YOKOGAWA EXAxt ZR402G, User Manual

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<5. Wiring>
5-5
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
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.
5.4 Wiring for Contact Output
The equipment can output a maximum of two contact signals. These contact outputs can be used
for different applications such as a low alarm or high alarm.
Do the contact output wiring according to the following requirements.
DO-1
DO-1
DO-2
DO-2
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#2 Output
Analyzer
Terminal box
Annunciator or the like
#1 Output
Figure 5.6 Contact Output Wiring
5.4.1 Cable Specifications
The number of cores varies depending on the number of contacts used.
5.4.2 Wiring Procedure
(1) M4 screws are used for the terminals. Use crimp-on terminals appropriate for M4 terminal
screws for cable connections.
(2) The contact output relays are rated 30 V DC 3A, 250 V AC 3A. Connect a load (e.g. pilot
lamp and annunciator) within these limits.
5.5 Wiring for Contact Input
The converter can execute specified function when receiving contact signals.
To use these contact signals, proceed wiring as follows:
Converter Terminal box
DI-1
DI-C
DI-2
Contact input 1
Contact input 2
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Figure 5.7 Contact Input Wiring