X126 Profibus - Siemens SINAMICS S120 Manual

9.21.5

X126 PROFIBUS

Table 9- 35 X126 PROFIBUS interface
Connector 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.
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
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.
9.21 K90, Control Unit CU320-2 DP
Range
0 V
RS485
TTL
5 V ± 10%
24 V (20.4 ... 28.8 V)
RS485
Options
399