YOKOGAWA EXA TB TB400G, Руководство пользователя

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<3. INSTALLATION, PIPING, AND WIRING>
3-9
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
3.3.4 Contact Input and Contact Output (Range Output) Wiring
As output ranges, three types of ranges can be set, and output can be obtained by freely
switching these ranges. The output range selection is “remote”, “local” or “auto” mode.
This wiring is applied if the range is changed in “remote” mode (see Section 6.6 (12)) or the range
contact output is used.
Use a 2-conductor cable of finished ø6 to ø 12 mm for the wiring. However, use a 3-conductor
cable when remote range selection only is used and a 4-conductor cable when only range
contact output is used.
The on and off contact statues are identified with the resistance value conditions shown in Table
3.1. In doing wiring, confirm that a contact meeting these conditions is used.
Table 3.1 On/off Identification of Contact Input for Switching “Remote” Range
On status identification Off status identification
Resistance value (contact) 200Ω or less 100 kΩ or more
The cable end-treatment procedure and connection procedure on the converter connection side
are shown below.
(1) Strip off about 40 mm of the cable insulation covering from the end and attach suitable
terminal lugs fitted to M4 (4 mm) screws to the tip of each conductor.
(2) Connect the cable conductors to “remote” range selection terminals R1, R2, and R3 and
range contact output terminals A1, A2, A3 and S4.
“Remote” range switching on/off contact input is performed between terminals R1 and R2, and
between terminals R1 and R3 (See figure 3.8). The relationship between the on/off contact input
and the output range is as shown in Table 3.2.
R1
R2
R3
F0308.ai
Figure 3.8 Remote Range Switching Contact Input
Table 3.2 Contact Input and Output Range
R1-R2 R1-R3 Output range
OFF OFF RANGE 1
ON OFF RANGE 2
OFF ON RANGE 3
The range contacts can be output as in Figure 3.9.
A1
A2
A3
A4
COM
RANGE 1
RANGE 2
RANGE 3
F0309.ai
Figure 3.9 Range Contact Output