Siemens 6ES7221-1BH32-0XB0

The Siemens 6ES7221-1BH32-0XB0 is an SM 1221 digital input module, an extension module for SIMATIC S7-1200 series PLCs, for digital signal acquisition in industrial automation control systems. Here's a closer look at the product:

1. Product Overview

- Model Number: 6ES7221-1BH32-0XB0
- Abbreviation: SM 1221 DI 16×24 VDC
- Brand: SIEMENS
- Type: Digital input module (16-point input)
- Input type: 24 VDC with Sink/Source input.

2. Main technical parameters

| Parameter | specification
| Enter the number of points | 16 points (divided into 4 groups of 4 points)
| Input voltage | 24 V DC (permissible range 20.4 V ~ 28.8 V)
| Signal "0" level | ≤5 V DC at ≤1 mA
| Signal "1" level | ≥ 15 V DC with ≥ 2.5 mA
| Input Delay | Parameterizable (0.2 ms ~ 12.8 ms)
| Power loss | Typical 2.5 W
| Backplane bus current | 5 V DC, 130 mA max
| Wire length | 500 m for shielded wires and 300 m for unshielded wires
| Ingress Protection | IP20 |
| Operating temperature | -20°C ~ 60°C (Operation), -40°C ~ 70°C (Storage)
| Dimensions (W×H×D) | 45 mm × 100 mm × 75 mm
| Weight | Approx. 210 g.

3. Main Functions
- High-speed input response: Support adjustable input filtering time, suitable for different application scenarios.
- Diagnostics: Provides LED status indicators for easy troubleshooting.
- Potential Isolation: Packet isolation between channels (4 groups) to improve anti-interference ability.
- Compatibility: Compatible with S7-1200 series PLCs with TIA Portal programming environment.

4. Fields of application
This module is widely used in:
- Automated production lines
- Machinery and equipment control
- Logistics conveyor systems
- Industrial robot control
- Other industrial scenarios that require digital signal acquisition.

5. Certifications and Standards
- CE, UL, CSA, FM, RCM (C-TICK), ship certification, etc., in line with international industrial standards.

Details of Siemens 6ES7221-1BH32-0XB0