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SIEMENS SIMATIC S7-1500 6ES7521-1BH00-0AB0 DI 16x24 V DC HF Digital Input Module | Original New

SIEMENS SIMATIC S7-1500 6ES7521-1BH00-0AB0 DI 16x24 V DC HF Digital Input Module | Original New

SIEMENS · SIMATIC S7-1500 6ES7521-1BH00-0AB0 DI 16x24 V DC HF Digital Input Module	HIGH FEATURE INPUT 16 DI 24 V DC · Type 3
Official description: Digital input module DI 16x24 V DC HF; 16 channels in one group; two inputs can be used as counters; diagnostics and hardware interrupts; front connector ordered separately. Order check: Confirm the front connector, channel configuration and engineering version before ordering. Email Inquiry WhatsApp [email protected] \| +86 18159889985

Overview
Applications
Technical Data
Interfaces
Environment
Selection
Availability
Models
FAQ & Quote
Recommended Products

OFFICIAL PRODUCT OVERVIEW

SM 521 high-feature digital input module

This S7-1500 signal module acquires 16 digital 24 V DC input signals. Siemens specifies parameterizable input delay, diagnostics, hardware interrupts and two counter-capable inputs.

Channels	16 digital inputs
Input groups	1 group of 16
Input standard	IEC 61131 Type 3
Counter inputs	Up to 2

Applications

FUNCTION AND APPLICATION

Fast, diagnosable input acquisition

Use the module where an S7-1500 station needs dense 24 V DC input acquisition with channel diagnostics, hardware interrupts or two integrated counter channels.

• Machine status and limit-switch signals

• Event-driven inputs with hardware interrupts

• Counter functions up to two channels

Technical Data

Official Technical Data

Product type	DI 16x24VDC HF
Rated voltage	24 V DC
Permissible supply	19.2 to 28.8 V DC
Input delay	0.05 to 20 ms, parameterizable
Counter function	2 inputs, up to 6 kHz, 32-bit
Diagnostics	Diagnostic alarms and hardware interrupts
Engineering	TIA Portal V13 SP1 or higher per Siemens data
Firmware	V2.2.0

Interfaces

CONSTRUCTION

16 channels
35 mm class

Connection and module details

• Front connector is ordered separately

• Screw-terminal or push-in front connector options

• I&M0 to I&M3 identification data

• Isochronous operation supported

Environment

Protection and Operating Limits

Protection	Installation in the S7-1500 system; cabinet conditions apply
Shielded cable	Confirm application-specific cable design
Diagnostics LEDs	RUN, ERROR, power and channel indications
Safety use	Not a fail-safe input module

Selection

BEFORE INSTALLATION

Match the front connector and project

• Confirm complete article number 6ES7521-1BH00-0AB0

• Select the correct screw or push-in front connector

• Check TIA Portal and CPU firmware compatibility

• Verify counter and interrupt requirements

VERIFICATION CHECKLIST

Confirm before quotation

□ Complete Siemens article number	□ Counter channel requirement
□ Existing S7-1500 CPU and rack	□ Hardware-interrupt assignment
□ Front connector type	□ Field voltage and sensor type
□ Required input delay	□ Current overall and nameplate photo

Availability

Availability and Commercial Information

Physical stock	Confirm before quotation
Condition	New, used or refurbished status is confirmed in writing
Current photos	Overall and nameplate photos available on request
Warranty	Subject to verification
Dispatch	Confirm before quotation
Testing	Test scope available on request
Payment	Supported methods confirmed on quotation
Quote response	Subject to verification
Transaction records	Company and transaction documents available on request

Models

PRODUCT CATALOG

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