X20 system modules • Bus receivers and Bus transmitters • X20BT9100
610
X20 system User's Manual 3.10
With feed for internal I/O supply
See also 4.8.3.7 "Supply via bus transmitter".
GND
+24 VDC
BT
+
_
I/O
Power supply
X2X
X2X\
X2X⊥
10 A slow-blow
Figure 240: Connection example - With feed for internal I/O supply
4.8.3.7 Supply via bus transmitter
The bus transmitter has an integrated internal I/O supply feed. This saves a power supply module for the last
potential group.
Keep in mind: this potential group is separated from the rest of the potential groups by an I/O module with the
X20BM01 bus module.
U1/24 VDC
U2/24 VDC
X2X
Link
I/O
I/O
I/O
BR
93
00
+
B
M
01
PS
21
00
+
B
M
01
I/O
m
od
ul
e
+
BM
01
BT
9x
00
+
B
M
11
10 A slow-blow
10 A slow-blow
1 A slow-blow
1)
10 A slow-blow
Figure 241: Protection when supplied via bus transmitter
1) Recommended for line protection.