Mitsubishi Electric FR-CC2-P Instruction Manual page 51

Control circuit
2.7.5
When using separate power supplies for the
control circuit and the main circuit
Cable size for the control circuit power supply (terminals R1/L11 and S1/
L21)
• Terminal screw size: M4
• Cable gauge: 0.75 mm
• Tightening torque: 1.5 Nm
Connected to
When a fault occurs, opening of the electromagnetic contactor (MC) on the converter unit power supply side results in power
loss in the control circuit, disabling the fault output signal retention. Terminals R1/L11 and S1/L21 are provided to hold a fault
signal. In this case, connect the power supply terminals R1/L11 and S1/L21 of the control circuit to the input side of the MC.
Do not connect the power cable to incorrect terminals. Doing so may damage the converter unit.
<Connection diagram>
Converter unit
MC
R/L1
S/L2
T/L3
R1/L11
S1/L21
Remove the jumper
(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 from terminals R1/L11 and S1/L21. The converter unit may
be damaged if the jumpers are not removed.
• The voltage should be the same as that of the main control circuit when the control circuit power is supplied from other than
the input side of the MC.
• The power capacity necessary when separate power is supplied from R1/L11 and S1/L21 is 80 VA.
• If the main circuit power is switched OFF (for 0.1 s or more) then ON again, the converter unit is reset and a fault output will
not be held.
• When a power supply is provided for the control circuit separately from the main circuit and a capacitive device (such as an
EMC filter or a radio noise filter) is connected, connect a noise filter (example: RTMN5006 manufactured by TDK-Lambda
Corporation) to the control circuit power supply.
50
INSTALLATION AND WIRING
2 2
to 2 mm
(c)
Power supply terminal block
for the control circuit
(a)
(b)
(d)
Power supply
terminal block
for the control circuit
R1/L11
S1/L21