Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 61)

<5. Wiring>
5-4
IM 11M12A01-04E
5.3 Wiring Power and Ground Terminals
Wiring for supplying power to the analyzer and grounding the equipment.
1 2 C DO DO
DI DI
1 2
L N FG + - AO
~
100~240VAC
50/60Hz F5.5E.ai
Jumper plate
Grounding to the earth terminal
on the equipment case
Equipment case
Lock washer
Crimp contact of
the grounding line
Grounding
terminal
Ground
FG G
Figure 5.5 Power and Grounding Wiring
5.3.1 Wiring for Power Line
Connect the power wiring to the L and N terminals of the equipment. For a three-core cable, ground
one core appropriately. Proceed as follows:
(1) Use a two-core or three-core cable.
(2) M4 screws are used for the terminals. Use crimp-on terminals appropriate for M4 terminal
screws for cable connections.
5.3.2 Wiring for Ground Terminals
The ground wiring of the analyzer should be connected to either the ground terminal of the equipment
case or the terminal inside of the equipment. Proceed as follows:
(1) Keep the ground resistance of 100Ω or less (JIS Class D grounding).
(2) When connecting the ground wiring to the ground terminal of the equipment case, be sure that
the lock washer is in contact with the case surface (see Figure 5.5.).
(3) Ensure that the jumper plate is connected between the G terminal and the FG terminal of the
equipment.
(4) The size of external ground screw thread is M4. Each cable should be terminated corresponding
crimp-on terminals.