Siemens SINAMICS G130 Operating Instructions Manual page 22

Connection
Note
Connectable voltage supply
Only a protective extra-low voltage of Class DVC A, (PELV) acc. to EN 61800-5-1 must be
connected to the power supply.
X540: serial interface (RS232)
Table 4- 2
Connector type: 9-pin SUB D socket
Note
Maximum cable lengths
The maximum cable length is 10 m.
To ensure noise-free communication, you are advised to use a shielded cable and connect
the cable shield to both connector housings.
NOTICE
Device damage caused by interchanged poles of the connected power supply
In the operator panel electronic circuitry, a connected cable shield may possibly be
connected to the signal and P24 ground. If the power supply is connected with incorrect
polarity, the P24 supply via the shield and signal ground will short-circuit. This can cause
device damage.
• Connect the correct poles of the power supply.
20
Serial interface (RS232) X540
Pin Designation
2
3
5 Ground
RxD Receive data
TxD Transmit data
Ground reference
Operating Instructions, 11/2017, A5E00331451A
Technical specifications
Advanced Operator Panel 30 (AOP30)