YOKOGAWA EXAxt ZR22G, User Manual, Page: 83 / 211

<5. Wiring>
5-6
IM 11M12A01-02E 16th Edition : Mar. 19, 2020-00
Lock screw
Detector cover
F5-8E.ai
Figure 5.4
5.2.3 Power and Grounding Wiring
This wiring supplies power to the converter and grounds the converter/detector.
ZR402G
Converter
Jumper plate
L N G
ZR22G
Detector
Ground
100 - 240 V AC
50/60 Hz
Grounding to the ground terminal
on the converter case
Converter case
FG terminal Lock washer
Crimp-on terminal of
the ground wire
F5-10E.ai
Figure 5.5 Power and Grounding wiring
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 cable.
(2) The size of converter terminal screw threads is M4. Each cable should be terminated
corresponding to crimp-on terminals.
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 (equivalent JIS D style (Class 3)).
(2) When the ambient temperature of the wiring installation is 75 to 150 ° C for the wiring of the
detector, use wiring material with sufficient heat resistance.
(3) 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 5.5.).
(4) Ensure that the jumper plate is connected between the G terminal and the protective ground
terminal of the converter.