IEC 61131 SIMATIC S7 1500 CPU PLC 6ES7521-1BL10-0AA0

SIMATIC S7 1500 PLC 6ES7521-1BL10-0AA0

I. Product Description:

The SIMATIC 6ES7521-1BL10-0AA0 is a digital input module for the SIMATIC SIMATIC S7-1500 series; its full model number is DI 32x24VDC BA. It is a high-density (32-point) basic (BA) input module designed to expand the number of digital input points for the S7-1500 PLC system

32 digital input channels, PNP type (P-reading), compliant with the IEC 61131 Type 3 standard

Fixed, typical value 3.2 ms, range 3 ms to 4 ms, not configurable

Rated voltage 24 V DC (allowable range 19.2 V to 28.8 V); Powered from the backplane bus: 1.05 W; typical power consumption: 3 W

Horizontal installation: -30°C to 60°C; vertical installation: -30°C to 40°C

STEP 7 TIA Portal V13 and later, or STEP 7 V5.5 SP3 and later

II. Product Specifications:

SIMATIC 6ES7521-1BL10-0AA0｜SIMATIC S7-1500 DI 32x24 V DC BA

• Firmware Version: V1.0.0; firmware update supported;
• Digital Inputs: 32;
• Input Type: Type 3 according to IEC 61131;
• Input Characteristic: P-reading, sourcing/sinking input;
• Rated Input Voltage: 24 V DC;
• Permitted Input Voltage: 19.2 to 28.8 V DC supply range;
• Signal “0” Input Voltage: -30 to +5 V;
• Signal “1” Input Voltage: +11 to +30 V;
• Input Current: Approximately 2.7 mA at signal “1”;
• Input Delay: Typically 3.2 ms; standard input delay approximately 3 to 4 ms;
• Parameterizable Inputs: No;
• Counter Function: Not supported;
• MSI Function: Supported;
• Channel Grouping: 32 channels arranged in 2 groups of 16;
• Channel Isolation: Channels are electrically isolated from the backplane bus; channels are isolated from each other in groups of 16;
• I&M Data: Supports I&M0 to I&M3;
• Isochronous Mode: Not supported;
• Prioritized Startup: Supported;
• Diagnostics: Diagnostic functions available according to module configuration;
• Engineering Software: STEP 7 / TIA Portal; configurable/integrated from V13;
• PROFINET GSD: Supported from GSD version V2.3;
• PROFIBUS GSD: Supported from GSD version V1.0 / revision V5.1;
• Power Supply: 24 V DC;
• Power Consumption from Backplane Bus: 1.05 W;
• Typical Power Loss: 3 W;
• Front Connector: 40-pin Push-in front connector included in delivery;
• Installation Position: Supports horizontal and vertical mounting within the SIMATIC S7-1500 / ET 200MP system;
• Operating Temperature: 0 to 60 °C for horizontal mounting; 0 to 40 °C for vertical mounting;
• Dimensions (W × H × D): 25 × 147 × 129 mm;
• Weight: Approximately 260 g;
• Typical Applications: 24 V DC digital signal acquisition, sensor signal processing, machine automation, production lines, process monitoring, and distributed I/O applications within SIMATIC S7-1500 and ET 200MP automation systems.

III. Technical Parameters:

SIMATIC S7-1500 Digital input module, DI 32x24 V DC BA, 32 channels in groups of 16, Input delay typ. 3.2 ms, Input type 3 (IEC 61131); Delivery incl. front connector Push-in

IV. Industries Served:

SIMATIC 6ES7521-1BL10-0AA0 This module is suitable for tracking processes in the logistics and automotive industries, and is used to acquire signals from a large number of sensors, buttons, and switches

In production lines using the S7-1500 as the control core—such as production lines for new energy vehicle inverters or smart production lines for insulated cup coasters—these basic, high-density modules are a cost-effective solution for meeting high I/O demands

In large-scale projects requiring a large number of I/O points, this module is often used as part of an ET 200MP remote I/O station, communicating with the S7-1500 CPU via Profinet to enable flexible distributed control

V. Product Certificates:

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