Profibus Bus Terminator And Cable; Profibus Dp Bus Terminator; Profibus Cable Dp; Cable Connection Between Sensor And Evaluation Electronics (Remote Version) - ABB Sensyflow iG Operating Manual

5.5 PROFIBUS bus terminator and cable

To minimize line reflections and to ensure a defined steady level on the transmission line, the transmis-
sion line must be fitted with the following termination resistor combination at both ends.
5.5.1
Fig. 5-4 PROFIBUS DP bus terminator
The number in parenthesis correspond to the pin assignment at the 9-pole D-Sub connector.
5.5.2
The cables for the PROFIBUS connection must comply with the following parameters according to PRO-
FIBUS Specification EN50170 part 8-2:
Parameter
Note For safe functioning or to minimize line reflections and to establish a defined steady level, the PROFIBUS
network must be terminated (see PROFIBUS Termination Specification according to EN50170 Volume).
Stub lines should be avoided, as they may cause line reflections and malfunctions.
Note To ensure safe operation of the PROFIBUS communication you must take the PROFIBUS DP/FMS gui-
deline/installation into consideration.

5.6 Cable connection between sensor and evaluation electronics (remote version)

With the remote version you can use cables with a length up to 25 m between sensor and evaluation elec-
tronics. The connection is made via 10-pole, numbered terminal blocks that can be accessed after remo-
ving the covers at the sensor connection housing and the terminal box of the electronics unit. The
individual wires are wired 1:1 to the 10-pole terminal blocks in the sensor connection housing and at the
terminal box.
You can use a round data cable LIYCY 10 × 0.5 mm² with braided copper shield.
Note Ready-made cables can be ordered in lengths of 5, 15, and 25 m as accessories (see data sheet).
42/14-39 EN Sensyflow iG, Version 1.00

PROFIBUS DP bus terminator

Line type B (3)
Line type A (8)
DGND (5)

PROFIBUS cable DP

Surge impedance in Ω
Operating capacitance (pF/m)
Loop impedance (Ω/km)
Solid wire
Stranded wire
VP (6)
DP, line type A, shielded
135...165 at a frequency of 3...20 MHz
30
≤ 110
AWG 22/1
> 0.32 mm²
Electrical installation
390 ohms
220 ohms
390 ohms
19