Replacing The Main Circuit Terminal Block (Tb) Cover - FujiFilm Frenic-Mini Instruction Manual

Main circuit power input terminals, L1/R, L2/S, and L3/T (for three-phase voltage input)
or L1/L and L2/N (for single-phase voltage input)
Figure 2.10 Main Circuit Power Input
Terminal Connection

2.3.6 Replacing the Main Circuit Terminal Block (TB) Cover

1) As shown in Figure 2.11, pull out the wires from the main circuit terminals in parallel.
2) Hold both sides of the main circuit TB cover between thumb and forefinger and slide it back
into place. Pull the wires out through the grooves of the main circuit TB cover.
Replace the main circuit TB cover, taking care not to apply any stress to the wires. Ap-
plying stress to the wires will impose a mechanical force on the screws on the main cir-
cuit terminals, which may loosen the screws.
Figure 2.11 Replacing the Main Circuit Terminal Block (TB) Cover
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 grounding wire of the main circuit power
input terminals (L1/R, L2/S and L3/T or L1/L and L2/N) to
the grounding terminal ( G).
3) Connect the main circuit power supply wires (L1/R, L2/S
and L3/T or L1/L and L2/N) to the input terminals of the
inverter via an MCCB or residual-current-operated pro-
tective device (RCD)/earth leakage circuit breaker
(ELCB)*, and 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 the exception of those exclusively designed for protection
from ground faults
It is recommended that a manual on/off magnetic
contactor be connected. This is to enable you to
disconnect the inverter from the power supply at an
emergency (e.g., when the protective function is
activated) so as to prevent a failure or accident from
causing the secondary problems.
2-13