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

1.7.5 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) and frequency output signal (FM).

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).

REMARKS

Terminal FM is provided for the FR-S520-0.1K to 3.7K (-R) (-C), FR-S520S-0.1K to 1.5K (-R) and FR-S510W-0.1K to 0.75 (-R), and terminal AM is provided for the FR-S520-0.1K to 3.7K-NA, FR-S520S-0.2K to 1.5K-EC (R) and FR-S510W-0.1K to 0.75K-NA.

1.7.6 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.

+24V

STF, etc.

1

Inverter

SD

External signal input using transistor

REMARKS

1.When using an external transistor connected with the external power supply, use terminal PC to prevent a malfunction from occurring due to a leakage current. (Refer to page 25.)

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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