79
Heat-resistive RFID System
User's Manual
S
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tion 5
Er
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Section 5
Troubleshooting
Errors and Countermeasures
The seven main causes of problems that may occur in the V680 Series are as follows:
• Noise interference
• External device failure
• Controller failure
• Antenna failure
• Cable failure
• Tag failure
• Others
Noise Interference
If the system malfunctions due to noise, refer to the following table and take appropriate
countermeasures.
No.
Occurrence of fault
Possible cause
Countermeasure
1
Occurs when a heavy-duty motor,
transformer, or capacitor is turned
ON.
An instantaneous voltage drop due
to inrush current to the heavy load.
• Increase the capacity of the power
supply and the size of the power
cable.
Common mode noise as a result of
the above cause.
• Provide the power through a 1-to-1
non-grounded insulating trans-
former.
• Do not use the same ground as
other large-capacity devices. Inde-
pendently ground the Controller at
a resistance of 100
Ω
or less.
2
Occurs irregularly
Noise on power line
• Provide the power through a 1-to-1
non-grounded insulating trans-
former or noise filter.
• Do not use the same ground as
other large-capacity devices. Inde-
pendently ground the Controller at
a resistance of 100
Ω
or less.
Multiple V680-series Antennas
• Provide sufficient space between
Antennas when operating multiple
V680-series Antennas.
Improvement in Grounding
Countermeasures Against Noise on Power Line
Other
device
Controller
Other
device
Controller
Ground at a
resistance less
than 100
Ω
24 VDC
0 V
Line filter
Controller
Twist the wires and do
not lay them out parallel
to power lines.
. . . . . . . . . . . . Take adequate countermeasures against noise.
. . . . . . Repairs are required.
