Appendix 3 Operating The Inverter Using A Single-Phase Power Supply - Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual

Appendix 3 Operating the Inverter Using a Single-Phase Power Supply

Appendix 3 Operating the Inverter Using a Single-Phase Power Supply
If a single-phase power supply is used to operate the inverter only 4 of the 6 of the diodes will be used.
Therefore the ripple current of the capacitor will increase when compared to operation from a three-phase
power supply, resulting in a higher temperature rise of the converter and the capacitor. Operating the inverter
using a single-phase power supply requies derating of the output current.
Rating for inverter operation using single-phase power supply
y
……
Type FR-A520- K
Continuous current
(Constant Torque)
Voltage (Note 1)
Rated input AC current (A)
(Single phase)
Rated input AC voltage
Power supply system
capacty (kVA) (Note 2)
(Note 1) The maximum output voltage cannot exceed the power supply voltage. The maximum output
voltage may be set as desired below supply voltage.
(Note 2) The power supply capacity changes with the values of power supply side inverter impedance
(including those of the input reactor and cables).
Cautions on operating the inverter using single-phase power supply
y
(1) Connect the single-phase power supply to the terminals R and S of the inverter.
(2) If the capacity of the power supply is insufficient, the output voltage will become unstable under changing
load conditions. Therefore, be certain the power supply is adequate.
<Example circuit>
Power supply
Single phase
AC200 - 220V 50Hz
AC200 - 240V 60Hz
Note: Only the NA version A500 is UL listed for the above single-phase ratings.
The A500 inverter is not CE marked for single-phase operation. The A500 is not EMC compliant for
single-phase operation.
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0.4 0.75
1.5 2.5
Three phase, 200 to 220V 50Hz, 200 to 240V 60Hz
4.5 6.4
Single phase, 200 to 220V 50Hz, 200 to 240V 60Hz
1.5 2.5
NFB Inverter
U
R
V
S
W
T
Start signal
STF (STR)
SD
Grounding
208
APPENDICES
1.5 2.2
4 5
11.2 12.9
4.5 5.5
Motor
IM
3.7
7
17.4
9