) signal
Restart operation (starting from the coasting speed).
Starting from the Pr.13 Starting frequency.
Pr.57 Restart coasting time
Single-phase 200 V class FR-CS82S-[]-60
120
160
230
295
3
3
1
2
2
Description
. If "0" is set in
, the coasting time is automatically set
Pr.57
025
042
070
100
1
1
2
*1
5. PARAMETERS
5.10 (A) Application parameters
2
2
3
4
5
6
7
8
9
10
159

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