Siemens SIMATIC S7-300 Manual page 87

Technical data of SM 321; DI 16 x DC 48-125 V
Technical data
Dimensions and weight
Dimensions W x H x D (mm)
Weight
Module-specific data
Isochronous mode supported
Number of inputs
Cable length
unshielded
shielded
Voltages, currents, electrical potentials
Number of simultaneously controlled input at V
horizontal mounting position
•
up to 50 °C
up to 60 °C
vertical mounting position
•
up to 40 °C
Electrical isolation
between channels and the backplane bus
•
between channels
•
in groups of
Permissible potential difference
between different circuits
•
Isolation test voltage
Current consumption
from the backplane bus
•
Power loss of the module
Status, interrupts, diagnostics
Status display
Interrupts
Diagnostics functions
Transducer selection data
Input voltage
Rated value
•
for "1" signal
•
for "0" signal
•
Input current
with "1" signal
•
Input delay
at "1" to "0"
•
at "1" to "0"
•
Input characteristics
Connection of 2-wire BEROs
Permissible quiescent current
•
Wiring signal transducers
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
3.13 Digital input module SM 321; DI 16 x 48-125 VDC; (6ES7321-1CH20-0AA0)
I
40 x 125 x 120
approx. 200 g
No
16
max. 600 m
max. 1000 m
up to 60 V
8
8
8
Yes
Yes
8
146 VDC / 132 VAC
1500 VDC
max. 40 mA
typ. 4.3 W
green LED per channel
None
None
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
with 20-pin front connector
Digital modules
up to 146 V
8
6
8
3-39