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Precautions for Safe Use
Grounding
• The Smart camera casing and grounding wire of the input output cable must be grounded ac-
cording to Class D grounding (grounding resistance of 100Ω or less).
• Be sure to apply Class D grounding (100Ω or lower grounding resistance) to the ground wire
of the SDU body.
• Do not share the ground wire with other equipment or connect it to the beams of the building.
It could be adversely affected.
• Keep the ground line as short as possible by setting the grounding point as close as possible.
• The FHV body enclosure, the I/O connector enclosure, the EtherNet connector enclosure,
and the lighting connector enclosure are all at the same potential (FG) and are connected to
0V via a capacitor and a resistor in the internal circuit.
• When connecting to a PLC, or other external device, ensure that FG of the Smart Camera
and the FG of the external device are grounded so as to have the same electric potential.
Depending on the grounding method, a potential difference may occur between the Smart
Camera and the external device, which may result in equipment failure, or malfunction.
• When the positive (+) terminal of 24 VDC power supply is grounded.
- Inside of an external device, the shell of an Ethernet connector and SG should not be con-
nected. [(1)]
- Inside of an external device, 0V and FG should not be connected. [(2)]
Since FG and 0V will make short-circuit like below diagram, do not ground the positive (+)
terminal.
Power supply
circuit
FG
Precautions for Correct Use
Power Supply and Wiring
• If there is a surge on the power supply line, please use a surge absorber, depending on the
usage environment it is connected in.
• If using an I/O cable 20 m long, confirm that the power supply output is 24 VDC or higher. If it
is lower than 24 VDC, the product does not operate.
• Do not turn off the power while saving data to the Smart Camera. Doing so causes the data
in the memory to be corrupted, resulting in the product not operating properly upon the next
start-up.
• Before turning power OFF, confirm that data save processing is completed according to the
following guidelines.
-When the data save process is performed by operation on the smart camera: The data save
process is completed and the next operation is enabled
-When the data save process is executed by a communication command: Processing of the
corresponding command has been completed and BUSY is OFF
• When touching a terminal part or a signal wire in a connector, take anti-static measures using
a wrist strap or another device to prevent damage from static electricity.
• Do not turn OFF the power while any message is displayed indicating that a task is in prog-
ress. Doing so causes the data in the memory to be corrupted, resulting in the product not
operating properly upon the next start-up.
• After turning off the power, wait at least 1 second before restarting.
FHV Series Smart Camera Setup Manual (Z408-E1)
I/O connector's
shell
Ethernet connector's
shell
FG
SG:Signal Ground
FG:Frame Ground
Ground
6 Power Supply and I/O Interface
24VDC
Power
0V
supply
External device
SG
RS232C 0V
SG
Shield
FG
Ground
1
Shield
FG
SG
24VDC
Power
0V
supply
SG
2
FG
Ground
6
6-3
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