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3.1.4 Power supply module
The precautions required for each power supply module are described below.
Always observe the items noted as precautions.
Model Precautions
A1S61PN, A1S62PN
Make sure to short and ground the LG and FG
terminals.
2
A1S63P 1
Use the 24VDC panel power equipment conforming to
the EU Directive.
1: If sufficient filter circuitry is built into the 24 VDC external power supply
module, the noise generated by A1S63P will be absorbed by that filter
circuit, so a line filter may not be required.
Filtering circuitry of version F or later of A1S63P is improved so that a
external line filter is not required.
2: To ensure the compliance with CE (EN6111-21/A11), make sure to short
the LG and FG terminals using a wire of 6 to 7cm.
3.1.5 Base unit
The following table shows models of base units that are compatible with EMC
instructions.
Type Model name Applicability
A1S38HBEU Applicable
Main base unit
A1S3
B, A1S38HB Not applicable
Extension base unit A1S5 B(S1), A1S6 B(S1) Applicable
3.1.6 Ferrite core
Use of ferrite cores is effective in reducing the conduction noise in the band of
about 10 MHz and radiated noise in 30 to 100 MHz band.
It is recommended to attach ferrite cores when the shield of the shielded cable
coming out of control panel does not work effectively, or when emission of the
conduction noise from the power line has to be suppressed.*1 The ferrite cores
used in our tests are TDK's ZCAT3035.
It should be noted that the ferrite cores should be fitted to the cables in the
position immediately before they are pulled out of the enclosure. If the fitting
position is improper, the ferrite will not produce any effect.
1:To response with CE (EN61131-2/A12), make sure to mount 2 or more
ferrite cores onto the power supply line. The mounting position should be
as near the power supply module as possible.
Ferrite core
Type: ZCAT2235-1030A (TDK ferrite core)
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