2.4 Optional Terminal Wiring

General Precautions to be Taken While Wiring the Input/Output Signal Wires

WARNING

To prevent electric shock while wiring, ensure that the power supply source is turned OFF.

If a voltage of more than 30 VAC or 60 VDC is to be applied to the output terminals, use ring-tongue crimp-on lugs with insulation sleeves on all terminals to prevent the wires from slipping out when the screws become loose. Furthermore, use double-insulated wires (dielectric strength of 2300 VAC or more) for the signal wires on which a voltage of more than 30 VAC or 60 VDC is to be applied. For all other wires, use basic insulated wires (dielectric strength of 1390 VAC). To prevent electric shock, attach the terminal cover after wiring and make sure not to touch the terminals.

Crimp-on lug with insulation sleeves (for 4 mm screws)

CAUTION

To prevent fire, use signal wires having a temperature rating of 70°C or more.

If a strong tension is applied to the cable wired to the recorder, the terminals of the recorder and/or the cable can be damaged. In order to prevent tension from being applied directly on the terminals, fasten all wiring cables to the rear of the mounting panel.

Arrangement of the Optional Terminals

As shown in the figure below, the optional terminal block is located on the rear panel. The optional terminal block is provided on the recorder when an option that requires input/output is installed such as the alarm output relay (/A1, /A2, or /A3 option), FAIL/ chart end output (/F1 option), and remote control function (/R1 option). A terminal cover is screwed in place on the optional terminal block. A label indicating the terminal arrangement is affixed to the terminal block.

Optional terminal block

Terminal cover attachment screws

2

Before Using the Recorder

2-9

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Omega RD100B manual Optional Terminal Wiring, Arrangement of the Optional Terminals, Optional terminal block