Siemens Digital input module DI 16x24VDC 6ES7521-1BH

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Delivered between Thu, 3.9. and Fri, 4.9.
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Product details

The Siemens Digital Input Module DI 16x24VDC is a high-precision relay specifically designed for use in SIMATIC S7-1500 series PLC systems. With 16 digital channels arranged in groups of 16, the module offers flexible applications in industrial automation. Two of the inputs can additionally be used as counters, expanding the module's functionality. The input delay is adjustable from 0.05 to 20 milliseconds, enabling precise control and fast response times. The module complies with input type 3 according to IEC 61131 and provides comprehensive diagnostic functions as well as process alarms, allowing for early detection of faults. Installation is carried out via front connectors, with screw terminals or push-in technology available for separate order. The system is modular and can be seamlessly integrated into the scalable and universally applicable SIMATIC ET 200MP peripheral system. Thanks to its robust design and high reliability, the module is ideally suited for demanding industrial applications where fast and precise digital inputs are required.

  • 16 digital channels with counter function
  • Adjustable input delay from 0.05 to 20 ms
  • Diagnostic functions and process alarms.

30-day right of return
24 Months Warranty (Bring-in)
3 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Relays» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 6.Tru Components
    0.2 %
  • 10.Hager
    0.7 %
  • 11.Siemens
    0.8 %
  • 12.Shelly
    1 %
  • 13.Aqara
    1.2 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Siemens
    Not enough data
  • 1.Hager
    0 days
  • 2.Shelly
    3 days
  • ABB
    Not enough data
  • Aqara
    Not enough data

Return rate

How often is a product of this brand in the «Relays» category returned?

Source: Digitec Galaxus
  • 3.Tru Components
    0.8 %
  • 4.Hager
    1.7 %
  • 5.Siemens
    2 %
  • 6.Schalk
    2.2 %
  • 7.Eaton
    2.4 %
Source: Digitec Galaxus