Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 142)

<2. Installation, Piping, and Wiring>
2-25
IM 11B08A01-01E
Screw
for
Ground
Figure 2.21 Earth terminal for the GC8000
2.3.5 Connecting Signal Cables
CAUTION
Be sure to keep the power and signal cables apart. Avoid placing them in parallel.
NOTE
• For analog input, use twisted pair cables with a common shield (a twist pitch of 50 mm or
less), to avoid induction noise.
Use twisted pair cables for digital signals as well.
• Stranded cables are superior to single-conductor cables in the following respects:
• Stranded cables are more fl exible and easy to lay in a curved pit or cramped space.
• Stranded cables provide better contact with crimp-on terminal, with less aging over time.
• Secure the cables so they do not weight on the terminals.
• Fasten the terminal screws securely.
 Signal Cable Termination
CAUTION
• Use crimp-on terminal with insulated covering.
• Wire crimp-on terminal with the dedicated tool.
• The tool must be suitable for the size of wires.
Use crimp-on terminal for all signal cables.
The specifi cations of the crimp-on terminal are determined by the nominal cross sectional area of
the power cable.
2nd Edition : May 11, 2012-00
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