
RS-485
The RS-485 digital interface (2 leads / half duplex) is characterised by a very
high tolerance to electromagnetic interference due to the symmetrical signal
transmission. This means that cable lengths of up to 900m can be used. The
final device on a bus must be equipped with a 120 ohm resistor, in order to
avoid signal overlapping.
In order to avoid damage, only separate and connect the RS-485 cable if the
DULCO
®
turb C is switched off.
A0518
Fig. 4: Cable assignment of the sensor
I.
Power cable threaded connection
(supplied without power cable)
II.
Alarm cable threaded connection
III.
Sensor cable threaded connec‐
tion
1.
Terminal Alarm 1 and Alarm 2
(0.25 - 1.5 mm
2
) maximum 2
ampere
3.
Terminal box
4.
Liquid-tight threaded connection
5.
Sensor cable
6.
Terminal power cable (0.25 - 1.5
mm
2
)
Mounting and Installation
24
Содержание DULCO turb C Series
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