2 external device connections and grounding, Important, Toshiba – Toshiba LF470 User Manual
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TOSHIBA
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5.2 External Device Connections and Grounding
The connections for the LF470 detector are shown in Figure 5.1 and 5.2.
Proceed with wiring as described in Section 5.3, “Wiring Procedure.”
IMPORTANT
(1) The input signal cable and excitation cable are attached to the detector. Be sure to use the at
tached cable, check the specification of the detector.
(2) The converter side ends of the attached cables are covered with caps to prevent exposure to
humidity. Do not remove the caps from the cable until directly before wiring to the converter.
(3) Be sure to use thick walled steel conduit (22mm) for each the signal cable and the excitation
cable between the detector and the converter, and locate it as far as possible from other great
current cabling and it is not parallel with such cabling. Use flexible conduits at the cable outlets
of the detector.
(4) The FG terminal of the converter should be grounded with 100 ohm or less ground resistance.
Use a heavy copper braid or wire (cross-sectional area 5.5 mm^ minimum) to ground the termi
nal and make it as short as possible.
for Converter
/■—^\ r-S
Excitation cable
(Three-core chloroprene cabtyre cable)
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