(3) Simultaneous Current/pulse Output
When using simultaneous analog/pulse output,
communication on the transmission line is restricted
by the wiring method.
Select the load resistance values while referring to
Table 4.1.
IMPORTANT
Absence of a load resistance for pulse output,
alarm output and status contact output may result
in equipment malfunction. Low resistance values
also may result in equipment malfunction. So, be
sure to provide resistance.
(4) Analog Input
Analog input is used for connecting with external
devices such as a 2-wire type transmitter that have
analog output.
The rated input range is 4 to 20 mA. For details on
wiring, see Table 4.1.
IMPORTANT
An input voltage exceeding 42 V may result
in equipment malfunction. An input current
exceeding 100 mA may result in equipment
malfunction. Be sure to wire so that the maximum
input voltage and current values are not exceeded.
4.2 Selection of Cables
The following should be taken into consideration
when selecting cables for use between the
transmitter and distributor.
(1) For wiring of cables, use 600V PVC insulated wire
or twisted wire or cable having equivalent or higher
performance.
(2) Use shielded cable at locations susceptible to
electrical noise. Furthermore, when wiring cables for
simultaneous analog/pulse output, individual 2-wire
shielded cable is sometimes necessary.
(3) At locations with high or low ambient temperatures,
use wires or cables suitable for the location of use.
(4) When using the vortex owmeter in atmospheres
where toxic gases and liquids, or oils and solvents
are present, use wires or cables made of materials
that can withstand use in these atmospheres.
(5) The outer diameter of the screw for the cable
terminal and the grounding terminal is 4mm.
(6) For wire and cable terminals, a crimping terminal
with an insulating sleeve (for 4mm screw) is
recommended.
IMPORTANT
To connect the remote sensor to the remote
transmitter, be sure to use the vortex owmeter
signal cable (VY1C).
<4. Wiring>
23
IM 01F07A01-01EN
Wiring
4
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