8-8
8.4 Terminal Specifications
8.4.1 Terminal functions
For details about the main and control circuit terminals, refer to Chapter 2, Section 2.3.5 and
Section 2.3.7 (Table 2.8), respectively.
8.4.2 Connection diagram in operation by external signal inputs
(Note 1) Install a recommended molded case circuit breaker (MCCB) or a residual-current-operated
protective device (RCD)
/earth leakage circuit breaker (ELCB) (with overcurrent protection) in the
primary circuit of the inverter to protect wiring. At this time, ensure that the circuit breaker capacity
is equivalent to or lower than the recommended capacity.
(Note 2) A magnetic contactor (MC) should, if necessary, be mounted independent of the MCCB or ELCB
to cut off the power fed to the inverter. Refer to page 9-2 for details. MCs or solenoids that will be
installed close to the inverter require surge absorbers to be connected in parallel to their coils.
(Note 3) When connecting a DC reactor (optional accessory), remove the jumper bar from terminals [P1]
and [P+]. Note that for single-phase 100 V series of inverters, the terminal assignment differs
from the diagram above. For details on the terminal assignment, refer to page 10-1 of Chapter 10.
(Note 4) (THR) function can be used by assigning code "9" (Alarm from external equipment) to any of
terminals [X1] to [X3], [FWD] or [REV] (function code E01 to E03, E98, or E99). For details, refer
to Chapter 9.
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