SIEMENS

Siemens 6ES7521-1BL00-0AB0 SIMATIC S7-1500 32DI 24V DC HF Input Module

Name: Siemens 6ES7521-1BL00-0AB0 SIMATIC S7-1500 32DI 24V DC HF Input Module
Brand: SIEMENS
SKU: 6ES7521-1BL00-0AB0
Price: 362.99 USD
Availability: InStock

Siemens 6ES7521-1BL00-0AB0 SIMATIC S7-1500 32DI 24V DC HF Input Module

$362.99 USD

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Model Number 6ES7521-1BL00-0AB0

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YingZhou Industrial Automation | Product Information

Siemens 6ES7521-1BL00-0AB0 SIMATIC S7-1500 Digital Input Module

SIMATIC S7-1500 | SM 521 | 32 Digital Inputs | 24V DC | HF

✓ IN STOCK & AVAILABLE TO ORDER | Actual Packaging Photos | Exact Model Identified

Specification	Verified Product Data
Manufacturer	Siemens AG
Catalog Number	6ES7521-1BL00-0AB0
Product Series	SIMATIC S7-1500 / ET 200MP
Product Family	SM 521
Product Type	High Feature Digital Input Module
Module Designation	DI 32x24VDC HF
Digital Input Channels	32
Channel Grouping	2 groups of 16 channels
Rated Supply Voltage	24V DC
Supply Voltage Range	19.2–28.8V DC
Rated Input Signal Voltage	24V DC
Input Signal 0	−30 to +5V
Input Signal 1	+11 to +30V
Input Current at Signal 1	Typically 2.5mA
Input Type	IEC 61131-2 Type 3
Configurable Input Delay	0.05–20ms
Counter Inputs	Up to 2
Maximum Counter Frequency	6kHz (FS04 / FW V2.2.1 or higher)
Counter Width	32 Bit
Diagnostic Functions	Supported
Hardware Interrupts	Supported
Isochronous Mode	Supported
Reverse Polarity Protection	Yes
Backplane Bus Power Consumption	1.1W
Typical Power Loss	4.2W
Front Connector	Order separately
Manufacturer Net Weight	Approximately 0.321kg
Packaging Dimensions	15.1 × 15.1 × 4.7cm
Country of Origin	Germany
EAN	4025515080015
Product Lifecycle	PM300 — Active Product

Product Overview

The Siemens 6ES7521-1BL00-0AB0 is a SIMATIC S7-1500 SM 521 High Feature digital input module designed for industrial PLC signal acquisition. The module provides 32 digital input channels arranged in two groups of 16, with a rated digital input voltage of 24V DC. It supports parameterizable input delays from 0.05ms to 20ms, enabling input signal filtering for supported automation requirements. Two inputs can be configured for counter operation with a maximum counting frequency of 6kHz when the required functional status and firmware conditions are met. Additional manufacturer-specified capabilities include diagnostic functions, hardware interrupts, isochronous operation and reverse polarity protection. This module belongs to the SM 521 digital input product family and is listed by Siemens as an Active Product. A compatible front connector is required and must be ordered separately. The supplied actual packaging photographs show the matching catalog number, S7-1500 product identification, High Feature designation and Germany origin marking. For maintenance replacement or new automation installations, buyers should confirm the exact Siemens catalog number and controller configuration before ordering.

Key Product Features

SIMATIC S7-1500 SM 521 — Siemens High Feature digital input module for industrial PLC systems.
32 Digital Inputs — Thirty-two input channels arranged in two groups of sixteen.
24V DC Inputs — Designed for standard industrial digital input signals.
Configurable Input Delay — Parameterizable input delay from 0.05ms to 20ms.
Integrated Counter Functions — Up to two inputs support counting functions under specified firmware conditions.
Diagnostic Functions — Supports module diagnostic monitoring and relevant alarms.
Hardware Interrupt Support — Supports interrupt-based processing in suitable controller configurations.
Isochronous Operation — Supports isochronous mode for configured automation systems.
Reverse Polarity Protection — Manufacturer-specified protection for the DC power supply.
Separate Front Connector — Compatible front connector must be purchased separately.
Active Product — Siemens PM300 lifecycle classification.
In Stock — Available according to YINGZHOU inventory information.

Actual Product Verification

✓ Actual packaging photographs supplied

✓ Packaging catalog number: 6ES7521-1BL00-0AB0

✓ Packaging product family: SIMATIC S7-1500

✓ Packaging module designation: DI 32x24VDC HF

✓ Packaging firmware marking: FW V2.2.1

✓ Packaging functional status: FS 07

✓ Packaging date marking: 11.2023

✓ Packaging country marking: Made in Germany

✓ Packaging model matches the requested catalog number

• Product body nameplate not visible in the supplied photographs

• Functional testing documentation not supplied

• Front connector inclusion has not been independently confirmed

In Stock & Available to Order

Siemens 6ES7521-1BL00-0AB0 SIMATIC S7-1500 SM 521 DI 32x24VDC HF digital input module is listed as in stock according to YINGZHOU inventory information. Actual packaging photographs show the exact catalog number and model identification. Buyers should confirm the required quantity, PLC system, front connector requirements and shipping destination before ordering. For multiple units or industrial maintenance projects, contact YINGZHOU for a quantity quotation.

IN STOCK