YOKOGAWA CM6G, Руководство пользователя

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<2. Installation, Piping, Wiring>
2-5
IM 11R02A01-02E 5th Edition : Dec. 28, 2016-00
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Notes on Wiring
• Turn off all power supplies while connecting cables and wires.
• An electrical wiring duct must not be used for the simultaneous connection of a large
capacity converter, motor, or power supply.
• When cables are connected in a place with high or low ambient temperatures, use cables
suitable for the place.
• The material of cables must be capable of withstanding harmful gases, lizids, oil , or
solvents when cables are used in the atmosphere where these harmful substances are
present.
• Use crimp terminals with insulated sleeve (M4 screws) for the wire ends.
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Wiring to Peripheral Equipment
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Power Supply
Use a 600 V insulated vinyl cabtyre cable (JIS C3312) with a cross-section area of 2 mm 2 or
more, or a wire or cable that is the equivalent or better.
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Grounding
Connect a grounding wire to the grounding terminal inside the panel. A grounding wire must be
connected so that the grounding resistance becomes 100 Ω or less (equivalent to JIS Class D).
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Analog Output (4 to 20 mA DC)
Use a shielded twisted pair cable with a cross-section area of 0.5 mm 2 or more, or a cable that is
the equivalent or better, and install it separately from the power supply and alarm output cables
and sources of electromagnetic interference. A shielded cable must be connected to the frame
ground (FG) beside each of the output terminals. The load resistance from the perspective of this
equipment must be 750 Ω or less.
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Contact Output
Use a 600 V insulated vinyl cabtyre cable (JIS C3312) with a cross-section area of 2 mm
2
or
more, or a wire or cable that is the equivalent or better.
The flame extinction alarm contact and orifice chamber temperature drop alarm contact must be
non-voltage dry contacts and the contact rating must be as follows.(when contact is opened, the
leakage current is 2 mA or less (100V AC))
Contact Rating
Flame distinction alarm contact 100 V AC 5 A
Orifice chamber temperature drop alarm contact 100 V AC 3 A
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Contact Input (Remote Ignition: Made to order)
Input a non-voltage contact as a contact input signal. The contact rating is 24 V DC 1 A. The
open or closed state of the input is determined by the resistance value from the perspective of
this equipment. The resistance value also includes the wiring resistance.
Contact closed: 200 Ω or less.
Contact open: 100 kΩ or more.