AUMA Aumatic AC 01.1 Operation Instructions

7.5.3 Bus cables Only cables according to standard DIN 19245 or EN 50170-2, cable type A,
may be used for Profibus DP wiring.
A maximum of up to 32 Profibus devices may be connected in one segment.
If more devices are to be connected to one Profibus network, several
segments must be connected with repeaters.
The bus cable must be laid at a distance of at least 20 cm from other
cables. It should be laid in a separate, conductive and earthed cable
trunking.
It must be ensured that there are no potential differences between the indi
-
vidual devices on the Profibus (Perform a potential compensation).
Cable specification cable type A for Profibus DP
Impedance: 135 to 165 Ohm, at a frequency
of 3 to 20 MHz.
Cable capacity: < 30 pF per metre
Cable diameter > 0.64mm
Cross section: > 0.34 mm², corresponds to AWG 22
Loop resistance: 110 Ohm per km
Screening: CU shielding braid or shielding braid and
shielding foil
Actuator controls AUMATIC AC 01.1 / ACExC 01.1
Operation instructions Profibus DP
17
Transmission speed
in kBit/s
≤ 93,75
187.5 500 1500
Maximum segment length
in m
1200 1000 400 200
Table 6
2-wire cable
Controls (master)
Figure E: Example: Profibus with one segment
Bus termination
switched on
Bus termination
switched on
Connection
board
Profibus DP board
AUMATIC
Profibus DP

AUMA Aumatic AC 01.1 Specifications

General

Brand	AUMA
Model	Aumatic AC 01.1
Category	Control Unit
Language	English