Mitsubishi Electric FR-E800 Series Instruction Manual page 407

 Restart at every start (Pr.162 = "10 or 11")
• When "10 or 11" is set in Pr.162, a restart operation is performed at each start and automatic restart after instantaneous
power failure (after the time period set in Pr.57 elapsed). When "0 (initial value) or 1" is set in Pr.162, a restart operation
is performed at the first start after a power-ON, and from the second power-ON onwards, a start from the starting frequency
is performed.
 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 Pr.30 setting.
Pr.30 setting
2
Other than the above
NOTE
• When output is shut off using safety stop function (terminals S1 and S2), the inverter restarts in the same way as when output
is shut off by the MRS (X10) signal.
• Operation is selectable as shown in the table above when Pr.162 Automatic restart after instantaneous power failure
selection = "0 or 1". When Pr.162 Automatic restart after instantaneous power failure selection = "10 or 11" (automatic
restart operation at each start), a restart operation is performed regardless of the setting of Pr.30 Regenerative function
selection.
• Set "24" in any parameter from Pr.178 to Pr.189 (Input terminal function selection) to assign the output stop (MRS) signal
to the input terminal, and "10" to assign the Inverter operation enable (X10) signal.
 Adjustment of restart coasting time (Pr.57)
• Restart coasting time is the time period from the occurrence of instantaneous power failure until the operation is restarted
after power is restored.
With frequency search, the motor speed is detected and operation is restarted after the coasting time.
• To enable restart operation, set "0" to Pr.57 Restart coasting time. If "0" is set to Pr.57, the coasting time is automatically
set to the following number of seconds. Generally, this setting does not interfere with inverter operation.
Voltage
class
FR-E820-0080(1.5K) or lower
FR-E820S-0080(1.5K) o lower
200 V
FR-E820-0110(2.2K) or higher
FR-E820S-0110(2.2K)
FR-E840-0040(1.5K) or lower
400 V
FR-E840-0060(2.2K) or higher
FR-E860-0027(1.5K) or lower
575 V
FR-E860-0040(2.2K) or higher
Interruption > Pr.57 setting
Power supply
(R/L1、S/L2、T/L3)
Inverter output
frequency f (Hz)
• Inverter operation is sometimes hindered by the size of the moment of inertia (J) of the load, output frequency, or the
residual magnetic flux in the motor. Adjust this coasting time within the range 0.1 to 30 seconds to match the load
specification.
406
15. (A) Application Parameters
15.7 Automatic restart after instantaneous power failure / flying start with an induction motor
Operation after restoration from output shutoff by the MRS (X10) signal
Restart operation (starting from the coasting speed)
Starting from Pr.13 Starting frequency.
Inverter
ND
FR-E820-0050(0.75K) or lower
FR-E820S-0050(0.75K) or lower
FR-E820-0080(1.5K) or higher
FR-E820S-0080(1.5K) or higher
FR-E840-0026(0.75K) or lower
FR-E840-0040(1.5K) or higher
FR-E860-0017(0.75K)
FR-E860-0027(1.5K) or higher
Instantaneous power failure
(interruption) time
Coasting time
Pr.57 setting
Coasting time (s)
LD
1
2
1
2
0.5
1
Interruption ≤ Pr.57 setting
Instantaneous power failure
(interruption) time
Power supply
(R/L1、S/L2、T/L3)
Inverter output
frequency f (Hz)
Coasting time
Pr.57 setting