When Supplying 24 V External Power To The Control Circuit - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

• FR-A820-00770(15K) or higher, FR-A840-00470(18.5K) or higher
(a)Remove the upper screws.
(b)Remove the lower screws.
(c) Pull the jumper toward you to remove.
(d)
Connect the separate power supply cable for the control circuit to the upper terminals (R1/L11, S1/L21).
NOTE
• When using separate power supplies, always remove the jumpers across terminals R/L1 and R1/L11 and across S/L2 and S1/
L21. The inverter may be damaged if the jumpers are not removed.
• When the control circuit power is supplied from other than the input line of the MC, the voltage of the separate power supply
must be the same as that of the main control circuit .
• The power capacity necessary when separate power is supplied from R1/L11 and S1/L21 differs according to the inverter
capacity.
FR-A820-00630(11K) or lower
FR-A840-00380(15K) or lower
FR-A820-00770(15K) or higher
FR-A840-00470(18.5K) or higher
• If the main circuit power is switched OFF (for 0.1 seconds or more) then ON again, the inverter is reset and a fault output will
not be held.
2.6.6 When supplying 24 V external power to the control
circuit
Connect the 24 V external power supply across terminals +24 and SD to turn the I/O terminal ON/OFF operation, keep the
operation panel ON, and carry out communication during communication operation even at power-OFF state of inverter's main
circuit power supply. When the main circuit power supply is turned ON, the power supply is switched from the 24 V external
power supply to the main circuit power supply.
78
2. INSTALLATION AND WIRING
2.6 Control circuit
R1/L11 S1/L21
Power supply
terminal block
for the control circuit
R/L1 S/L2 T/L3
MC
Main power supply
FR-A820-00770(15K)
to 01250(22K)
FR-A840-00470(18.5K),
00620(22K)
Power supply
terminal block for
the control circuit
Inverter
(c)
Power supply terminal block
for the control circuit
(a)
(b)
(d)
FR-A820-01540(30K) FR-A820-01870(37K) or higher
FR-A840-00770(30K) FR-A840-00930(37K) or higher
Power supply
capacity
60 VA
80 VA
R1/L11
S1/L21