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The precautions required when installing a noise filter are described
below.
(1) Do not bundle the wires on the input side and output side of the
noise filter. When bundled, the output side noise will be induced
into the input side wires from which the noise was filtered.
(2) Earth the noise filter earthing terminal to the control cabinet with the
shortest wire possible (approx. 10 cm (3.94 in.)).
3.1.7 Power line for external power supply terminal
Use a CE-marked AC/DC power supply for an external power supply of
the modules, and the power cable length needs to be less than 30m
(98.43 ft.).*1
Install noise filters to external supply power terminals of the I/O module
and the modules below.
Use noise filters whose damping characteristic is equivalent to that of
the MA1206 produced by TDK Lambda Corporation.
• Analog-digital converter module
• Digital-analog converter module
• Analog I/O module
• Temperature input module
• Temperature control module
• Pulse input module
• High-speed counter module
• Positioning module
(a) The noise will be
included when the input
and output wires are
bundled.
(b) Separate and lay the input
and output wires.
*1 The power cable length for the A1SJ71E71N-B5 needs to be less
than 3m (9.84 ft.).
(power supply side)
Input side
(device side)
Output side
Filter
(power supply side)
Input side
(device side)
Output side
Induction
Filter
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