YOKOGAWA RC400G, User Manual

Page: 39 / 141

<3. Installation, Tubing and Wiring>
3-14
IM 12F4A1-01E
3.3.2 Wiring for Analog Output Signals
This is for transmitting output signals of 1 to 5 V DC or 4 to 20 mA DC by the respective range to
receives such as a recorder. Use a two-conductor shielded cable of 6 to 12 mm finished O.D..
When the analyzer is equipped with arrestors (when option code “/ARS” is specified), connect
terminals L1 and L2 to the power terminal box (a circuit breaker is incorporated).
Refer to Figures 3.5 to 3.7.
NOTE
For <remote> range switching, use a four-conductor (including this wiring) shielded cable.
Treat the cable at its end to be connected to the converter terminal in the following manner.
(1) Strip of the insulation covering of the cable at its end, approx. 60 mm, and solder a lead wire
to the base of the exposed shield.
Protect the soldered part by wrapping with insulation tape or other means.
(2) Cut the lead wire and each conductor to equal length and attach to the lead wire and
conductors tips crimping type terminal lugs which fit M4 screws.
(3) Connect the cable to + and - terminals of the converter. Connect the positive pole conductor
to the terminal OUTPUT at “+”, and the negative pole conductor to “-”, respectively.
Connect the lead wire of the shield to terminal G. (Do not double ground the shield
connected to terminal G at the receiver end.)
3.3.3 Wiring for Contact Input (<remote> Range Switching)
The two output ranges are switchable to each other arbitrarily. Range switching can be
performed either <remote> or <local>.
The wiring herewith described is provided for switching the range with <remote> (see subsection
5.3.4 (10)).
Use the remainder of the cable used for the analog output signal wiring described in subsection
3.3.2.
Connect the two conductors of the cable to terminals R1 and R2.
NOTE
When cable inlet ports are available, the wiring described above can be made with two separate
cables. For that, employ a two-conductor cable of 6 to 12 mm finished O.D.. Treat the cable end
in the same manner as the analog output signal cable.
Contact inputs ON (“Output range-2” is selected) and OFF (“Output range-1” is selected) are
identified by the resistance condition shown in Table 3.1. On wiring, ensure that a contact
meeting this condition is used.
Table 3.1 Identification of ON and OFF of Contact Input for <remote> Range Selection
Identification ON (Output range-2) Identification OFF (Output range-1)
Resistance (contact) 200 Ω or less 100 kΩ or more
14th Edition : Jul. 15, 2020