Errors and Remedies
Section 6-3
6-4
6-3
Errors and Remedies
The following are considered to be main causes of system breakdowns.
·
Noise interference
Take appropriate countermeasures against noise.
·
Failures in peripheral devices
Repairs are required.
·
Failures in the Controller
Repairs are required.
·
Failures in the Antenna
Repairs are required.
·
Failures in the cable
Repairs are required.
·
Failures in the Tag
Repairs are required.
·
Other failures
Repairs are required.
Noise Interference
If the system malfunctions due to noise, refer to the following and take
appropriate countermeasures.
Circumstance of failure
Probably cause
Remedy
An instantaneous voltage drop due
to inrush current to the heavy load.
·
Increase the capacity of the power supply and that
of the power cable.
Occurs when a heavy-
duty motor, transformer,
or capacitor is turned ON.
Common mode noise caused by
the above cause.
·
Provide the power through a 1-to-1 non-grounded
insulating transformer.
·
Independently ground the Controller at a resistance
less than 100
W
.
Occurs irregularly
Noise on power line
·
Provide the power through a 1-to-1 non-grounded
insulating transformer or noise filter.
·
Independently ground the Controller at a resistance
less than 100
W
.
More than one V720-series
Antenna
·
When operating more than one V720-series
Antenna, provide a sufficient clearance between the
Antennas.
Refer to V720 series Antenna, Tag Manual for details.
Improvement in Grounding
Countermeasures Against Noise on Power Line
Other
device
Other
device
Controller
Controller
Ground at a
Resistance less
than 100
Ω
24VDC
Line filter
Controller
Twist the wires and do
Not lay them out in
Parallel to power lines.
100
W
24 VDC
0 V
