Siemens SIMATIC Manual page 96

Digital modules
3.12 Digital input module SM 321; DI 16 x DC 24/125 V; with hardware and diagnostic interrupts (6ES7321-
7EH00-0AB0)
The resistance used depends on the module's rated input voltage
Table 3- 16
Rated input voltage L+
24 V DC
48 V DC
125 V DC
SM 321; DI 16 x DC 24 V/125V - Technical specifications
Technical specifications
Dimensions and weight
Dimensions W x H x D (mm)
Weight
Module-specific data
Supports isochronous mode
Supports parameter reassignment in RUN
•
Response of non-programmed inputs
Accuracy of the time stamp
Number of inputs
Cable length
•
unshielded
•
shielded
Voltages, currents, electrical potentials
Number of simultaneously controlled inputs
•
Horizontal mounting position to 60 °C
– L+ = 146 VDC
– L+ = 125 VDC
– L+ = 100 VDC
•
Vertical mounting position to 40 °C
– L+ = 146 VDC
– L+ = 125 VDC
– L+ = 100 VDC
Electrical isolation
•
between channels and the backplane bus
•
between channels
Maximum potential difference
•
between different circuits
Isolation test voltage
96
Dependence on rated input voltage and resistance
Resistance R
s
43 kΩ
100 kΩ
300 kΩ
40 x 125 x 117
approx. 200 g
No
Yes
return the process value which was valid before
configuration
> 5 ms*
16
max. 600 m
max. 1000 m
8
12
16
8
12
16
Yes
No
300 V DC / 250 V AC
3500 VDC
Manual, 06/2017, A5E00105505-AJ
S7-300 Module data