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6ES7521-1BL00-0AB0 Siemens

Name: 6ES7521-1BL00-0AB0 Siemens
Brand: Siemens
SKU: 6ES7521-1BL00-0AB0
Price: 682.0 USD
Availability: InStock

$682.00 - $825.00

$682.00

$682.00 - $825.00

$682.00

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Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The Siemens 6ES7521-1BL00-0AB0 is a SIMATIC S7-1500 digital input module (DI 32x24 V DC HF) designed for mounting on SM 521 racks in industrial automation systems. The module provides 32 DC input channels organized in two groups of 16, with two channels configurable as high-speed counters. It supports diagnostics, isochronous mode, prioritized startup, and integrates via front connector options (screw-terminal or push-in connectors). The module interfaces with TIA Portal (from V13 SP1) and supports PROFIBUS and PROFINET GSD files. Typical applications include input expansion on S7-1500 control cabinets, machine-level status monitoring, and fast counter signal capture during motion control.

Best Suited For

S7-1500 I/O expansion in control cabinets
High-speed counter applications (up to 6 kHz)
Machine status monitoring with diagnostic feedback
Systems requiring precise input timing via isochronous mode

Digital inputs

32 channels

High-speed counters

2 channels, up to 6 kHz

Supply voltage

24 V DC (19.2-28.8 V)

Power consumption

1.1 W (backplane); power loss ≈ 4.2 W

Operating temperature

-30 °C to 60 °C (horizontal)

Technical Specifications

I/O & Electrical

Digital input count

32

Counter channels

2, up to 6 kHz, 32-bit, up/down

Input voltage (signal "1")

+11 to +30 V

Input voltage (signal "0")

-30 to +5 V

Input current (typical at "1")

2.5 mA

Communication & Power

Supply voltage

24 V DC (19.2-28.8 V)

Reverse polarity protection

Yes

Current consumption (max)

40 mA (20 mA per group)

Backplane power consumption

1.1 W

Typical power loss

4.2 W

Physical & Environmental

Dimensions (W × H × D)

35 mm × 147 mm × 129 mm

Weight

≈ 260 g

Operating temperature (horizontal)

-30 °C to 60 °C

Operating temperature (vertical)

-30 °C to 40 °C

Isolation tested

707 V DC (type test)

Certifications

ULCEUKCAIECExATEXEACRCM

Approvals include UL, CE, UKCA, KC, RCM, EAC, FM, IECEx, ATEX, maritime classifications (ABS, BV, DNV, LR, RINA, RMRS), China RoHS, Eco declarations (SEP, EPD).

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Rockwell Automation documentation

Access official manuals, datasheets, and lifecycle information for this part directly from Rockwell Automation.

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