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<4. WIRING>
4-5
IM 11M03A02-00E
4.4 Power and Grounding Wiring
This wiring supplies power to the converter and grounds the converter/detector.
ZR402G
Converter
Jumper plate
L N G
ZO21DW
Detector
Ground
100 - 240VAC
50/60Hz
Grounding to the ground terminal
on the converter case
Converter case
FG terminal Lock washer
Crimp-on terminal of
the ground wire
F4.4E.ai
Figure 4.4 Power and Grounding wiring
4.4.1 Power Wiring
Connect the power wiring to the L and N terminals of the converter. Proceed as follows:
(1) Use a 2-core or a 3-core shielded cable.
(2) The size of converter terminal screw threads is M4. Each cable should be terminated
corresponding crimp-on terminals.
4.4.2 Grounding Wiring
The ground wiring of the detector should be connected to the ground terminal of the detector
case. The ground wiring of the converter should be connected to either the ground terminal of the
converter case or the protective ground terminal in the equipment. The grounding terminals of the
detector and the converter are of size M4. Proceed as follows:
(1) Keep ground resistance to 100 Ω or less.
(2) When connecting the ground wiring to the ground terminal of the converter case, be sure
that the lock washer is in contact with the case surface (see Figure 4.4.).
(3) Ensure that the jumper plate is connected between the G terminal and the protective ground
terminal of the converter.