Product Overview
Technical Summary
| Product type designation | DI 16xNAMUR HF |
|---|---|
| Number of digital inputs | 16; NAMUR |
| Channels | 16 channels in groups of 8 |
| NAMUR encoder supply | 8.2 V |
| Maximum counting frequency | 20 kHz; See manual for details |
| Input delay | 0.05 … 20 ms |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage range | 19.2 V to 28.8 V DC |
| Firmware version | V1.0.0 |
| PROFINET GSD version | V2.3 / – |
| Front connector | Screw terminals or push-in; to be ordered separately |
Key Features
- Product designation: SIMATIC S7-1500 digital input module DI 16xNAMUR HF.
- Digital inputs: 16 NAMUR digital inputs in groups of 8; all 16 inputs can be controlled simultaneously.
- NAMUR encoder supply: 16 outputs, 2x 8.2 V DC, with short-circuit protection; maximum output current is 100 mA per group and 200 mA per module.
- Counting function: Up to 4 counters at maximum 10 kHz, or 2 counters at maximum 20 kHz plus 2 counters at maximum 10 kHz; 32-bit counting width.
- Input delay: Parameterizable input delay from 0.05 … 20 ms for NAMUR inputs.
- Interfaces and supply: Rated supply voltage is 24 V DC, with a permissible range of 19.2 V to 28.8 V; PROFIBUS and PROFINET are supported.
Applications
- Pulse counting: Counts pulses with the integrated counting function up to 20 kHz.
- Input signal diagnostics: Monitors encoder power supply, detects wire break to I < 350 μA, and provides diagnostic alarms and hardware interrupts.
Frequently Asked Questions
What does Siemens 6ES7521-7TH00-0AB0 identify?
It identifies the SIMATIC S7-1500 digital input module DI 16xNAMUR HF with 16 NAMUR channels.
Which specifications distinguish this MLFB variant?
The variant has 16 channels in groups of 8, 8.2 V NAMUR encoder supply, parameterizable input delay of 0.05 … 20 ms, and counting up to 20 kHz.
What should be checked for the electrical configuration?
Check the 24 V DC rated supply voltage, the permissible range of 19.2 V to 28.8 V, 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 versions must be ordered separately.
