X520 Bidirectional Digital Inputs/Outputs; X521 Bidirectional Digital Inputs/Outputs - Siemens SINAMICS S120 Manual

Terminal Modules
6.3 Terminal Module TM15
6.3.2.3

X520 bidirectional digital inputs/outputs

Table 6-4
Type: Screw terminal 1 (Page 321)
L1+: The 24 V DC infeed for DI/DO 0 to 7 (first potential group) must always be connected if at least one
1)
DI/DO of the potential group is used as an output.
M1: The ground reference for DI/DO 0 to 7 (first potential group) must always be connected if at least
one DI/DO of the potential group is used as an input or output.
DI/DO: Bidirectional digital input/output
6.3.2.4

X521 bidirectional digital inputs/outputs

Table 6-5
Type: Screw terminal 1 (Page 321)
L2+: The 24 V DC infeed for DI/DO 8 to 15 (second potential group) must always be connected if at least
1)
one DI/DO of the potential group is used as an output.
M2: The ground reference for DI/DO 8 to 15 (second potential group) must always be connected if at
least one DI/DO of the potential group is used as an input or output.
DI/DO: Bidirectional digital input/output
120
X520 digital inputs/outputs
Terminal
1
1
2
3
4
5
6
7
8
9
10
10
X521 digital inputs/outputs
Terminal
1
1
2
3
4
5
6
7
8
9
10
10
Designation Technical data
1)
L1+ See Chapter "Technical data
(Page 128)".
DI/DO 0
DI/DO 1
DI/DO 2
DI/DO 3
DI/DO 4
DI/DO 5
DI/DO 6
DI/DO 7
M1 (GND)
Designation 1) Technical data
L2+ See Chapter "Technical data
(Page 128)".
DI/DO 8
DI/DO 9
DI/DO 10
DI/DO 11
DI/DO 12
DI/DO 13
DI/DO 14
DI/DO 15
M2 (GND)
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2