Mitsubishi Electronics FR-S500 instruction manual Control circuit common terminals SD, 5, SE

Input terminals

1.4.5Control 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).

1.4.6Signal 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

+24V

STF, etc.

Inverter

SD

External signal input using transistor

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.

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