Siemens SIMATIC Manual page 110

Digital modules
3.15 Digital input module SM 321; DI 16 x DC 48-125 V; (6ES7321-1CH20-0AA0)
Technical specifications
Sensor selection data
Input voltage
•
Rated value
•
"1" signal
•
"0" signal
Input current
•
"1" signal
Input delay
•
"0" to "1" transition
•
"1" to "0" transition
Input characteristics
Connection of 2-wire BEROs
•
Permissible quiescent current
Wiring the signal transducers
110
48 VDC to 125 VDC
30 V to 146 V
-146 V to 15 V
typ. 3.5 mA
0.1 ms to 3.5 ms
0.7 ms to 3.0 ms
to IEC 61131, type 1
supported
max. 1 mA
using a 20-pin front connector
Manual, 06/2017, A5E00105505-AJ
S7-300 Module data