KEYENCE LK-G Series - Manual (Page 115)

4-3
4
LK-G-M-NO4-E
4 Input/Output Terminals
Caution
• Precautions for Wiring
Part of each input/output circuit of the LK-G Series is internally common. Be sure that no
potential difference is generated between the common terminals due to the potential dif-
ference between wires or external devices.
Refer to "Precautions for Wiring" page 4 for details.
•
NPN type
24 V DC (-) , COM OUT and COM IN are all common via a choke coil. Also, they are com-
mon to 0 V of the 6-pin I/O terminal and COM of the expansion connector via a choke coil.
Be careful not to generate a potential difference.
• PNP type
24 V DC (-) and COM IN are common via a choke coil. Also, they are common to 0 V of the
6-pin I/O terminal and COM IN of the expansion connector via a choke coil. Be careful not
to generate a potential difference.COM OUT and COM OUT of the extension connector
are common.
• 24 V DC (-) and SG (GND) of RS-232C are common via a choke coil.
Be careful not to generate a potential difference.
• Refer to page 4-10 for the electrical specifications.
• Refer to page 4-13 for the timing chart.
Reference