Product information
Overview
Applications
- Digital signal acquisition: Supports acquisition of 16 digital input signals with parameterizable input processing.
- Encoder counting: Supports integrated counting for 24 V encoders with a maximum counting frequency of 20 kHz.
- Signal diagnostics: Supports monitoring of supply voltage, encoder power supply, wire breaks, channel status, and module diagnostics.
Key Features
- 16-channel digital input: Provides 16 digital inputs in groups of 8, with parameterizable inputs and a type 2 input characteristic in accordance with IEC 61131.
- 24 V DC encoder supply: Provides 16 outputs as 2x 24 V DC, with short-circuit protection and maximum output current of 150 mA per group or 300 mA per module.
- Integrated counting: Supports up to 4 counters and a maximum counting frequency of 20 kHz; the configuration supports 4 totalizers at maximum 10 kHz or 2 totalizers at maximum 20 kHz plus 2 totalizers at maximum 10 kHz.
- Parameterizable signal processing: Supports input delay from 0.05 to 20 ms, pulse extension from 0.05 s to 2 s, positive and negative edge evaluation, and chatter monitoring.
- Isochronous operation: Supports isochronous mode with a minimum bus cycle time of 250 μs and filtering and processing time of 60 μs at 50 μs filter time.
- Diagnostics and interrupts: Provides diagnostics, diagnostic alarms, hardware interrupts, supply-voltage monitoring, encoder power-supply short-circuit monitoring, and wire-break detection to I < 350 μA.
Technical Summary
| Product type | DI 16×24 V DC HS |
|---|---|
| Digital inputs | 16 |
| Input voltage, rated value (DC) | 24 V |
| Supply voltage, rated value (DC) | 24 V |
| Encoder supply | 16; 2x 24 V DC |
| Counting frequency, max. | 20 kHz |
| Input delay, parameterizable | 0.05 / 0.1 / 0.4 / 0.8 / 1.6 / 3.2 / 12.8 / 20 ms |
| Isochronous bus cycle time, min. | 250 μs |
| Firmware version | V1.0.0 |
| Front connector | Screw terminals or push-in; shield set separately, if applicable |
Frequently Asked Questions
What is the exact product type of Siemens 6ES7521-7BH00-0AB0?
The product type designation is DI 16×24 V DC HS.
How many digital inputs does the module have?
It has 16 digital inputs in groups of 8.
What counting frequency does it support?
The maximum counting frequency is 20 kHz.
What connector options are provided?
The front connector uses screw terminals or push-in terminals. The shield set is ordered separately, if applicable.
