Azbil MagneW Plus+ NNK140/941, Руководство пользователя

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Azbil Corporation
22
MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
5 : Wiring
5-1 : Considerations on wiring
(a) Since the root of the 4-core cabtyre cable (including cores for signal and
excitation) is a watertight structure, do not pull them.
(b) The standard length of each cable of the detector is 10m. If the cable length
between a detector and a converter is over 10m, use a cable connection box
(Model No. NNZ 102-X-X)*. (See Figure 9.) Since the fluid conductivity of the
water and drain is over 100 mS/cm, the cable can be extended to a maximum
of 100m. * Optional (Model SMC 11-HC)
(c) Make sure that the cable between the detector and the converter is laid at a
place where it cannot be damaged.
(d) Screw the tightening gland into the wire connection port of the converter in
order to ensure airtightness between the cabtyle cable and the wire connection
port.
(e) Cable should be as far from a large current cable as possible, and they should
not be laid in parallel.
5-2 : Wiring
(a) Install the converter in a place where it will not be exposed to direct sunshine.
(b) If to be used for a flow running reverse to the flow direction marked on the
detector (See the arrows in Figure 7 and Figure 8.), reverse the white and black
signal lines (White - B, Black - A)
(c) Ground the detector using the grounding terminal (Figure 11) (ground
resistance needs to be less than 100
W
).
(d) Never short-circuit the exciting terminals (X,Y) of the converter. Do not connect
anything but a detector to the converter.