Siemens SIMATIC S7-300 Reference Manual page 121

Technical specifications of the SM 321; DI 16 x 24/48 VUC
Dimensions and Weight
Dimensions W x H x D
Weight
Data for Specific Module
Supports clocked
operation
Number of inputs
Length of cable
•
Unshielded
•
Shielded
Voltages, Currents, Potentials
Number of inputs that can be
triggered simultaneously
•
Horizontal configuration
Up to 60°C
•
All other configuration types
Up to 40° C
Isolation
•
Between channels and
backplane bus
•
Between channels
In groups of
Permitted potential difference
•
Between the channels and
the backplane bus
•
Between the inputs of the
different groups
Insulation tested with
•
Between the channels and
the backplane bus
•
Between the inputs of the
different groups
Current consumption
•
From the backplane bus
Power dissipation of the module
•
Operation with 24 V
•
Operation with 48 V
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
40 x 125 x 117
Approx. 260 g
No
16
max. 600 m
max. 1000 m
16
16
Yes
Yes
1
170 VDC, 120 VAC
170 VDC, 120 VAC
1500 VAC
1500 VAC
max. 100 mA
typ. 1.5 W
typ. 2.8 W
Status, Interrupts, Diagnostics
Status display
Interrupts
Diagnostic functions
Data for Selecting a Sensor
Input voltage
•
Rated value
•
At signal "1"
•
At signal "0"
•
Frequency range
Input current
•
At signal "1"
•
At signal "0"
Input delay
•
From " 0" to "1"
•
At "1" to "0"
Input characteristic curve
Connection of Two-Wire
BEROs
•
Permitted bias current
Digital Modules
Green LEDs per
channel
None
None
24 or 48 VDC/ 24 or
48 VAC
14 V to 60 V
–5 V to 5 V
0 to 63 Hz
typ. 2.7 mA
–1 to +1 mA
max. 16 ms
max. 16 ms
According to
IEC 61131, type 1
Possible
max. 1 mA
3-37