Troubleshooting - Omron V600-CD1D-V2 Operation Manual

Troubleshooting

5-6

Troubleshooting

Influence of Noise
No. Occurrence
On power application to
1
motor, transformer, or
capacitor.
2 Irregular.
3 Input signal turns ON when it
should be OFF.
The following are the major causes of ID Controller malfunctioning:
Cause
Influence of noise
Malfunctioning of
external devices
Malfunctioning of ID
Controller
Others
If the system malfunctions due to noise, take appropriate countermeasures
against noise by referring to the following table:
Possible cause
Momentary voltage drop due to
inrush current of large load.
Common mode noise due to the
above.
Noise superimposed on power
lines.
Inductive noise of input wiring.
(1) Improvement of grounding
Other
equipment
ID
Controller
(2) Countermeasures against noise
Power
supply
Noise filter
Measures
Take countermeasures
against noise.
Repair is needed.
Countermeasures
Increase the capacity of the power supply
facility or use larger power cables.
Supply power through 1:1 non-grounded
insulated transformer.
Do not share the ground lines with other
high-capacity loads. Independently ground
at less than 100 Ω.
Supply power through 1:1 non-grounded
insulated transformer or noise filter.
Separate input signal lines from other
power lines.
If the influence of noise is high, route input
lines using a grounded metal conduit or
use shielded cables.
Other
equipment
ID
Controller
Grounding at 100 Ω
ID
Controller
Use twisted pair cables.
Do not route the cables in parallel with power lines.
Section 5-6
59