Key Features
- 16 digital inputs: Digital input module with 16 channels in groups of 1.
- DI 16x 24…125 V UC HF: Product type designation: DI 16×24 … 125 V UC HF.
- Diagnostics and hardware interrupts: Diagnostics function and hardware interrupt support are included.
- Input delay setting: Input delay is 0.05..20 ms.
- Separate front connector: Front connector with screw terminals or push-in to be ordered separately.
- SIMATIC S7-1500 I/O module: Belongs to the SIMATIC S7-1500, I/O modules, Digital modules, SM 521 digital input modules category.
Applications
- 16-channel digital signal acquisition: Acquiring 16 digital input signals in groups of 1.
- Input event handling with interrupts: Using hardware interrupts and diagnostics for digital input event handling.
- Signal counting in DC operation: Using the counter function in DC operation.
Technical Summary
| Product type designation | DI 16×24 … 125 V UC HF |
|---|---|
| Number of digital inputs | 16 |
| Input voltage, rated value (DC) | 24 V; 48 V, 125 V |
| Input voltage, rated value (AC) | 24 V; 48 V, 125 V (50 – 60 Hz) |
| Input delay | 0.05..20 ms |
| Diagnostics function | Yes |
| Hardware interrupt | Yes |
| Front connector | screw terminals or push-in |
| Power consumption from the backplane bus | 1.2 W |
| Power loss, typ. | 2.2 W; At 24 V DC; 6.0 W at 125 V AC |
| Isolation tested with | 2 000 V DC |
Frequently Asked Questions
What is the Siemens 6ES7521-7EH00-0AB0 module used for?
It is a SIMATIC S7-1500 digital input module with 16 channels in groups of 1.
What input voltage does 6ES7521-7EH00-0AB0 support?
Rated input voltage is 24 V; 48 V, 125 V for DC and 24 V; 48 V, 125 V (50 – 60 Hz) for AC.
Does 6ES7521-7EH00-0AB0 include diagnostics and interrupts?
Yes. It includes diagnostics function and hardware interrupt support.
What wiring part is needed for this module?
The front connector with screw terminals or push-in is to be ordered separately.
