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Figure 10 - Surge Absorber - Honeywell 2MLL-PSRA User Manual

Pnet i/f module.
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Do not place the 24V DC power cable close to the main circuit or to the I/O
signal cable. They should be placed at least 80mm away from each other.
Use the surge absorber to prevent the lightning as shown in the figure below.
Use the insulated transformer or the noise filter.
In case of the wiring, each input resource, the wiring of the insulated transformer
or the noise filter is not allowed to pass the wiring duct.
I/O Device Wiring
For I/O wiring, it is recommended to use 0.5mm² cable, even though the
specification is 0.18~2 mm².
Input cable and output cable should be separated for wiring.
While wiring, maintain a distance of 80mm between the I/O signal cable and the
high-voltage, high-current main circuit cable.
To separate the main circuit cable and the power cable, you should use the
shielded cable, and earth the PLC.
Pnet I/F Module 2MLL-PSRA, 2MLL-PSEA User's Guide
November 2011
Figure 10 – Surge absorber
Separate the earth (E1) of the surge absorber for lightning and the earth
(E2) of PLC.
Select the surge absorber for lightning so that it does not exceed
maximum allowable voltage of the absorber even when the power
voltage is raising maximum.
3. Installation and wiring
3.2. Wiring


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