Toa N-8400RS - Manuel (Page 13)

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6.4. removable Terminal Plug connection
Step 1. Strip a cable jacket of approx. 7 mm to expose inner cable.
Step 2. Loosen the terminal screws and insert the cables.
Step 3. Tighten the terminal screws securely.
Notes
• Tug lightly on the cable to be sure that it does not pull free. If the cable pulls free, loosen the terminal
screw again and reconnect from Step 2.
• Use the screwdriver appropriate to the screws tightened into the terminal plug.
7 mm
For cables, refer to above "Type of Cable."
Note
Do not solder on exposed inner cables when using a stranded wire.
6.2. Type of cable
The types of cables are to be determined according to the following conditions.
• UTP Category 5 straight through cable with RJ45 connectors is to be used for connecting to IP network.
• The number of cables pairs laid should be determined considering the possibility of future expansion of the
system.
• Outdoor wires should be used where wiring passes through inaccessible areas such as attics or under floors
where the maintenance is not performed. Indoor wires may also be used, however, in case where there is no
risk of deterioration due to exposure to heat, etc.
• Make sure that the two pairs of twisted pair cables are used for wiring from the substation interface unit to the
substation (RS-450, RS-460, RS-470, and RS-480).
Note
Specifications related to connections are as follows.
Removable terminal plug (N-8400RS line terminal)
Conductor diameter: ø 0.5 – 2 mm (AWG12 – 24), Solid wire/Stranded wire
Clip terminal (E-7000TB)
Conductor diameter: ø 0.4 – 0.8 mm (AWG20 – 26), Solid wire
Outside diameter: ø 0.5 mm or below
6.3. relations between core Diameter of cable and Maximum cable Length
For the maximum (two pairs of twisted pair) cable length between the substation interface unit and the substation
(RS-450, RS-460, RS-470, and RS-480), refer to the following table.
Conductor diameter
(mm)
Maximum cable length
(km)
ш 0.5 1.0
ш 0.65 1.5
ш 0.9 2.0