Siemens Sinamics Connect Series, Руководство по эксплуатации, Страница: 36 / 101

Connecting
4.2 Connecting the converter to the device
SINAMICS CONNECT
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Operating Instructions, 10/2018, A5E45421408
Interface assignment (device side)
RS232 interface on
the device
X121 X122 Description
Pin No. Pin name Pin No. Pin name
1 PE 17 PE Protective earth
2 PE4 16 PE8 Protective earth
3 M 15 M Signal ground
4 RX4 14 RX8 Receive data
5 TX4 13 TX8 Transmit data
6 PE3 12 PE7 Protective earth
7 M 11 M Signal ground
8 RX3 10 RX7 Receive data
9 TX3 9 TX7 Transmit data
10 PE2 8 PE6 Protective earth
11 M 7 M Signal ground
12 RX2 6 RX6 Receive data
13 TX2 5 TX6 Transmit data
14 PE1 4 PE5 Protective earth
15 M 3 M Signal ground
16 RX1 2 RX5 Receive data
17 TX1 1 TX5 Transmit data
Wiring example
The following takes SINAMICS V20 and X121 port 1 as an example to indicate the wiring
between the converter and the SINAMICS CONNECT.
Note
To achieve better EMC performance, Siemens recommends you to observe the following
when connecting the converter:
• Use the shielded cable for RS232 communication between the converter and the device.
•
Do not connect the device to the ground via the PE terminal (pin 1 at X121, pin 17 at
X122).
• Route the signal cables and power cables separately in different cable conduits.