Siemens SIMATIC User Manual

Digital modules
3.9 Digital input module SM 321; DI 16 x DC 24 V; (6ES7321-1BH02-0AA0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
77
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
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
to 60 °C
• vertical mounting position
to 40 °C
16
16
Electrical isolation
• between channels and the backplane bus
• between channels
• in groups of
yes
yes
16
Isolation test voltage
500 V DC
Current consumption
• from the backplane bus
max. 10 mA
Power loss of the module
typ. 3.5 W
Status, interrupts, diagnostics
Status display
green LED per channel
Interrupts
none
Diagnostic functions
none
Encoder selection data
Input voltage
• Rated value
• "1" signal
• "0" signal
24 V DC
13 V to 30 V
- 30 V to + 5 V
Input current
• "1" signal
typ. 7 mA
Input delay
• "0" to "1" transition
• "1" to "0" transition
1.2 ms to 4.8 ms
1.2 ms to 4.8 ms
Input characteristics
to IEC 61131, type 1
Connection of 2-wire BEROs
• Permissible quiescent current
supported
max. 1.5 mA
Wiring of the signal transmitters
using a 20-pin front connector

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)