Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | DI 16xNAMUR HF |
| Digital inputs | 16; NAMUR |
| Encoder supply | 2x 8.2 V DC; 100 mA max. per group |
| Counting frequency, max. | 20 kHz |
| Input delay | 0.05 to 20 ms |
| Rated supply voltage | 24 V DC |
| Permissible supply range | 19.2 V to 28.8 V DC |
| Current consumption, max. | 220 mA |
| Front connector | Screw terminals or push-in; ordered separately |
Applications
- NAMUR signal acquisition: Acquires signals from NAMUR encoders, changeover contacts, and 2-wire sensors.
- Pulse counting: Counts input pulses with a maximum counting frequency of 20 kHz and selectable counting direction.
- Input signal processing: Processes digital input edges, pulse extension, signal-change flutter, and gate start/stop functions.
Key Features
- 16-channel NAMUR input: DI 16xNAMUR HF module with 16 digital NAMUR inputs, simultaneously controllable.
- NAMUR encoder supply: Provides 16 outputs as 2x 8.2 V DC, with a maximum output current of 100 mA per group and 200 mA per module.
- Counting function: Supports up to 4 counters; the maximum configuration is 4 counters at 10 kHz or 2 counters at 20 kHz plus 2 counters at 10 kHz. Counting width is 32 bit.
- Parameterizable signal processing: Input delay is parameterizable from 0.05 to 20 ms. Pulse extension supports 0.05 s, 0.1 s, 0.2 s, 0.5 s, 1 s, and 2 s.
- Diagnostics and interrupts: Includes chatter monitoring, signal inversion diagnostics, diagnostic alarms, hardware interrupts, wire-break monitoring to I < 350 μA, and RUN, ERROR, PWR, and channel-status LEDs.
- Supply and connection scope: Rated supply voltage is 24 V DC with a permissible range of 19.2 V to 28.8 V. All necessary shielding components are included; the front connector with screw terminals or push-in must be ordered separately.
Frequently Asked Questions
1. How many NAMUR inputs does the 6ES7521-7TH00-0AB0 have?
It has 16 digital NAMUR inputs in groups of 8, and all 16 inputs can be controlled simultaneously.
2. What input signals can this module connect?
It supports NAMUR encoders, changeover contacts according to EN 60947 with no CO contact, single contacts, and 2-wire sensors.
3. What is the maximum counting frequency?
The maximum counting frequency is 20 kHz. The module supports 4 counters at 10 kHz or 2 counters at 20 kHz plus 2 counters at 10 kHz; see the manual for details.
4. Is the front connector included?
It is without the front connector. The connector with screw terminals or push-in must be ordered separately.
