Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SM 1221, DI 16×24 V DC |
| Digital inputs | 16 |
| Input voltage, rated value | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Input signal 0 | 5 V DC at 1 mA |
| Input signal 1 | 15 V DC at 2.5 mA |
| Input timing | 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 |
| Operating ambient temperature | -20 °C to 60 °C |
Applications
- Digital signal acquisition: Acquires digital input signals through 16 DI channels for 24 V DC signals.
- Interrupt input signal acquisition: Supports interrupt inputs with shielded cable up to 500 m or unshielded cable up to 300 m.
Key Features
- Digital inputs: 16 digital inputs for 24 V DC signals, arranged in groups of 4.
- Input signal thresholds: Signal 0: 5 V DC at 1 mA; signal 1: 15 V DC at 2.5 mA.
- Parameterizable input timing: Input timing is selectable in groups of four: 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms.
- Diagnostics and isolation: Diagnostic alarm and input-status LED indication are provided. Digital inputs have potential separation between channels in groups of 4.
- SIPLUS environmental protection: Conformal coating has Class 2 for high reliability according to EN 61086 and Type 1 protection according to EN 60664-3.
Frequently Asked Questions
1. How many digital inputs does the 6AG1221-1BH32-4XB0 have?
It has 16 digital inputs, arranged in groups of 4.
2. What input signal levels does this module support?
Signal 0 is 5 V DC at 1 mA, and signal 1 is 15 V DC at 2.5 mA.
3. What supply voltage range does the module use?
The rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
4. Does the module provide input diagnostics?
Yes. It has a diagnostic alarm and an LED indication for input status.
5. What connection and mounting details should be verified before inquiry?
A front connector is required. The module measures 45 mm x 100 mm x 75 mm and weighs approximately 210 g.
