Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SM 1221, DI 8×24 V DC |
| Digital input channels | 8, in groups of 2 |
| Rated input voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Signal 0 | 5 V DC at 1 mA |
| Signal 1 | 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 |
| Operating ambient temperature | -20 °C to 60 °C; start-up at 0 °C |
| Front connector | Required |
Applications
- Digital signal acquisition: The module acquires 24 V DC digital signals through 8 digital inputs.
- Interrupt input diagnostics: The module supports parameterizable interrupt inputs with diagnostics, diagnostic alarms, and input-status LED indication.
Key Features
- Digital inputs: 8 digital inputs for 24 V DC signals, arranged in groups of 2.
- Input signal thresholds: Signal 0: 5 V DC at 1 mA; signal 1: 15 V DC at 2.5 mA.
- Supply voltage: Rated supply and input voltage: 24 V DC; permissible supply range: 20.4 V to 28.8 V.
- Diagnostics: Diagnostics function, diagnostic alarm, and input-status LED indication are provided.
- Conformal coating: Conformal coating is provided for high-reliability printed circuit board assemblies; Type 1 protection against fouling.
- Installation and protection: The module requires a front connector, has IP20 protection, and measures 45 mm wide, 100 mm high, and 75 mm deep.
Frequently Asked Questions
1. How many digital inputs does 6AG1221-1BF32-4XB0 have?
It has 8 digital inputs, arranged in groups of 2.
2. What input voltage does the 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. Does the module provide diagnostics?
Yes. It has a diagnostics function, diagnostic alarm, and LED indication for input status.
4. What connector is required?
A front connector is required.
