Siemens SIMATIC User Manual

Digital modules
3.11 Digital input module SM 321; DI 16 x 24 VDC; with hardware and diagnostic interrupts (6ES7321-7BH01-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
83
Technical specifications of SM 321; DI 16 x DC 24 V
Technical specifications
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 117
Weight
ca. 200 g
Module-specific data
Supports isochronous mode
yes
Supports parameter reassignment in RUN
yes
• Response of non-programmed inputs
return the process value which was valid before
configuration
Number of inputs
16
Cable length
• unshielded
• shielded
max. 600 m
max. 1000 m
Voltages, currents, electrical potentials
Rated supply voltage L+ for the electronic system and sensors
24 V DC
• Reverse polarity protection
yes
Number of simultaneously controlled inputs
• horizontal mounting position
to 60 °C
16
• vertical mounting position
to 40 °C
16
Electrical isolation
• between channels and the backplane bus
• between channels
– In groups of
yes
16
Isolation test voltage
500 V DC
Current consumption
• from the backplane bus
max. 130 mA
• from load voltage L + (without sensor supply V
S
)
max. 90 mA
Power loss of the module
typ. 4 W

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)