Control Circuit Common Terminals (Sd, 5, Se); Signal Inputs By Contactless Switches - Mitsubishi FR - S500 Instruction Manual

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.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.
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.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.
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.
External signal input using transistor
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+24V
STF, etc.
Inverter
SD
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