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Home Product 6ES7321-1FF10-0AA0 Siemens S7-300 16-Channel Digital Input Module 24VDC DI PLC Controller Component
SM 321 digital input modules

6ES7321-1FF10-0AA0 Siemens S7-300 16-Channel Digital Input Module 24VDC DI PLC Controller Component

Siemens S7-300 Digital Input
16-Channel DI Module 24VDC
6ES7321-1FF10-0AA0 Module
6ES7321-1FF10-0AA0
Siemens S7-300 Digital Input Module 16-Channel 24VDC DI, 6ES7321-1FF10-0AA0 Industrial Automation PLC Module with Electrical Isolation and Diagnostics for Process Control Systems.
Categories:Automation
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Product Description

The Siemens S7-300 Digital Input Module, 6ES7321-1FF10-0AA0, is a 16-channel DI module designed for industrial automation applications. Operating at 24VDC, it supports direct connection to sensors or switches, with each input channel compatible with 24V digital signals. The module features electrical isolation between channels and the backplane bus, ensuring reliable performance in harsh environments. It is integrated into the S7-300 PLC system via a front connector, simplifying wiring. With a voltage tolerance range of 20.4–28.8VDC per channel and a typical input current of 3–15mA, it operates efficiently within 0–60°C, suitable for manufacturing, process control, and machinery. Key advantages include high noise immunity, LED status indicators, and seamless compatibility with Siemens PLC systems. A limitation is its exclusive DC voltage support, requiring external signal conditioning for AC inputs. Compact and rugged, it lacks onboard battery or display components, focusing purely on robust digital signal acquisition.
Parameter Specification
Manufacturer Siemens AG
Series S7-300
Product Line Digital Input Module
Module Type 16-Channel DI 24VDC
Order Number 6ES7321-1FF10-0AA0
Input Channels 16
Input Voltage 24 VDC (20.4 VDC to 28.8 VDC)
Input Current Typical 7 mA per channel
Input Delay Time 1.2 ms to 4.8 ms (configurable)
Power Consumption 12 mA from backplane bus
Isolation 500 VDC between channels and backplane bus
Mounting DIN rail (S7-300 rack)
Connection Method Spring-loaded front connector
Dimensions (WxHxD) 40 mm x 125 mm x 117 mm
Weight 190 g
Certifications CE, UL, cULus, Ex
Operating Temperature 0 °C to 60 °C
Storage Temperature -40 °C to 70 °C
Status Indicators Green LED per channel
question:What is the warranty?
answer:The warranty covers product defects for 1 year from the purchase date, with valid proof of purchase.
question:How do you handle shipping?
answer:We ship via DHL, Fedex, UPS, and other major carriers. Delivery time depends on destination.
question:What is your return policy?
answer:Returns are accepted within 30 days with proof of purchase. Contact support to process returns.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:What is the warranty?
answer:The warranty covers product defects for 1 year from the purchase date, with valid proof of purchase.
question:How do you handle shipping?
answer:We ship via DHL, Fedex, UPS, and other major carriers. Delivery time depends on destination.
question:What is your return policy?
answer:Returns are accepted within 30 days with proof of purchase. Contact support to process returns.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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