Eaton XV300 - PROFIBUS Interface; PROFIBUS Wiring and Specifications

5. External connections
5.7 PROFIBUS interface
5.7 PROFIBUS interface
The Profibus-DP-- interface is not electrically isolated.
CAUTION
NON-GALVANICALLY-ISOLATED INTERFACES
The XV300 may be damaged by potential differences.
The GND terminals of all bus modules must be connected.
Do not connect the connector to the XV300 or disconnect it without
first de-energizing the system.
SUB-D socket PIN signal Meaning
9 pole
1
2
3
4
5
6
9
8
7
1
n.c.
not used
2
n.c.
not used
3
B
EIA RS 485 cable B
4
RTSAS
Output for controlling a repeater
5
M5EXT (GND)
Output 0 V for external termination (Ground)
6
P5EXT
Output 5 V for external termination
7
n.c.
not used
8
A
EIA RS 485 cable A
9
n.c.
not used
Table 20: Pin assignment for Profibus DP, not galvanically isolated, SUB-D socket 9-pole, UNC nuts for interlocking
PROFIBUS interface
PIN 6 (5 V) must not be used as a power supply for external devices.
nc: PIN 1, 2, 7 and 9 must not be connected.
5.7.0.1 Wiring
l Screened twisted-pair cables must be used.
l Cable type A (as specified in Profibus standards IEC/EN 61158 and IEC/EN 61784)
Cable specifications



Rated surge impedance


150 Ohm
Permissible surge impedance


135 … 165 Ohm
Capacitance per unit length


< 30 pF/m
Loop resistance


< 100 Ohm/km
Core cross-section


≥ 0.34 mm
2
(22 AWG)
The maximal baud rate depends on the cable length
Possible baud rates
With a max. cable length of
100 m
12000 kBit/s (12MBit/s)
200 m
1500 kBit/s (= default settings)
400 m
500 kBit/s (= default settings)
1000 m
187.5 kBit/s (= default settings)
1200 m
≤ 93.75 kBit/s
Table 21: Specifications for Profibus wiring
When preparing connections, ensure that the cable shield has a low
impedance connection with the connector housing.
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XV30004/19 MN048017ENwww.eaton.eu