6ES7521-1BH00-0AB0

Siemens 6ES7521-1BH00-0AB0 – SIMATIC S7-1500 DI 16x24 V DC HF Digital Input Module

6ES7521-1BH00-0AB0 is a Siemens SIMATIC S7-1500 Digital Input Module DI 16x24 V DC HF, designed for reliable acquisition of digital field signals in modern industrial automation systems. The module provides 16 digital inputs for 24 V DC signals, arranged in a single group of 16 channels.

The high-feature HF design provides enhanced signal processing capabilities, including adjustable input delay, diagnostic functions, hardware interrupts and counter functionality on selected inputs. This makes the module suitable for machine automation, production equipment, material handling systems and control panels requiring flexible digital signal acquisition.

PRODUCT DETAILS

·        Brand: Siemens

·        Product Family: SIMATIC S7-1500

·        Order Number / MLFB: 6ES7521-1BH00-0AB0

·        Module Type: Digital Input Module

·        Input Configuration: DI 16x24 V DC HF

·        Number of Digital Inputs: 16

·        Input Voltage: 24 V DC

·        Channel Grouping: 16 channels in 1 group

·        Input Type: Type 3 according to IEC 61131

·        Input Delay: 0.05 to 20 ms

·        Counter Inputs: 2 inputs can be used as counters

·        Diagnostics: Integrated diagnostic functions

·        Hardware Interrupts: Supported

·        Front Connector: Required separately

·        Connector Type: Screw terminal or Push-in front connector

·        System: SIMATIC S7-1500

BENEFITS

16 DIGITAL INPUT CHANNELS

Provides 16 channels for collecting 24 V DC digital signals in a compact PLC I/O architecture.

FLEXIBLE INPUT RESPONSE

Adjustable input delay from 0.05 to 20 ms provides flexibility for different signal types and machine requirements.

COUNTER CAPABILITY

Two inputs can be used for counter applications, expanding the functionality of the digital input module.

DIAGNOSTIC SUPPORT

Integrated diagnostics assist with system monitoring, commissioning and troubleshooting.

HARDWARE INTERRUPTS

Supports event-driven PLC processing for applications requiring responsive input handling.

INDUSTRIAL-GRADE PLC INTEGRATION

Designed as part of the Siemens SIMATIC S7-1500 modular automation platform.

FLEXIBLE WIRING

Compatible front connector options provide flexibility for panel wiring using screw or push-in terminals.

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