Siemens 6ES7521-1BL10-0AA0 Digital Input Module
The Siemens 6ES7-521-1BL10-0AA0 digital input module provides 32 channels of reliable 24 V DC signal acquisition, organized in 2 groups of 16. With a push-in connector included and IEC 61131 Type 3 compatibility, this module is built for efficient wiring, fast commissioning, and robust system integration.
Technical Specifications
Model: 6ES7521-1BL10-0AA0 Siemens
Series: SIMATIC S7-1500
Module Type: DI 32×24 V DC BA
Input Channels: 32 Digital Inputs
Input Voltage: 24 V DC
Channel Grouping: 2 × 16 channels
Input Delay (Typical): 3.2 ms
Input Type: Type 3 (IEC 61131)
Front Connector: Push-in (included)
Lifecycle Status: Active
Function & Application
- Purpose: High-density digital input module for reading 24 V DC signals in SIMATIC S7-1500 control systems.
- Typical Applications:
- Large-scale digital input acquisition for machine and plant control.
- High-channel-count installations in automation cabinets.
- Cost-effective I/O configuration with grouped input channels.
- Projects requiring compliance with IEC 61131 Input Type 3.
Performance & Features
- 32 Digital Inputs. Ideal for large input signal handling within compact module space.
- Grouped Inputs. 2 × 16 grouping for organized signal routing.
- Push-In Front Connector. Simplifies wiring and ensures vibration-resistant installation.
- Reliable Switching Delay. 3.2 ms per channel ensures filtering against signal noise.
- IEC 61131 Compliance. Compatible with industry-standard input definitions.
Recommended Accessories
Delivery & Compliance
- Packaging Dimensions: 15.10 × 20.30 × 3.70 cm
- Net Weight: 0.361 kg
- Packaging Quantity: 1 Piece
- Country of Origin: Germany
- Estimated Dispatch Time: 1 Working Day
Product Compliance & Classification
- RoHS Compliance: Since 21.10.2013
- WEEE Take-Back Obligation: Yes
- SCIP Number: bdec4f04-7ab3-40ed-adf3-e7fe549549a0
- REACH Substances:
- Lead (CAS 7439-92-1) > 0.1%
- Lead monoxide (CAS 1317-36-8) > 0.1%
- Silicic acid, lead salt (CAS 11120-22-2) > 0.1%
- Bisphenol A (CAS 80-05-7) > 0.1%
- Commodity Code: 85389091
- Catalog ID: ST73
- Product Group: 4501
- Group Code: R151
- Product Class: A – Stock item, returnable
- EAN: 4047623402527
- UPC: 887621779078
Key Features & Benefits:
✅ 32 Input Channels. High channel density saves panel space.
✅ Push-In Connector Included. Speeds up installation and maintenance.
✅ Input Delay of 3.2 ms. Filters out brief noise pulses for cleaner signals.
✅ Grouped Inputs. Makes field wiring neater and more manageable.
✅ Designed for S7-1500. Fully integrates into Siemens’ most advanced PLC platform.
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