3 wiring power and ground terminals, 1 wiring for power line, 2 wiring for ground terminals – Yokogawa Integral Oxygen Analyzer ZR202 User Manual

Page 61: Wiring power and ground terminals -4 5.3.1, Wiring for power line -4, Wiring for ground terminals -4

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<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.

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