Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 422

If accuracy in measuring and control is required when using in an environment exposed to electrical stress,
such as an EMS test, implementing the following details is recommended.
For users of proprietary cables (dedicated for sensors or actuators), these users should follow those
manufacturers' installation requirements.
Mitsubishi Electric recommends that shielded cables be used. If no other EMC protection is provided, users
may experience temporary loss of accuracy between +10%/-10% in very heavy industrial areas.
However, Mitsubishi Electric suggests that if adequate EMC precautions are followed with general good EMC
practice for the user's complete control system, users should expect normal errors as specified in this manual.
• Sensitive analog cables should not be laid in the same trunking or cable conduit as high voltage cabling.
Where possible, users should run analog cables separately.
• Good cable shielding should be used. When terminating the shield at Earth - ensure that no earth loops are
accidentally created.
• When reading analog values, EMC induced errors can be smoothed out by averaging the readings. This
can be achieved either through functions on the analog devices or through a user's program.
APPX
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Appendix 10 Standards