Transmission Cables - Panasonic FPS Series User Manual

Installation and Wiring

6.7.1 Transmission Cables

Please use the following cables for systems using RS485 type communication cassettes.
Type
Shielded twisted pair
4
3
VCTF
3
Cover
1
Insulator
2
Conductor
3
Shield
4
NOTE
•
Only use shielded twisted pair cables.
•
Only use one type of transmission cable. Do not mix more than one type.
•
Twisted pair cables are recommended in noisy environments.
•
When using shielded cable with crossover wiring for the RS485
transmission line, ground one end.
•
If two wires are connected to the plus and minus terminals of the RS485
port of FPG-COM4, use wires of the same cross-sectional area (0.5–
0.75mm
94
Conductor
Size
2
[mm ]
≥1.25
(AWG16)
1
≥0.5
2
(AWG20)
1
≥0.75
(AWG18)
2
2
).
Resistance (at
Material
20°C) [Ω/km]
≤16.8
Polyethylene
≤33.4
Polychlorinated
≤25.1
biphenyl
FPΣ User's Manual
Insulator
Thickness
[mm]
≤0.5
≤0.5
≤0.6
Cable
diameter
[mm]
≈8.5
≈7.8
≈6.6