DURAG D-ISC 100 2 Series User Manual

4 | Installation and commissioning
D-ISC 100 x xx2
33
4.2.2 Notes on connecting data cables
● Data cables for the transfer terminals in the D‑ISC100:
shielded cables (e.g. LiHCH (TP) 8 x 2 x 0.5 mm²), twisted
pairs of fine-wire flexible cores, operational capacitance ap-
prox. 80 nF/km.
● Use the respective twisted pairs of cores (e.g. RS 485 A and
B, 4 … 20mA + and –) for the associated connections!
Cable lengths
Sensor connecting cable:
The maximum length of the pre-assembled connecting cable
between the D‑ISC100 and a sensor is 12m.
DURAG Modbus:
Please refer to the figures in Section 4.2.5 Sensor network bus
architecture (one D-ISC 100) [}41] and 4.2.6 Sensor network
bus architecture (multiple D-ISC 100) [}43]. A, B, C and D rep-
resent the cables for the A, B, C or D bus respectively. The total
length of all cables for a bus must not exceed a length of 1000m
(with 9600 Baud and AWG 26).
Stub cables, e.g. between the D-TB XXX and the measuring
head (not shown in the figures) are included in these cable
lengths.
A stub cable must be no longer than 20m. With n stub cables,
each individual stub cable must be no longer than 40m divided
by n.
Bus termination
● Enabling/Disabling the bus termination
● Terminating DURAG Modbus at both ends. To do so, activate
the termination at the devices at the ends of the bus
To carry out the bus termination, see also the information in the
operation manuals for the connected sensors.
Data cables
The DURAG Modbus data cables are connected via terminal X2
in the D-TB 100 and 200 and via terminal X2 or X6 in the
D‑ISC100 (see also Section 4.2.5 Sensor network bus architec-
ture (one D-ISC 100) [}41] and 4.2.6 Sensor network bus archi-
tecture (multiple D-ISC 100) [}43]).
As an alternative to direct wiring, the bus can be connected via
pre-assembled bus cables with M12 connectors. To do this, the
appropriate connectors for the housing installation will need to be
ordered together with the devices. The connectors will then be
fitted at the factory. Details on this can be found in Section 4.2.3
Electrical connection [}35].

DURAG D-ISC 100 2 Series Specifications

General

Brand	DURAG
Model	D-ISC 100 2 Series
Category	Control Unit
Language	English