Wiring And Piping; Before Wiring - Fuji Electric ZKME Instruction Manual

CAUTION
: Wiring work must be carried out with all power supplies turned off. Otherwise electric
shock may result.
: Be sure to ground the Converter. (Class D grounding)
(1) Power voltage for the converter must conform to that for the detector to be connected.
(2) Power supply wiring
 Use 1.25sq 600V vinyl insulated cable (JISC3307) or equivalent as power supply cable.
 Use the main ground wire longer than the L1 and L2 lines.
 Fix the part of the AC cable sheath that is more inner than the cord bushing by 3 mm or more.
 Use a solderless terminal for the end of the AC cable. For the main ground wire, use the solderless
terminal whose core wire and sheath are caulked separately (double caulking).
 Connect the ground wire to the following:
M4 screw / round terminal of the main ground wire / tooth lock washer / casing
(3) For the reason of protection against injury, as necessary, provide adequate protection of the dedicated
cables (4-core signal cable and 2-core heater cable), which connect the detector and converter, and
power cable using wire protection tube, etc. Separate the signal cable from the power cable (noise
prevention).
(4) Install the signal cable as far as possible (30cm or more) from the heavy current lines to prevent
induced noise. Also, always ground a shield.
Note) For connection of the lines to the external terminals, use of ring crimp solderless terminal
with insulation sleeve is recommended.
(5) In the case of wiring work at the zone 1, take an appropriate prevention countermeasure against gas
flow to prevent explosive gas being flown into the zone 2 or unclassified area through a kind of duct
or protection tube. When connecting 2 cables, and connecting a cable and a cable covered with metal
tube for flameproof, use a flameproof-structured box.
INZ-TN1ZKME-E

4. WIRING AND PIPING

4.1 Before wiring

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