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Input terminals
1.4.5 Control circuit common terminals (SD, 5, SE)
Terminals SD, 5, and SE are all common terminals (0V) for I/O signals and are isolated
from each other.
Terminal SD is a common terminal for the contact input terminals (STF, STR, RH, RM,
RL).
Terminal 5 is a common terminal for the frequency setting analog input signals and
indicator terminal "AM". It should be protected from external noise using a shielded or
twisted cable.
Terminal SE is a common terminal for the open collector output terminal (RUN).
1.4.6 Signal inputs by contactless switches
If a transistor is used instead of a
contacted switch as shown on the
right, the input signals of the
inverter can control terminals STF,
STR, RH, RM, RL.
REMARKS
1.When using an external transistor connected to an external power supply, use terminal PC
to prevent a malfunction from occurring due to a leakage current. (Refer to page 23.)
2.Note that an SSR (solid-state relay) has a relatively large leakage current at OFF time and it
may be accidentally input to the inverter.
+24V
STF, etc.
SD
Inverter
External signal input using transistor