YOKOGAWA TB400G-A1 Series, User Manual, Page: 45 / 140

<3. INSTALLATION, PIPING, AND WIRING>
3-6
IM 12E04A02-02E
3.3.1 Power and Grounding Wiring
[Power Wiring]
This is the wiring to supply power, conforming to the frequency and voltage speci fi cations, to the
converter. Connect converter terminals L1 and L2 to the power supply.
Use a two-conductor cable having a
fi nished OD of 6 to 12 mm for the power wiring.
The cable end-treatment procedure for the end to be connected to the converter is described in
the following:
(1) Strip off about 80 mm of the cable insulation covering from the end.
(2) Attach clamp terminal lugs
fi tted to M4 (4 mm) screws to the tips of the conductors.
[Grounding Wiring]
Do the grounding wiring using the grounding terminal at the bottom of the converter case.
As the grounding terminal is for an M5 (5 mm) screw, connect a grounding conductor whose
end is end-treated (obtaining suf fi cient continuity) and do the grounding (JIS class D, grounding
resistance of 100 ohms or less).
Note: If grounding cannot be done using the ground terminal of the converter case, connect
the grounding conductor to terminal G (M4 (4 mm) screw) within the converter and ground the
conductor on the power supply side. In this case, use 3-conductor or 2-conductor shielded cables
for the power and grounding wiring.
3.3.2 Analog Output Wiring
This is the wiring for transmitting a 1 to 5 V DC or 4 to 20 mA DC output signal corresponding
to the output range to a receiving instrument such as a recorder. For Wiring, use a 2-conductor
shielded cable of fi nished OD 6 to 12 mm.
The cable end-treatment procedure and connection procedure on the connecting side to the
converter are shown below.
(1) Strip off about 40 mm of the insulation covering and shield from the cable end and solder a
leadwire to the root of the exposed shield. Protect the soldered part with wound a insulation
tape.
(2) Make the soldered leadwire length almost the same as other conductor lengths and attach
crimp terminal lugs conforming to as M4 (4 mm) screw to the tips of each conductor and this
leadwire.
(3) Connect the cable to the converter ter and -. Connect the plus pole conductor to
the OUTPUT “+” terminal and the minus pole conductor to the OUTPUT “-” terminal. Also,
connect the leadwire of the shield to terminal G. (Do not ground the shield on the receiving
side.)
3.3.3 Digital Output Wiring
This is the wiring for outputting turbidity signals and generated failure details as digital signals
(through RS-232C). For details of speci fi cations and transmission, see Section 2.1, “Standard
Speci fi cations”.
For wiring, use a 3-conductor shield cable of fi nished OD 6 to 12 mm. Limit the cable length up
10 m.
The cable end-treatment procedure and connection procedure on the connecting side to the
converter are shown below.
(1) Strip off about 40 mm of the insulation covering and shield from the cable end and solder a
leadwire to the root of the exposed shield. Protect the soldered part with wound insulation
tape.
3rd Edition : May. 31, 2010-00