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Siemens 6ES7321-1BL00-0AA0 SIMATIC S7-300, Digital input SM 321 Ready For Ship

Siemens 6ES7321-1BL00-0AA0 SIMATIC S7-300, Digital input SM 321 Ready For Ship

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

Brand Name:Siemens

Model Number:6ES7321-1BL00-0AA0

Country of Origin:Germany

Warranty:12 Months

Whatsapp：+86 18159889985

Email：[email protected]

Appurtenance:

siemens 6es7321 1bl00 0aa0 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:	6ES7321-1BL00-0AA0
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
Model	6ES7321-1BL00-0AA0
Product Type	SM 321 Digital Input Module
System	SIMATIC S7-300
Input Channels	32 DI
Input Voltage	24 V DC
Input Type	IEC 61131 Type 1
Signal Range (0)	-30 to +5 V
Signal Range (1)	13 to 30 V
Power Loss	6.5 W
Backplane Current	Max. 15 mA
Cable Length (Shielded)	Up to 1000 m
Cable Length (Unshielded)	Up to 600 m
Dimension	40 × 125 × 120 mm
Weight	260 g
Connector Type	40-pin front connector
Isolation	500 V DC tested

Description

6ES7321-1BL00-0AA0 is a Siemens SIMATIC S7-300 SM 321 digital input module designed for reliable signal acquisition in industrial automation systems. It provides 32 isolated 24 V DC digital inputs with stable performance and secure electrical separation, ensuring accurate data collection from field devices.

6ES7321-1BL00-0AA0 supports IEC 61131 Type 1 input characteristics and delivers fast response times with fixed signal delay, making it suitable for standard control and monitoring applications. The module is powered via backplane bus and offers robust operation even under demanding industrial conditions.

With compact 40 mm width design and easy integration into S7-300 racks, 6ES7321-1BL00-0AA0 is widely used in PLC-based systems requiring high-density digital input processing and dependable field-level connectivity.

Applications

Power plants: Used for generator monitoring, relay protection, and signal acquisition systems.
Substations: Enables digital input processing for switchgear control and protection logic.
Chemical plants: Supports process automation and safe signal detection from field instruments.
Steel mills (metallurgical plants): Ensures stable operation in high EMI and high-temperature environments.
Machinery manufacturing plants: Applied in automated production lines, robotic systems, and machine control panels.

Features

32-channel isolated digital input design
Stable 24 V DC industrial signal processing
High noise immunity with optocoupler isolation
Compact S7-300 modular structure
Long-distance signal transmission support

Functions

Digital signal acquisition from field devices
PLC input processing for automation logic
Status monitoring of industrial equipment
Signal isolation and electrical protection
Integration into Siemens S7-300 control systems

FAQ

Q1: What is 6ES7321-1BL00-0AA0 used for?
A1: It is used to collect digital input signals in Siemens S7-300 PLC automation systems.

Q2: How many input channels does 6ES7321-1BL00-0AA0 have?
A2: It provides 32 isolated digital input channels.

Q3: What is the operating voltage of 6ES7321-1BL00-0AA0?
A3: It operates on 24 V DC industrial control voltage.

Q4: Does 6ES7321-1BL00-0AA0 support long cable distances?
A4: Yes, up to 1000 m with shielded cables is supported.

Q5: Is 6ES7321-1BL00-0AA0 suitable for harsh environments?
A5: Yes, it is designed with industrial isolation and strong noise immunity for demanding conditions.

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