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3. WIRING
3-4
3.1.2 Noises
Take the following measures if you want to further suppress noises which affect the drive unit or
when there are devices nearby which are susceptible to noises (e.g. measuring instruments,
telephone lines, various sensors).
(1) When noises are expected from the drive unit signal cables
Fit data line filters to the signal cables.
(2) When there are devices nearby which are connected to the power supply whose line
is different from that of the drive unit
Run the signal cables of the device as far away as possible from the drive unit and its power
cable.
Avoid the parallel wiring and bundling of the device's signal cables and the drive unit's power
cable.
Connect a line noise filter to the input or output side of the drive unit's power cable.
Connect a radio noise filter to the input side of the drive unit's power cable.
Use shielded cables as the signal and power cables.
Run the signal and power cables in separate metal conduits.
(3) When there are devices which are connected to the power supply whose line is the
same as that of the drive unit
Connect a line noise filter to the input or output side of the drive unit's power cable.
Connect a radio noise filter to the input side of the drive unit's power cable.
NOTICE
The effects of the above noise suppression techniques depend on the propagation
paths of noises and the noise immunities of the devices.
Refer to: Chapter 6, 6.3 Noise Malfunctions and Measures