Siemens SIMATIC S7-300 Module data Reference Manual

Digital Modules
3-45
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical specifications of the SM 321; DI 8 x 120/230 VAC ISOL
Dimensions and Weight
Dimensions W x H x D 40 x 125 x 117
Weight Approx. 240 g
Data for Specific Module
Supports clocked
operation
No
Number of inputs 8
Length of cable
• Unshielded
• Shielded
max. 600 m
max. 1000 m
Voltages, Currents, Potentials
Rated load voltage L1
All load voltages must be of the
same phase
120/230 VAC
Number of inputs that can be
triggered simultaneously
• Horizontal configuration
Up to 60 °C
8
• Vertical configuration
Up to 40 °C
8
Isolation
• Between channels and
backplane bus
Yes
• Between channels Yes
In groups of 1
Permitted potential difference
• Between M
internal
and the
inputs
230 VAC
• Between the inputs of the
different groups
500 VAC
Insulation tested with
• Between M
internal
and the
inputs
1500 VAC
• Between the inputs of the
different groups
2000 VAC
Current consumption
• From the backplane bus max. 100 mA
Power dissipation of the module typ. 4.9 W
Status, Interrupts, Diagnostics
Status display Green LED per channel
Interrupts None
Diagnostic functions None
Data for Selecting a Sensor
Input voltage
• Rated value
• For signal “1”
• For signal “0”
• Frequency range
120/230 VAC
79 to 264 V
0 to 40 V
47 to 63 Hz
Input current
• At signal “1”
120 V, 60 Hz
230 V, 50 Hz
typ. 7.5 mA
typ. 17.3 W
Input delay
• ”0” to “1”
• ”0” to “1”
max. 25 ms
max. 25 ms
Input characteristic curve According to
IEC 61131, type 1
Connection of Two-Wire
BEROs
Possible
• Permitted bias current max. 2 mA

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)