Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | DI 32x24VDC HF |
| Digital inputs | 32 |
| Rated input voltage | 24 V DC |
| Input signal ranges | Signal "0": -30 to +5 V; signal "1": +11 to +30 V |
| Counter inputs | 2 maximum; 6 kHz maximum counting frequency with FS04 and firmware V2.2.1 or higher |
| Input delay | 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms |
| Supply voltage | 19.2 to 28.8 V DC permissible range; 24 V DC rated value |
| Diagnostics | Supply-voltage monitoring, wire-break detection, diagnostic alarm, hardware interrupt |
| Isolation | Between channels and between channels and backplane bus; 707 V DC type test |
| Front connector | Screw terminals or push-in terminals; ordered separately |
Applications
- Digital signal acquisition: Acquires 32 parameterizable 24 V DC digital input signals, including positive- and negative-edge evaluation.
- Counter signal processing: Uses up to 2 digital inputs as counters with 32-bit counting width and up counting direction.
Key Features
- 32 digital inputs: DI 32x24VDC HF module with 32 parameterizable digital inputs in groups of 16.
- Counter function: 2 inputs can be used as counters with a maximum counting frequency of 6 kHz, with FS04 and firmware V2.2.1 or higher.
- 24 V DC input signals: Rated input voltage is 24 V DC; signal "0" is -30 to +5 V and signal "1" is +11 to +30 V.
- Adjustable input delay: Input delay is parameterizable at 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms.
- Diagnostics and interrupts: The module has diagnostics, diagnostic alarms, hardware interrupts, supply-voltage monitoring, wire-break detection, and channel and module diagnostic LEDs.
- Separate front connector: A front connector with screw terminals or push-in terminals is to be ordered separately.
Frequently Asked Questions
1. How many digital inputs does Siemens 6ES7521-1BL00-0AB0 have?
It has 32 parameterizable digital inputs in groups of 16.
2. What input signal ranges does this module support?
The rated input voltage is 24 V DC. Signal "0" is -30 to +5 V, and signal "1" is +11 to +30 V.
3. Can the module process counter signals?
Yes. Up to 2 inputs can be used as counters with a 32-bit counting width and a maximum counting frequency of 6 kHz with FS04 and firmware V2.2.1 or higher.
4. Is the front connector included?
It is without the front connector. A front connector with screw terminals or push-in terminals must be ordered separately.
