2-15
Figure 2.7 Inserting/Removing the Jumpers
To remove each of the jumpers, pinch its upper side between
your fingers, unlock its fastener, and pull it up.
When mounting it, fit the jumper over the connector until it
snaps into place.
Main circuit power input terminals L1/R, L2/S, and L3/T (three-phase input)
The three-phase input power lines are connected to these terminals.
1) For safety, make sure that the molded case circuit breaker (MCCB) or magnetic contactor (MC) is turned OFF before
wiring the main circuit power input terminals.
2) Connect the main circuit power supply wires (L1/R, L2/S and L3/T) to the input terminals of the inverter via an MCCB
or residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB)*, and an MC if necessary.
It is not necessary to align phases of the power supply wires and the input terminals of the inverter with each other.
* With overcurrent protection
It is recommended to insert a manually operable magnetic contactor (MC) that allows you to disconnect the inverte
from the power supply in an emergency (e.g., when the protective function is activated), preventing a failure or
accident from causing secondary disasters.
To drive the inverter with single-phase input power, consult your Fuji Electric representative.
Auxiliary control power input terminals R0 and T0 (for inverters with a capacity of 1.5 kW or above)
In general, the inverter runs normally without power supplied to the auxiliary control power input terminals R0 and T0. If the
inverter main power is shut down, however, no power is supplied to the control circuit so that the inverter cannot issue a
variety of output signals or display on the keypad.
To retain an alarm output signal ALM issued on inverter's programmable output terminals by the protective function or to
keep the keypad alive even if the main power has shut down, connect the auxiliary control power input terminals R0 and T0
to the power supply lines. If a magnetic contactor (MC) is installed in the inverter's primary circuit, connect the primary
circuit of the MC to these terminals R0 and T0.
Terminal rating:
200 to 240 VAC, 50/60 Hz, Maximum current 1.0 A (200 V class series with 22 kW or below)
200 to 230 VAC, 50/60 Hz, Maximum current 1.0 A (200 V class series with 30 kW or above)
380 to 480 VAC, 50/60 Hz, Maximum current 0.5 A (400 V class series)
When introducing a residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB),
connect its output (secondary) side to terminals R0 and T0. Connecting its input (primary) side to those terminals
causes the RCD/ELCB to malfunction since the input power voltage to the inverter is three-
hase. To avoid such problems, be sure to insert an insulation transformer or auxiliary
B contacts of a magnetic contactor in the location shown in Figure 2.8.
Figure 2.8 Connection Example of Residual-current-operated Protective Device (RCD)/
Earth Leakage Circuit Breaker (ELCB)
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