ALL PRODUCTS

Siemens 6ES7321-7BH01-0AB0 SIMATIC S7-300, Digital input SM 321 Ready For Ship

Siemens 6ES7321-7BH01-0AB0 SIMATIC S7-300, Digital input SM 321 Ready For Ship

Product Name:SIMATIC S7-300, Digital input SM 321

Brand Name:Siemens

Model Number:6ES7321-7BH01-0AB0

Country of Origin:Germany

Warranty:12 Months

Whatsapp：+86 18159889985

Email：[email protected]

Appurtenance:

siemens 6es7321 7bh01 0ab0 simatic s7 300 digital input sm 321 ready for ship-1

Overview
Contact for quotation
Specifications
Description
Applications
Features
Functions
FAQ
Spares
Recommended Products

Overview

Brand Name:	Siemens
Model Number:	6ES7321-7BH01-0AB0
Country of Origin:	Germany
Packaging Details:	Original new Factory Sealed
Delivery Time:	in stock
Payment Terms:	T/T

Contact for quotation

Sales Manager:	Stella
Send an email:	[email protected]
Contact in Whatsapp:	+86 18159889985

Specifications

Item	Specification
Product Model	6ES7321-7BH01-0AB0
Product Type	S7-300 SM 321 Digital Input Module
Input Channels	16 DI (24 V DC)
Supply Voltage	24 V DC (20.4–28.8 V DC)
Input Type	Isolated digital inputs
Signal Level “1”	13–30 V DC
Signal Level “0”	-30 to +5 V DC
Input Current	~7 mA per channel
Cable Length	600 m (unshielded), 1000 m (shielded)
Diagnostic Function	Yes (configurable)
Interrupt Support	Process interrupt / hardware interrupt
Dimension (H×W×D)	125 × 40 × 120 mm
Weight	~200 g
Power Loss	~4 W
Isolation	500 V DC tested

Description

The 6ES7321-7BH01-0AB0 SIMATIC S7-300 SM 321 is a high-density digital input module designed for reliable signal acquisition in industrial automation systems. It provides 16 isolated 24 V DC inputs with integrated diagnostics and process interrupt functionality, ensuring accurate and stable data collection in demanding control environments.

The 6ES7321-7BH01-0AB0 supports configurable input filtering and isochronous mode operation, making it suitable for time-critical applications. Its robust design includes optical isolation via backplane coupling, enhancing system safety and signal integrity.

Engineered for flexibility and durability, the 6ES7321-7BH01-0AB0 delivers efficient performance, long-distance sensor compatibility, and advanced diagnostic capabilities, making it ideal for modern distributed PLC systems and industrial automation networks.

Applications

Power plants: Used for generator set monitoring and relay protection systems.
Substations: Enable switchyard signal acquisition and protection control.
Chemical plants: Support automation and intrinsically safe signal monitoring.
Steel mills (metallurgical plants): Ensure stable control in high-temperature and EMI environments.
Machinery manufacturing plants: Used in automated production lines and robotic systems.

Features

16-channel isolated 24 V DC digital inputs
Integrated process interrupt and diagnostic functions
High immunity to electrical noise with optical isolation
Long-distance sensor connection support up to 1000 m
Configurable input delay filtering (0.1–20 ms)
LED status indication for channel and system diagnostics

Functions

Digital signal acquisition and processing
Real-time industrial input monitoring
Fault detection and wire-break diagnostics
Process interrupt handling for PLC systems
Signal filtering and stabilization for noisy environments
Integration with S7-300 automation architecture

FAQ

Q1: What is 6ES7321-7BH01-0AB0 used for?
A1: It is used for digital signal input in Siemens S7-300 PLC automation systems.

Q2: How many input channels does it support?
A2: It provides 16 isolated digital input channels.

Q3: Does it support diagnostics?
A3: Yes, it includes configurable diagnostics and LED status indicators.

Q4: Can it handle long cable distances?
A4: Yes, it supports up to 1000 m with shielded cables.

Q5: Is it suitable for industrial environments?
A5: Yes, it is designed for harsh industrial automation and control systems.

Spares

Model No.	Model No.
6ES7288-2DE16-0AA0	6GK1415-2BA10
6ES7531-7PF00-0AB0	6GK1415-2BA20
6SL3210-1PE22-7UL0	6GK5106-1BB00-2AA3
6GK1162-3AA00	6DD1607-0EA1
A1A363818.00M	6EP1336-2BA00
6ES7647-0AA00-1YA2	6ES7516-3FN02-0AB0
6AV2128-3UB06-0AX0	6GT2001-0CA10
6DD1661-0AD0	6EP1436-2BA10
6ES7288-1SR40-0AA0	6EP1931-2EC31
6ES7677-2VB42-0GB0	6ES7518-4FP00-0AB0
6AV7241-5BC07-0JA0	6ES7518-4JP00-0AB0
6GK1417-5AB00	6AT1131-6DD21-0AB0
6GK992-2AL00-8AA0	6ES7212-1AE40-0XB0
6GK5992-1AN00-8AA0	6GK5216-4BS00-2AC2
6GK5992-2AS00-8AA0	6ES7151-1CA00-0AB0
6ES7272-0AA30-0YA0	6SL3210-1KE11-8UF2
6ED1052-1MD00-0BA6	6SL5510-1BB10-1AF0