Watlow CAS200 Bedienungsanleitung Seite 27

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CAS200 User’s Guide Chapter 2: Installation
Watlow Anafaze 15
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CAUTION! Do not wire bundles of low-voltage signal and
control circuits next to bundles of high-voltage ac
wiring. High voltage may be inductively coupled
onto the low-voltage circuits, which may damage
the scanner or induce noise and cause poor
control.
Physically separate high-voltage circuits from
low-voltage circuits and from CAS200 hardware.
If possible, install high-voltage ac power circuits
in a separate panel.
Wiring Recommendations
Follow these guidelines for selecting wires and cables:
Use stranded wire. (Solid wire can be used for fixed
service; it makes intermittent connections when you
move it for maintenance.)
Use 20 AWG (0.5 mm
2
) thermocouple extension wire.
Larger or smaller sizes may be difficult to install, may
break easily, or may cause intermittent connections.
Use shielded wire. The electrical shield protects the
signals and the CAS200 from electrical noise. Connect
one end of the input and output wiring shield to earth
ground.
Use copper wire for all connections other than
thermocouple sensor inputs.
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