Siemens SIMATIC S7-300 Module data Reference Manual

Digital Modules
3-115
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical specifications of the SM 323; DI 8/DO 8 x 24 VDC/0.5 A
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 117
Weight Approx. 200 g
Data for Specific Module
Supports clocked
operation
No
Number of inputs 8
Number of outputs 8
Length of cable
• Unshielded
• Shielded
max. 600 m
max. 1000 m
Voltages, Currents, Potentials
Rated load voltage L+ 24 VDC
Number of inputs that can be
triggered simultaneously
• Horizontal configuration
Up to 60 C
• Vertical configuration
Up to 40 C
8
8
Total current of the outputs
(per group)
• Horizontal configuration
Up to 60 C
• Vertical configuration
Up to 40 C
max. 4 A
max. 4 A
Isolation
• Between channels and
backplane bus
Yes
• Between the channels
Inputs in groups of
Outputs in groups of
Yes
8
8
Permitted potential difference
• Between the different
circuits
75 VDC / 60 VAC
Insulation tested with 500 VDC
Current consumption
• From the backplane bus
• From load voltage L+
(without load)
max. 40 mA
max. 40 mA
Power dissipation of the module typ. 3.5 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”
24 VDC
13 to 30 V
–30 to 5 V
Input current
• At signal “1” typ. 7 mA
Input delay
• At “0” to “1”
• At “1” to “0”
1.2 to 4.8 ms
1.2 to 4.8 ms
Input characteristic curve According to
IEC 61131, type 1
Connection of Two-Wire
BEROs
• Permitted bias current
Possible
max. 1.5 mA
Data for Selecting an Actuator
Output voltage
• At signal “1” min. L + (–0.8 V)
Output current
• At signal “1”
Rated value
Permitted range
0.5 A
5 mA to 0.6 A
• At signal “0”
(leakage current)
max. 0.5 mA
Output delay (for resistive load)
• At “0” to “1”
• At “1” to “0”
max. 100 s
max. 500 s
Load resistor range 48  to 4 k
Lamp load max. 5 W
Parallel connection of
2 outputs
• For redundant triggering of
a load
Possible (only outputs
of the same group)
• To increase performance Not possible
Triggering a digital input Possible
Switch rate
• For resistive load
• Inductive load according to
IEC 947-5-1, 13 DC
• For lamp load
max. 100 Hz
max. 0.5 Hz
max. 10 Hz
Limit (internal) of the inductive
circuit interruption voltage up
L + (–53 V), typ.
Short-circuit protection of the
output
Yes, electronic
• Threshold on 1 A, typ.

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)