RayTek MARATHON FA - Page 28

Installation
20 MarathonSeriesFA/FR
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Figure15:ElectronicsHousingWiring
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Incorrectwiringcandamagethesensorandvoidthewarranty!Beforeapplyingpower,
makesureallconnectionsarecorrectandsecure!
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Thefollowingfigureillustrateshowtoremovetheterminalblock.
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Figure16:RemovingtheTerminalBlock
Theelectronicsboxhastwocompressionfittingstoprovidewatersealingforthefiberopticscableand
theelectronicscable.Thecompressionfittingmustbetightenedwithawrencharoundthecablesto
achieve water sealing. To achieve sealing for the fiber optics cable,
hand tighten the compression
fittingaroundthecable,andthenuseawrenchtotightenanother11/2to2turns.Ifthecableistoo
thinthenitmaybenecessarytoaddabushingorheatshrinkmaterialtoincreasethecablediameterin
ordertoensuresealing.Hand
tightenthecompressionfittingaroundthecable,andthenuseawrench
totightenanother1½to2turns.
4- wire cable 12-wire cable
Cable compression
fitting or conduit adapter
Cable compression
fitting or conduit adapter
+mA (green)
-mA (brown)
NO/NC (blue)
COM (orange)
TRIG (yellow)
SHIELD (bare)
+mA (green)
-mA (white)
+24V (red)
GND (black)
TxA (purple)
TxB (grey)
RxA (black)
RxB (white)
+24V (red)
GND (black)
twisted cable pairs
Attention: Do not confuse twisted
pair black wire with single black
power wire