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Siemens 6ES7321-1CH00-0AA0 SIMATIC S7-300 digital input module Original new

Siemens 6ES7321-1CH00-0AA0 SIMATIC S7-300 digital input module Original new

Product Name:SIMATIC S7-300 digital input module

Brand Name:Siemens

Model Number:6ES7321-1CH00-0AA0

Country of Origin:Germany

Warranty:12 Months

Whatsapp：+86 18159889985

Email：[email protected]

Appurtenance:

siemens 6es7321 1ch00 0aa0 simatic s7 300 digital input module original new-1

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

Overview

Brand Name:	Siemens
Model Number:	6ES7321-1CH00-0AA0
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

Parameter	Specification
Product Model	6ES7321-1CH00-0AA0, SIMATIC S7-300 SM 321 digital input module, isolated 16-channel unit
Input Type	16 digital inputs supporting AC/DC 24–48 V industrial signal detection
Input Characteristic	IEC 61131 Type 1 compliant signal processing for standardized PLC integration
Isolation Method	Optocoupler isolation between channels and backplane bus for high noise immunity
Supply Current	Max. 100 mA from 5 V backplane bus for stable module operation
Cable Length	Up to 1000 m shielded and 600 m unshielded for flexible field wiring
Power Loss	Approx. 1.5 W at 24 V, up to 2.8 W at 48 V operating condition
Dimension	40 × 125 × 120 mm compact modular design for S7-300 rack installation
Weight	Approx. 260 g lightweight industrial-grade input module
Mounting	40-pin front connector system for fast cabinet installation

Description

The 6ES7321-1CH00-0AA0 is a SIMATIC S7-300 digital input module from the Siemens automation portfolio, designed for reliable signal acquisition in industrial control systems. It provides 16 isolated digital inputs supporting both 24–48 V AC/DC signals, making it suitable for flexible field device integration.

As part of the SM 321 series, the 6ES7321-1CH00-0AA0 features robust electrical isolation with optocoupler technology and supports single-point grounding for improved noise immunity. Its IEC 61131 Type 1 input characteristic ensures stable and standardized signal processing across automation environments.

This module is widely used in distributed PLC systems where accurate input detection, long-distance wiring capability, and high electrical safety are required. Its compact S7-300 form factor allows easy integration into control cabinets for industrial automation applications.

Applications

Power plants: Used for generator status monitoring, switching signal acquisition, and relay protection systems.
Substations: Enables circuit breaker feedback, busbar signal collection, and protection system input processing.
Chemical plants: Supports process automation, safety interlock monitoring, and field sensor integration.
Steel mills: Ensures stable digital signal detection in high-temperature and high-EMI environments.
Machinery manufacturing: Applied in automated production lines, robotic systems, and packaging equipment control.

Features

16 isolated digital input channels for flexible signal acquisition
Wide AC/DC 24–48 V input compatibility for industrial environments
High electrical isolation using optocoupler technology
Long-distance wiring capability up to 1000 m shielded cable
Compact S7-300 SM 321 module design for easy system integration

Functions

Converts field digital signals into PLC-readable input data
Provides isolated and stable signal transmission to control CPU
Supports distributed I/O architectures in automation systems
Ensures reliable detection of AC/DC switching states
Enhances system safety through electrical isolation and grounding design

FAQ

Q1: What is the main function of 6ES7321-1CH00-0AA0?
A1: It is a digital input module used to collect and transmit field device signals to PLC systems.

Q2: What type of signals does it support?
A2: It supports 24–48 V AC/DC digital input signals for industrial applications.

Q3: How many input channels are available?
A3: It provides 16 isolated digital input channels.

Q4: Does the module provide electrical isolation?
A4: Yes, it uses optocoupler isolation between channels and the backplane bus.

Q5: Where is this module commonly used?
A5: It is widely used in power plants, substations, chemical plants, and industrial automation systems.

Spares

Model	Model
6GK1162-3AA00	A1A363818.00M
6ES7647-0AA00-1YA2	6AV2128-3UB06-0AX0
6DD1661-0AD0	6ES7288-1SR40-0AA0
6ES7677-2VB42-0GB0	6AV7241-5BC07-0JA0
6GK1417-5AB00	6GK992-2AL00-8AA0
6GK5992-1AN00-8AA0	6GK5992-2AS00-8AA0
6ES7272-0AA30-0YA0	6ED1052-1MD00-0BA6
6GK1503-2CC00	6SL5510-1BB10-1AF0
6SL3210-1KE11-8UF2	6ES7151-1CA00-0AB0
6GK5216-4BS00-2AC2	6ES7212-1AE40-0XB0
6AT1131-6DD21-0AB0	6ES7518-4JP00-0AB0
6ES7518-4FP00-0AB0	6GK1415-2BA10
6GK1415-2BA20	6GK5106-1BB00-2AA3