X126 Profibus - Siemens SINAMICS S120 Manual

Options
9.19 K90, Control Unit CU320-2 DP
9.19.5

X126 PROFIBUS

Table 9- 31 X126 PROFIBUS interface
Pin
1
2
3
4
5
6
7
8
9
Connector type: 9-pin Sub-D socket
NOTICE
Damage to the Control Unit or other PROFIBUS nodes due to high leakage currents
Significant leakage currents can flow along the PROFIBUS cable if a suitable equipotential
bonding conductor is not used and destroy the Control Unit or other PROFIBUS nodes.
• An equipotential bonding conductor with a cross-section of at least 25 mm² must be
NOTICE
Damage to the Control Unit or other CAN bus nodes due to the connection of a CAN cable
If a CAN cable is connected to the X126 interface, this can destroy the Control Unit or other
CAN bus nodes.
• Do not connect any CAN cables to the X126 interface.
Note
Remote diagnostics
A teleservice adapter can be connected to the PROFIBUS interface (X126) for remote
diagnostics.
The power supply for the teleservice (terminals 2 and 7) can have a max. load of 150 mA.
PROFIBUS connectors
The first and last nodes in a bus must contain terminating resistors. Otherwise, data
transmission will not function correctly.
The bus terminating resistors are activated in the connector.
The cable shield must be connected at both ends and over a large surface area.
350
Signal name Meaning
- Not assigned
M24_SERV Teleservice supply, ground
RxD / TxD–P Receive/transmit data P (B)
CNTR–P Control signal
DGND PROFIBUS data reference potential
VP Supply voltage plus
P24_SERV Teleservice supply, + (24 V)
RxD / TxD–N Receive/transmit data N (A)
- Not assigned
used between components in a system that are located at a distance from each other.
Range
0 V
RS485
TTL
5 V ± 10%
24 V (20.4 V to 28.8 V)
RS485
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A