Siemens SIMATIC User Manual

Digital modules
3.14 Digital input module SM 321; DI 16 x UC 24/48 V; (6ES7321-1CH00-0AA0)
S7-300 Module data
106 Manual, 06/2017, A5E00105505-AJ
SM 321; DI 16 x UC 24/48 V - Technical specifications
Technical specifications
Dimensions and weight
Dimensions W x H x D 40 x 125 x 117
Weight
ca. 260 g
Module-specific data
Supports isochronous mode
no
Number of inputs
16
Cable length
• unshielded
• shielded
max. 600 m
max. 1000 m
Voltages, currents, electrical potentials
Number of simultaneously controlled inputs
• horizontal mounting position up to 60 °C
16
• other mounting positions up to 40 °C
16
Electrical isolation
• Between channels and the backplane bus
Yes
• between channels
In groups of
Yes
1
Maximum potential difference
• Between channels and the backplane bus
170 VDC, 120 VAC
• between inputs of different groups
170 VDC, 120 VAC
Isolation test voltage
• Between channels and the backplane bus
1500 VAC
• between inputs of different groups
1500 VAC
Current consumption
• from the backplane bus
100 mA max.
Power loss of the module
• Operation with 24 V
• Operation with 48 V
typ. 1.5 W
typ. 2.8 W
Status, interrupts, diagnostics
Status display
Interrupts
Diagnostic functions
green LED per channel
none
none

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)