
INFORMATION: The RS-485 digital interface (2 lines/half-duplex)
is characterised by a very high tolerance to electromagnetic inter‐
ference due to the symmetrical signal transmission. This means
that cable lengths of up to 900 metres can be used. The final
device in a bus must be equipped with a 120 Ohm resistor to avoid
signal overlapping. To avoid damage, only disconnect and connect
the cables of the RS-485 interface when the DULCO turb C is
switched off.
A3409
1.
2.
3.
Fig. 4: Cable assignment of the DULCO turb C
1. Sensor cable
2. Liquid-tight threaded connector
3. Terminal box
Assembly and installation
19