Key Features
- 16-channel NAMUR digital input module: DI 16xNAMUR HF with 16 channels in groups of 8.
- 8.2 V sensor and encoder supply: For 8.2 V NAMUR encoder signals with 16 outputs, 2x 8.2 V DC.
- Integrated counting and pulse functions: Counting function up to 20 kHz with pulse stretching, chatter monitoring, and signal inversion diagnostics.
- Diagnostics and interrupts: Supports diagnostics, diagnostic alarms, hardware interrupts, and monitoring of the supply voltage and encoder power supply.
- Selection and installation details: Front connector with screw terminals or push-in is ordered separately; shielding components are included in the scope of supply.
Applications
- NAMUR encoder signal acquisition: Connects 8.2 V NAMUR encoder signals for digital input processing.
- High-speed pulse counting: Supports counting functions up to 20 kHz with forward and backward counting.
- Input diagnostics and interrupt handling: Provides diagnostics, hardware interrupts, and monitoring for supply voltage and encoder power supply.
Technical Summary
| Product type designation | DI 16xNAMUR HF |
|---|---|
| Number of digital inputs | 16; NAMUR |
| Channels per group | 16 channels in groups of 8 |
| Input voltage, rated value (DC) | 8.2 V |
| Supply voltage, rated value (DC) | 24 V |
| Supply voltage, permissible range | 19.2 V to 28.8 V |
| Current consumption, max. | 220 mA |
| Power consumption from the backplane bus | 0.6 W |
| Power loss, typ. | 3.7 W |
| Counter, max. number | 4; 4 counters max. 10 kHz or 2 counters max. 20 kHz + 2 counters max. 10 kHz; see manual for details |
| Counting frequency, max. | 20 kHz; See manual for details |
| Front connector | screw terminals or push-in |
Frequently Asked Questions
What is the Siemens 6ES7521-7TH00-0AB0 used for?
It is a SIMATIC S7-1500 DI 16xNAMUR HF digital input module for 16 NAMUR channels with 8.2 V sensor supply.
How many digital inputs does the 6ES7521-7TH00-0AB0 have?
It has 16 digital inputs, arranged in groups of 8.
What counting performance does the module support?
It supports an integrated counting function up to 20 kHz and up to 4 counters, with details depending on the selected counter arrangement.
What supply voltage and installation details should be checked before ordering?
The module uses 24 V DC supply with a permissible range of 19.2 V to 28.8 V, and the front connector with screw terminals or push-in is ordered separately.
