Omron sysmac FH Series Hardware Setup Manual page 169

• Circuit ground (0 VDC) and frame ground are connected together. When connecting a
non-isolated device or a non-isolated interface to the controller, take appropriate actions to
avoid communication failures or damage to the mentioned ports.
• By the following case, make the connections so that the FG terminal of the connected device
has the same electrical potential as the controller. A difference in electrical potential between
the connected device and the controller may cause failure or malfunction.
• Ground the FG terminal of the non-isolated device
• Ground the SG (0 VDC) terminal of the isolated device or the non-isolated device
• Ground the SG (0 VDC) terminal of the controller
Power
supply
Precautions for Correct Use
The LCD panel used for the LCD-integrated type has been made using precision technology,
and sometimes a few pixels are missing in the panel. This is due to the structure of the LCD
panel, and is not a malfunction.
Vision System FH/FZ5 series Hardware Setup Manual (Z366)
Controller
Power
24 V
supply
circuit
SG SG
FG
SG: Signal Ground
FG: Frame Ground
5 Setup and Wiring
Non-isolated Device
Power
Non-isolated
supply
Interface
circuit
SG
FG
5
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