Camille Bauer KINAX SR709 Betriebsanleitung Seite 16

6. Electrical connections
Non-electrically insulated 2, 3 or 4-wire connection
Jumper
–
R
ext
+
–
+
A and H
2-wire connection
(4 ... 20 mA)
+
R
ext
–
+ –
A H
4-wire connection
(different mA-signals)
4-wire connection and electrically insulated AC/DC power
supply
+
R
ext
–
+ ~ – ~
A H
4-wire connection
(different mA-signals)
16
+
R
ext
–
– +
A H
3-wire connection
(different mA-signals)
A = Measuring output
as 2-wire connection
(4...20 mA, signal in
output/powering)
as 3 or 4-wire
connection (different
mA-signals)
H = DC power supply
H = 12 ... 33 V
resp. H = 12 ... 30 V
with Ex version
R = External resistance
ext
A = Measuring output
H = AC/DC power supply
R = External resistance
ext
Operating Instructions SR709 Be – 03.13
Note that, ...
... the data required to carry out the prescribed meas-
urement must correspond to those marked on the
nameplate of the KINAX 3W2 (Range, Output, Supply
voltage)!
... the total loop resistance connected to the output
(receiver plus leads) does not exceed the maximum
permissible value R
Section "5. Technical data" for the maximum values
of R !
ext
... twisted cores must be use for the measured variable
input and output leads and routed as far away as
possible from power cables!
In all other respects, observe all local regulations when
selecting the type of electrical cable and installing them!
In the case of "Intrinsically safe" explosion-proof versions
with I.S. measuring output, the supplementary informa-
tion given on the Ex approval and also local regulations
applicable to electrical installations in explosion hazard
areas must be taken into account!
7. Settings
Transmitter with Ordering Code 709 – ..D (see «Table 2: Speci-
fi cation and ordering information") can be used for a 2-wire con-
nection and an output current of 4...20 mA or for 3 and 4-wire
connections and an output current of 0...20 mA.
If the mode of connection is changed (see "6. Electrical connec-
tions»), the beginning and end of the measuring range, i.e. ZERO
and SPAN, have to be recalibrated.
Zero
Fig. 9. Locations of the settings.
ZERO = Potentiometer for zero point
SPAN = Potentiometer for full-scale measuring range
S1 = Not fi tted
This Section concerns the fi ne adjustment not only of the begin-
ning of the range (ZERO), but also of the end of the scale (SPAN).
Firstly, switch on the power supply to the transmitter.
Remove the ZERO/SPAN sealing plug (4) (Fig. 10, left). Place the
measured device at its zero position, i.e. the position at which the
KINAX 3W2 should produce 0 mA (3- or 4-wire connection) resp.
4 mA (2-wire connection) at its output.
Then adjust the "ZERO" potentiometer (Fig. 10, right) using a
watchmaker's screwdriver (2.3 mm diam.) so that the desired
output current fl ows.
! See "Measuring output" in
ext.
Span
S1
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