Siemens Industrial Automation

6ES7521-7TH00-0AB0

6ES7521-7TH00-0AB0 Siemens SIMATIC S7-1500 digital input module with 16 NAMUR channels, 8.2 V encoder supply, 20 kHz counting and V1.0.0 firmware. Check a legacy-part verification request.

Complete Product Information
Product Code
6ES7521-7TH00-0AB0
Dimensions
15.3 × 14.9 × 4.3 cm
Weight
0.425 kg
Lifecycle
Active Product
Availability
Check availability with quotation
Lead Time
Confirmed with quotation
Product Attachment
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Availability, lead time, condition and warranty are confirmed for each quotation.

Product Information

Technical Product Information

Product Description

Key Features

  • Digital input configuration: 16 NAMUR digital inputs, arranged in groups of 8, with all 16 inputs simultaneously controllable.
  • NAMUR encoder supply: 16 outputs with 2x 8.2 V DC encoder supply; maximum output current is 100 mA per group and 200 mA per module.
  • Counting function: Up to 4 counters with a maximum of 10 kHz, or 2 counters at a maximum of 20 kHz plus 2 counters at a maximum of 10 kHz; counting width is 32 bit.
  • Supply and protection: Rated supply voltage is 24 V DC, with a permissible range of 19.2 V to 28.8 V, reverse polarity protection, and short-circuit protection for the encoder supply.
  • Firmware and diagnostics: Firmware version V1.0.0, firmware update possible, diagnostic and hardware interrupt functions, and RUN, ERROR, PWR and channel-status LEDs.

Applications

  • Digital signal acquisition: Acquires signals through 16 parameterizable NAMUR digital inputs.
  • Pulse counting: Counts pulses with a maximum counting frequency of 20 kHz.
  • Input diagnostics: Provides supply-voltage, encoder-power-supply, wire-break and diagnostic alarm monitoring.

Technical Summary

Product type DI 16xNAMUR HF
Product lifecycle Active Product
Digital inputs 16; NAMUR
Rated supply voltage 24 V DC
Permissible supply voltage 19.2 V to 28.8 V DC
NAMUR encoder supply 2x 8.2 V DC
Maximum counting frequency 20 kHz; See manual for details
Firmware version V1.0.0
PROFINET GSD version/GSD revision V2.3 / –
Front connector Screw terminals or push-in; to be ordered separately
Mounting and supply scope All necessary components for shielding included in the scope of supply

Frequently Asked Questions

What exact order number should be confirmed for this Siemens module?

Confirm order number 6ES7521-7TH00-0AB0 and product type DI 16xNAMUR HF.

Which firmware version does the module have?

The firmware version is V1.0.0, and firmware update is possible.

What input and encoder configuration should be checked?

Check the 16 NAMUR inputs in groups of 8 and the 2x 8.2 V DC encoder supply.

Is the front connector included?

It is without the front connector; screw-terminal or push-in front connectors must be ordered separately.

Product Information

RFQ Information

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01Which product reference should I send?

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02How are supply terms confirmed?

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03What helps with replacement requests?

Share the installed model, application, electrical and mechanical requirements, communication interface and a clear nameplate photo.

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