Product information
Overview
Applications
- Digital signal input: Accepts digital input signals through 16 parameterizable channels.
- Counter operation: Supports counter operation on Channel 0 and 1 with a maximum counting frequency of 6 kHz.
Key Features
- 16 digital input channels: Has 16 parameterizable digital inputs, with 16 inputs simultaneously controllable.
- 24…125 V UC input range: Supports rated input values of 24 V, 48 V, and 125 V DC, and 24 V, 48 V, and 125 V AC at 50 – 60 Hz.
- Configurable input delay: For standard inputs, the delay is parameterizable from 0.05 ms to 20 ms with DC; 20 ms is fixed with AC.
- Counter function: Supports up to 2 counters on Channel 0 and 1, with a maximum counting frequency of 6 kHz and 32 bit counting width; available from FS04.
- Diagnostics and interrupts: Has diagnostics, diagnostic alarms, hardware interrupts, wire-break diagnostics to I < 550 μA, and green and red diagnostic LEDs.
- Front connector ordered separately: The front connector is not included and must be ordered separately as a screw-terminal or push-in version.
Technical Summary
| Product type | DI 16×24 … 125 V UC HF |
|---|---|
| Digital inputs | 16 |
| Rated input value (DC) | 24 V; 48 V, 125 V |
| Rated input value (AC) | 24 V; 48 V, 125 V (50 – 60 Hz) |
| Input delay | 0.05 ms to 20 ms |
| Counter channels | 2; Channel 0 and 1 |
| Counting frequency, max. | 6 kHz |
| Power consumption from the backplane bus | 1.2 W |
| Firmware version | from V1.0.0 |
| Isolation | 2 000 V DC |
| Front connector | Screw terminals or push-in; ordered separately |
Frequently Asked Questions
What is the exact Siemens model and product type?
It is Siemens 6ES7521-7EH00-0AB0, product type DI 16×24 … 125 V UC HF.
How many digital inputs does the module have?
It has 16 parameterizable digital inputs, with 16 inputs simultaneously controllable.
What input voltages does it support?
Rated input values are 24 V, 48 V, and 125 V DC, or 24 V, 48 V, and 125 V AC at 50 – 60 Hz.
Is the front connector included?
It is without a front connector; the screw-terminal or push-in front connector must be ordered separately.
What information should I provide for a quotation?
Provide the required quantity, destination, requested date, and any project list for model-specific verification.
