Key Features
- 32 digital inputs: Digital input module with 32 channels in groups of 16.
- Counter-capable inputs: 2 inputs can be used as counters.
- 24 V DC supply: Rated value (DC): 24 V; permissible range: 19.2 V to 28.8 V.
- Diagnostics and interrupts: Diagnostics, diagnostic alarm, and hardware interrupt support are included.
- Front connector order item: Front connector with screw terminals or push-in must be ordered separately.
Technical Summary
| Product type designation | DI 32x24VDC HF |
|---|---|
| Digital inputs | 32 |
| Counter inputs | 2 |
| 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 |
| Current consumption, max. | 40 mA; 20 mA per group with 24 V DC supply |
| Power consumption from the backplane bus | 1.1 W |
| Power loss, typ. | 4.2 W |
| Input delay | 0.05..20 ms |
| Diagnostics function | Yes |
| Isolation tested with | 707 V DC (type test) |
Applications
- 24 V DC digital signal acquisition: Collects 24 V DC digital input signals in a SIMATIC S7-1500 system.
- Input-based counting tasks: Supports counting with up to 2 inputs used as counters.
Frequently Asked Questions
What is the exact Siemens order number for this digital input module?
The exact order number is 6ES7521-1BL00-0AB0.
How many digital inputs does 6ES7521-1BL00-0AB0 have?
It has 32 digital inputs in groups of 16.
What supply voltage does the DI 32x24VDC HF module use?
The rated supply voltage is 24 V DC, with a permissible range from 19.2 V to 28.8 V.
Does 6ES7521-1BL00-0AB0 support counter inputs?
Yes. 2 inputs can be used as counters.
What connector is required for this module?
A front connector with screw terminals or push-in must be ordered separately.
