Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SM 1221, DI 8×24 V DC |
| Digital inputs | 8, in groups of 2 |
| Rated input voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Signal 0 input voltage | 5 V DC at 1 mA |
| Signal 1 input voltage | 15 V DC at 2.5 mA |
| Input delay options | 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four |
| Protection | IP20 |
| Front connector | Required |
Applications
- Digital signal acquisition: Acquires digital input signals through 8 digital inputs.
- Interrupt signal acquisition: Supports interrupt inputs with diagnostics, diagnostic alarms, and input-status LED indication.
Key Features
- Digital inputs: 8 digital inputs, in groups of 2, with an IEC 61131 type 1 input characteristic.
- Input voltage: Rated input voltage: 24 V DC; signal 0: 5 V DC at 1 mA; signal 1: 15 V DC at 2.5 mA.
- Input timing: Parameterizable input delays: 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four.
- Diagnostics and interrupts: Interrupt inputs support diagnostics, diagnostic alarms, and LED status indication.
- Supply and protection: Permissible supply voltage: 20.4 V to 28.8 V DC; IP20 protection; conformal coating.
- Connection and dimensions: Required front connector; 45 mm width, 100 mm height, 75 mm depth; approximately 170 g.
Frequently Asked Questions
1. How many digital inputs does the 6AG1221-1BF32-2XB0 have?
It has 8 digital inputs in groups of 2.
2. What input voltage does this module use?
The rated input voltage is 24 V DC. Signal 0 is 5 V DC at 1 mA, and signal 1 is 15 V DC at 2.5 mA.
3. Which input delays are parameterizable?
The selectable delays are 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four.
4. Does the module provide diagnostics for interrupt inputs?
Yes. It has a diagnostics function, diagnostic alarm, and LED status indication for the inputs.
5. What connection is required?
A front connector is required.
