Connecting Interfaces To Connecting Terminal X4 - Siemens SIMATIC FDE Operating Instructions Manual

Note
The power supply must be adjusted to match the connected loads of the device, see
"Technical specifications (Page 48)".
In case of voltage peaks on the power supply lines, protective devices in the form of a varistor
(MOV) UMOV = U-nom. x 1.2 (BLITZDUCTOR BVT AVD 24 (918 422) or equivalent) must to be
used.
4.10.2

Connecting interfaces to connecting terminal X4

Connection capacity
Connecting terminal X4 connects different interface types. The following aspects must be
taken into account:
Conductor type
Solid conductor
Flexible conductor without end sleeve
Flexible conductor with ferrules, without plastic
sleeve
Flexible conductor with ferrules, with plastic
sleeve
The maximum length of cables to be connected to X4 is 3 m.
Note
Shielded cables
If cables with a shield are used, the shields must be connected to a ground connection in the
system in which the device is used. This is in order to ensure EMC and EMI compatibility.
Pin overview of connecting terminal X4
The pin designations are also printed on the device.
Pin Short description
1 SUPPLY 24V DC
2 SUPPLY GND
3 DIO H/AI H
4 DIO L/AI L
5 RS TXD/A
6 RS RXD/B
SIMATIC FDE Gateway
Operating Instructions, 02/2023, A5E52308942-AB
Minimum cross-section
0.25 mm²
0.25 mm²
0.25 mm²
0.25 mm²
Meaning
24 V DC power supply
Ground for 24 V DC power supply
High/VCC for 24 V configurable digital DI/DO/AI (isolated)
Low for 24 V configurable digital DI/DO/AI (isolated)
TxD pin for RS232
RxD pin for RS232
Installing and connecting a device
4.10 Connecting the device
Maximum cross-section
1.5 mm²
1.5 mm²
1.5 mm²
0.75 mm²
21