Chapter 6 Control TerminalsC2000 Plus
6-3
When the photo-coupler uses internal power supply, the switch connection for Sink and
Source modes shows as Figure 6-2 and Figure 6-3: MI-DCM: Sink mode, MI-+24V:
Source mode.
When the photo-coupler uses external power supply, remove the short circuit cable
between the +24V and COM terminals. The connection mode is Sink mode or Source
mode according to the below:
The “+” of 24V connects to “COM: Sink mode
The “-“ of 24V connects to COM: Source mode
Transistor outputs (MO1, MO2, MCM)
Connect the digital outputs to the correct polarity.
When connecting a relay to the digital outputs, connect a surge absorber across the
coil and check the polarity.
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