Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SM 1221, DI 16×24 V DC |
| Number of digital inputs | 16 |
| Input grouping | In groups of 4 |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V |
| Signal 0 input voltage | 5 V DC at 1 mA |
| Signal 1 input voltage | 15 V DC at 2.5 mA |
| Diagnostic alarm | Yes |
| Input-status LED indication | Yes |
| Protection | IP20 |
| Required connection | Front connector |
Applications
- Digital signal acquisition: Acquires digital 24 V DC signals through 16 digital inputs.
Key Features
- Digital inputs: 16 digital inputs, in groups of 4, with an input characteristic curve according to IEC 61131, type 1.
- 24 V DC signal input: Input voltage is 24 V DC nominal; signal 0 is 5 V DC at 1 mA and signal 1 is 15 V DC at 2.5 mA.
- Supply voltage: Rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
- Diagnostics and protection: The module has diagnostic alarms, input-status LED indication, IP20 protection, and conformal coating.
- Connection and dimensions: A front connector is required. Dimensions are 45 mm wide, 100 mm high, and 75 mm deep; approximate weight is 210 g.
Frequently Asked Questions
1. What is the function of the Siemens 6AG1221-1BH32-2XB0?
It is a SIPLUS S7-1200 SM 1221 digital input module with 16 DI for 24 V DC signals.
2. How many digital inputs does the module have?
It has 16 digital inputs, arranged in groups of 4.
3. What supply voltage does the 6AG1221-1BH32-2XB0 use?
Its rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
4. What diagnostic features are provided?
The module has diagnostic alarms and LED indication for input status.
5. What connection and mounting details should be verified before inquiry?
A front connector is required; dimensions are 45 mm x 100 mm x 75 mm.
