6ES5252-3AA21 Siemens SIMATIC S5 Digital I/O Module, PLC Interface Card, S5-100 Series Expansion Unit

Siemens 6ES5252-3AA21 Module

6ES5252-3AA21 Digital Input

SIMATIC S5 24VDC Module

6ES5252-3AA21

The Siemens 6ES5252-3AA21 Module is a SIMATIC S5 24VDC Module designed for digital input applications, enabling reliable 24VDC signal acquisition and integration with industrial automation systems.

Specification

SEODescription

The **Siemens 6ES5252-3AA21 Module** is a **SIMATIC S5 24VDC Module** designed for industrial automation, offering **16 digital input** channels to interface with sensors and switches. Operating at 24VDC, it integrates directly into SIMATIC S5 systems, supporting seamless connectivity with up to 32 modules via a centralized backplane bus. This robust module operates within a temperature range of 0°C to 60°C and is ideal for harsh environments in manufacturing, process control, and machinery sectors. Key advantages include high reliability, compact design, and compatibility with legacy S5 architectures. However, it lacks modern communication interfaces like PROFIBUS or Ethernet, limiting its use in advanced networked systems. Its rugged construction ensures stable performance in voltage fluctuations and industrial noise scenarios.

SEOSpecification

Parameter	Specification
Module Type	Siemens 6ES5252-3AA21 Digital Input Module
System Compatibility	SIMATIC S5 Programmable Controller
Input Voltage	24VDC Nominal (15-30VDC Range)
Number of Inputs	16 Digital Input Channels
Input Current	Approx. 7mA per Input (24VDC)
Isolation	Optoelectronic Isolation between Field and Logic
Power Consumption	2W (Module) + 0.5W per Active Input
Response Time	≤1ms (ON), ≤15ms (OFF)
Connection Type	Screw Terminal Block
Certification	CE, UL, cULus Listed
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +70°C
Dimensions (HxWxD)	80mm x 40mm x 62mm
Weight	Approx. 200g

SEOQandA

question:Can the company provide technical selection services?
answer:Yes, we offer professional technical selection guidance to meet your project requirements.
question:Can the company ensure stable supply?
answer:Yes, we maintain efficient supply chain management and sufficient inventory for consistent delivery.
question:Does the company offer upgraded or alternative models?
answer:Yes, we provide upgraded or alternative models based on your needs and product availability.

SEOQandA_Product

question:Module not detected in STEP7/TIA Portal configuration?
answer:Verify hardware configuration matches module type and address settings in the project.
question:Analog output signals unstable or inaccurate?
answer:Check wiring integrity, ensure proper grounding, and validate sensor/actuator compatibility.
question:No communication via Profibus/Profinet?
answer:Inspect bus connectors, confirm correct baud rate, and check for address conflicts.
question:Status LED indicates fault (red light)?
answer:Verify power supply (24VDC ±10%) and replace module if voltage is correct but fault persists.
question:Output range mismatch (e.g., 0-10V instead of 4-20mA)?
answer:Reconfigure output parameters in PLC programming software to match required signal type.