Digital Input Modules - Siemens SIMATIC S7-1500 System Manual

3.2

Digital input modules

Overview of properties
The table below shows the essential properties of the digital input modules.
Table 3- 3 Digital input modules (35 mm)
Part number: 6ES7521-1BH00-0AB0 6ES7521-1BL00-0AB0 6ES7521-1BH50-0AA0 6ES7521-1FH00-0AA0
Short description
Number of inputs 16
Electrical isolation No
between channels
Number of potential 1
groups
Rated input voltage 24 VDC
Diagnostics interrupt Yes
Hardware interrupt Yes
Isochronous Yes
operation supported
Input delay 0.05 ms to 20 ms
Table 3- 4 Digital input modules (25 mm)
Part number:
Short description
Number of inputs
Electrical isolation between channels Yes
Number of potential groups
Rated input voltage
Diagnostics interrupt
Hardware interrupt
Isochronous operation supported
Input delay
Reference
Further information on the technical specifications of the modules may be found in the
respective manuals.
S7-1500 Automation System
System Manual, 02/2014, A5E03461182-AB
DI 16x24VDC HF
32
Yes
2
24 VDC
Yes
Yes
Yes
0.05 ms to 20 ms
6ES7521-1BL10-0AA0
DI 32x24VDC BA
32
2
24 VDC
No
No
No
1.2 ms to 4.8 ms
DI 32x24VDC HF DI 16x24VDC SRC BA
16
No
1
24 VDC
No
No
No
3 ms
Module overview
3.2 Digital input modules
DI 16x230VAC BA
16
Yes
4
120/230 VAC
No
No
No
25 ms
6ES7521-1BH10-0AA0
DI 16x24VDC BA
16
No
1
24 VDC
No
No
No
1.2 ms to 4.8 ms
25