Key Features
- 16 digital inputs: Digital input module with 16 channels in groups of 8.
- 24 V encoder supply: Sensor supply 24 V DC with 16 outputs, 2x 24 V DC.
- Integrated counting function: Counting frequency, max.: 20 kHz.
- Diagnostics and interrupts: Signal inversion diagnostics, chatter monitoring, hardware interrupts, and diagnostic alarms.
- Front connector options: Front connector: screw terminals or push-in.
Applications
- 24 V digital input acquisition: Acquires 16 digital input signals in a SIMATIC S7-1500 system.
- Pulse counting up to 20 kHz: Supports counting tasks with an integrated counting function up to 20 kHz.
- Isochronous input processing: Supports input processing in isochronous mode up to a 250 µs bus cycle time.
Technical Summary
| Product type designation | DI 16×24 V DC HS |
|---|---|
| Number of digital inputs | 16 |
| Sensor supply | 24 V DC |
| Supply voltage, rated value (DC) | 24 V |
| Supply voltage, permissible range, lower limit (DC) | 19.2 V |
| Supply voltage, permissible range, upper limit (DC) | 28.8 V |
| Input delay, parameterizable | 0.05..20 ms |
| Isochronous mode, bus cycle time (TDP), min. | 250 µs |
| Counting frequency, max. | 20 kHz |
| Encoder supply output current per module, max. | 300 mA |
| Diagnostics function | Yes |
| Front connector | screw terminals or push-in |
Frequently Asked Questions
What is Siemens 6ES7521-7BH00-0AB0?
It is a SIMATIC S7-1500 digital input module, DI 16×24 V DC HS.
How many digital inputs does 6ES7521-7BH00-0AB0 provide?
It provides 16 digital inputs in groups of 8.
What input delay range does this module support?
The input delay is parameterizable from 0.05..20 ms.
What is the maximum counting frequency on this module?
The integrated counting function supports up to 20 kHz.
Which front connector options are available for 6ES7521-7BH00-0AB0?
Front connector options are screw terminals or push-in.
