Eaton XV300 Series - Profibus Interface Details

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
9-pole
PIN Signal Description
1
n.c.
not assigned
2
n.c.
not assigned
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 assigned
8
A
EIA RS 485 cable A
9
n.c.
not assigned
Table18:PinassignmentforProfibusDP,notgalvanicallyisolated,SUB-Dsocket9-pole,
UNCnutsforinterlockingPROFIBUSinterface
n.c.:PIN1,2,7and9mustnotbeconnected.
PIN 6 (5 V) must not be used as a power supply for external devices.
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)
must be used.
Cable specifications



Rated cable impedance


150 Ohm
Permissible 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 maximum 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
400 m
500 kBit/s
1000 m
187.5 kBit/s
1200 m
≤ 93.75 kBit/s
Table19:SpecificationsforProfibuswiring
Whenpreparingconnections,ensurethatthecableshieldhasalow
impedanceconnectionwiththeconnectorhousing.
XV30012/15 MN048017 ENwww.eaton.eu
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