Brand:Siemens Item No.:6ES7521-1BP00-0AA0 Product Origin:Germany Product Dimensions:35 × 147 × 129 mm Product Weight:0.26 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Siemens 6ES7521-1BP00-0AA0 Digital Input Module belongs to the SIMATIC S7-1500 SM 521 product family. Designed for industrial automation systems requiring a high number of digital input points, it provides 64 inputs for monitoring 24 V DC signals from compatible sensors, switches, and field devices.
The module supports sinking and sourcing input configurations and features Type 3 input characteristics according to IEC 61131. Its four groups of 16 channels allow signals to be organized for suitable industrial wiring arrangements. With a typical input delay of 3.2 ms, it is intended for standard digital signal acquisition rather than high-speed counter applications.
The Siemens 6ES7521-1BP00-0AA0 can be integrated into compatible SIMATIC S7-1500 and ET 200MP systems. Cables and terminal blocks must be ordered separately as required by the selected connection arrangement. Before installation, verify the wiring configuration, accessory requirements, and controller compatibility.
Technical Specifications
Parameter
Specification
Brand
Siemens
Model
6ES7521-1BP00-0AA0
Product Family
SIMATIC S7-1500 SM 521
Product Type
Digital Input Module
Module Designation
DI 64x24VDC SNK/SRC BA
Number of Digital Inputs
64
Channel Arrangement
4 groups of 16
Rated Input Voltage
24 V DC
Permissible Input Voltage
19.2–28.8 V DC
Input Configuration
Sinking / Sourcing
Input Characteristic
Type 3, IEC 61131
Typical Input Delay
3.2 ms
Counter Function
Not supported
Hardware Interrupts
Not supported
Diagnostic Functions
No
Engineering Software
STEP 7 / compatible TIA Portal
Dimensions
35 × 147 × 129 mm
Weight
0.26 kg / 0.57 lb
Recommended Related Models
Siemens 6ES7521-1BL00-0AB0 – 32-channel SM 521 digital input module with high-feature input functions.
Siemens 6ES7521-1BL10-0AA0 – 32-channel digital input module for standard 24 V DC signal acquisition.
Siemens 6ES7521-1BH00-0AB0 – 16-channel digital input module for smaller I/O configurations.
Siemens 6ES7522-1BL01-0AB0 – Digital output module for compatible S7-1500 control applications.
Siemens 6ES7523-1BL00-0AA0 – Digital input/output module for applications requiring combined signal acquisition and output control.
Popular Related Models
Siemens 6ES7521-1BL00-0AB0
Siemens 6ES7521-1BL10-0AA0
Siemens 6ES7521-1BH00-0AB0
Siemens 6ES7522-1BL01-0AB0
Siemens 6ES7523-1BL00-0AA0
Applications
The Siemens 6ES7521-1BP00-0AA0 is a SIMATIC S7-1500 SM 521 digital input module designed to collect signals from industrial sensors, switches, and other field devices. With 64 digital inputs supporting 24 V DC signals, it enables compatible PLC systems to monitor equipment status and process conditions across a wide range of automation applications.
Typical applications include:
Industrial Machine Control: Monitoring limit switches, proximity sensors, push buttons, and equipment status signals.
Production Line Automation: Collecting digital signals from multiple machines and production stations.
Process Monitoring: Detecting operating states and signal changes in industrial processes.
Equipment Status Acquisition: Receiving signals from compatible sensors and switching devices.
Large-Scale PLC Systems: Expanding the digital input capacity of SIMATIC S7-1500 automation systems.
Distributed I/O Applications: Supporting compatible ET 200MP configurations in industrial control architectures.
Advantages
64 Digital Input Channels: Acquires a large number of digital signals through a single module.
24 V DC Operation: Supports a common industrial control voltage.
Sinking and Sourcing Input Support: Accommodates compatible field wiring arrangements.
Grouped Input Configuration: Organizes channels into four groups of 16.
Type 3 Input Characteristics: Follows IEC 61131 input characteristics for compatible industrial signal acquisition.
Standard Input Delay: Provides a typical input delay of 3.2 ms.
Flexible System Integration: Supports compatible SIMATIC S7-1500 and ET 200MP automation architectures.
Compact Module Width: The 35 mm width helps optimize space in modular control systems.
Technical FAQs
Q1: What is the Siemens 6ES7521-1BP00-0AA0?
It is a SIMATIC S7-1500 SM 521 digital input module, designated DI 64x24VDC SNK/SRC BA, for acquiring digital signals from industrial field devices.
Q2: How many digital inputs does the module provide?
It provides 64 digital input channels arranged in four groups of 16.
Q3: What is the rated input voltage?
The rated input voltage is 24 V DC, with a permissible range of 19.2–28.8 V DC.
Q4: Does the module support both sinking and sourcing inputs?
Yes. It supports sinking and sourcing input arrangements, provided the field wiring follows the specified electrical requirements.
Q5: What is the typical input delay?
The typical input delay is 3.2 ms. The delay is not parameterizable on this standard input variant.
Q6: Does this module support counter functions?
No. The module is designed for standard digital input acquisition and does not support counter operating mode.
Q7: Does it support hardware interrupts?
No. Hardware interrupt functionality is not supported on this module variant.
Q8: Which engineering software can configure the module?
It can be configured using compatible STEP 7 engineering software. TIA Portal integration is supported from V16 with the appropriate hardware support package or V17, subject to the installed system configuration.
Q9: Can the module be used in an ET 200MP system?
Yes. It is designed for compatible SIMATIC S7-1500 and ET 200MP configurations.
Q10: What should be checked before replacing the module?
Confirm the full order number, 64-channel configuration, input voltage, wiring arrangement, required connector accessories, controller compatibility, and engineering software version.
