Toshiba LF600F - Manual (Page 32)

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5.5 Digital I/O Connections
Digital I/O terminals consist of contact output terminals (DOl and D02), voltage signal input
terminal (DI, optional), and signal common terminal (COM). Each terminal (DOl, D02 and DI) is
isolated from internal circuits. Terminal (COM) is the signal common for the other three terminals
(DOl, D02 and DI).
Functions can be assigned for each terminal with the LCD control keys. See Chapter 10, “Digital I/O
Functions.”
To connect an electromagnetic relay or counter to the contact output terminal (DOl or D02), put a
surge-absorbing diode into the input circuit of the relay or counter. See Figure 5.11 for an example of
electromagnetic counter connection.
*1 ...Digital output D02 and voltage signal input DI are optional.
(Power supply-built-in electronic counter)
Figure 5.11 Electromagnetic Counter Connection Example
Note 1: Use a surge-absorbing diode of the rating: current rating lA and voltage rating 200 V
minimum.
Note 2: In the case of standard specification (digital input DI, no output D02), the semiconductor
contact point, photo coupler and resistor are not built in. Leave DI and D02 disconnected.
Note 3: When a power supply-built-in electronic counter is used, the serge-absorbing diode is
not required.
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