Siemens 6ES7 321 1BH02 0AA0

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Description

The Siemens 6ES7 321 1BH02 0AA0 is a digital input module designed for use with Siemens’ SIMATIC S7-300 series of programmable logic controllers (PLCs). This module allows the PLC to receive and process digital signals from various input devices, such as switches, sensors, and push buttons. If need 6ES7 321 1BH02 0AA0 you can contact BAT Power Solution Via WhatsApp: +8801713722455

Characteristics of SM 321; DI 16 x DC 24 V:

+16 inputs, electrically isolated in groups of 16

+Rated input voltage is 24 V DC

+Suitable for switches and 2-/3-/4-wire proximity switches (BEROs)

Features of Siemens 6ES7 321 1BH02 0AA0

Digital Inputs:
- The module provides 16 digital inputs. These inputs can handle signals from standard 24V DC devices, which are common in industrial automation environments.
Input Characteristics:
- Rated Input Voltage: 24V DC
- Input Type: The inputs are designed to detect and process standard 24V DC signals, with the ability to recognize “0” (low) and “1” (high) states.
Isolation:
- The module features isolation between the input channels and the backplane bus to protect the CPU and other components from potential electrical noise or surges.
LED Indicators:
- Each input channel is equipped with an LED indicator, providing visual confirmation of the input signal status. This is useful for troubleshooting and monitoring the system.
Mounting and Installation:
- The module is designed for easy installation on the S7-300 rail, and it uses a front connector for wiring the inputs. This setup allows for quick and efficient assembly and maintenance.
Compatibility:
- The 6ES7321-1BH02-0AA0 is fully compatible with the SIMATIC S7-300 PLC system, making it easy to integrate into existing configurations and expanding the PLC’s digital input capacity.

Specification of 6ES7321-1BH02-0AA0

Supply voltage
Load voltage L+
● Rated value (DC)	24 V
● permissible range, lower limit (DC)	20.4 V
● permissible range, upper limit (DC)	28.8 V
Input current
from backplane bus 5 V DC, max.	10 mA
Power loss
Power loss, typ.	3.5 W
Digital inputs
Number of digital inputs	16
Input characteristic curve in accordance with IEC 61131, type 1	Yes
Number of simultaneously controllable inputs
horizontal installation
— up to 40 °C, max.	16
— up to 60 °C, max.	16
vertical installation
— up to 40 °C, max.	16
Input voltage
● Type of input voltage	DC
● Rated value (DC)	24 V
● for signal “0”	-30 to +5 V
● for signal “1”	13 to 30V
Input current
● for signal “1”, typ.	7 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable	No
— at “0” to “1”, min.	1.2 ms
— at “0” to “1”, max.	4.8 ms
— at “1” to “0”, min.	1.2 ms
— at “1” to “0”, max.	4.8 ms
Cable length
● shielded, max.	1 000 m
● unshielded, max.	600 m
Encoder
Connectable encoders
● 2-wire sensor	Yes
— permissible quiescent current (2-wire sensor), max.	1.5 mA
Interrupts/diagnostics/status information

Alarms	No
Diagnostics function	No
Alarms
● Diagnostic alarm	No
● Hardware interrupt	No
Diagnostics indication LED
● Status indicator digital input (green)	Yes
Potential separation
Potential separation digital inputs
● between the channels	No
● between the channels, in groups of	16
● between the channels and backplane bus	Yes; Optocoupler
Isolation
Isolation tested with	500 V DC
connection method
required front connector	20-pin
Dimensions
Width	40 mm
Height	125 mm
Depth	120 mm
Weights
Weight, approx.	200 g

The Siemens 6ES7321-1BH02-0AA0 digital input module is a reliable and essential component for expanding the input capabilities of the SIMATIC S7-300 PLC system. With its 16 digital inputs, it is well-suited for a wide range of industrial applications where accurate and efficient signal processing is required.

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