Chino LE5100, Инструкция по эксплуатации

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4-2
4-3 Connections of each terminal board
4-3-1 Measuring input terminal board
Cautions
1. Connect a voltage lower than the allowable input voltage to the input terminals.
① Voltage, thermocouple input ---------

10VDC
②
Resistance thermometer bulb -------

6VDC
2. Turn off the feed power source before starting connections for preventing an electric shock accident.
3. Mount crimp style terminals each having an insulation sleeve as input terminals.
4. For a DC voltage (current) input, use a twisted wire for instrumentation as a noise preventive measure. Connect a
current input receiving resistor to the channel to be measured before connecting the current input.
5. Connect the thermocouple input by using the thermocouple wire (or compensation lead wire) to the unit without fail.
If a copper wire is connected halfway, a noticeable error occurs. Don’t connect a part of thermocouple wires in
parallel with other instruments (a controller or the like), otherwise a trouble may occur.
6. For connecting the resistance thermometer bulb input, use a 3-conductor cord having an equal resistance value of
each conductor wire. Don’t connect a resistance thermometer bulb in parallel with any other instrument (a
controller or the like)
7. A high voltage may be applied to the measuring input terminals due to common mode noises. The allowable value
of noises is lower than 30VAC or 60VDC. Make sure that noises are lower than specified. After connecting
terminals, mount a terminal cover for preventing an electric shock accident and also protecting the input wires. In
case of the thermocouple input, a reference junction compensation error is reduced by mounting the terminal
cover.
4-3-2 Power terminals
Cautions
1. Turn off the feed power source without fail before connecting the power terminals and protective conductor
terminals for the purpose of preventing an electric shock accident.
2. The power voltage of this unit is indicated at the power terminal block. If a voltage other than indicated should be
applied, a trouble or an operation failure occurs. If power noises are introduced, take a preventive measure by
connecting a noise cutting transformer to the ground or other preventive means.
3. A 100
－
240V AC voltage is applied to the power terminals after connections. Mount the power terminal cover
without fail after connections for preventing an electric shock accident.
Terminal cover mounting screw
(at 2 upper and lower places)
ＣＨ１
ＣＨ１２
Resistance
thermometer
bulb
V
oltage
Thermo-
couple
Contact
Power cable :
600V vinyl insulated wire
Crimp style terminal having an
insulation sleeve.
Note:
Use the following standard
cords
① - ③ .
①ＩＥＣ ２２７－３
②ＡＮＳＩ／ＵＬ８１７
③ＣＳＡ Ｃ２２．２ Ｎｏ．２１／４
Grounding wire:
Connect to the protective conductor of the power supply
equipment.
Crimp style terminal having an insulation sleeve
A copper cable each having a wire diameter of 2mm
2
at least
Green/yellow
Power terminal cover