The SIEMENS SIMATIC S7-200 Analog Input EM 231 module, designated as model 6ES7231-0HC22-0XA0, is a high-performance expansion module engineered for the S7-22X CPU series. This unit provides four analog input channels, each capable of accepting voltage or current signals, making it a versatile choice for integrating sensors, transducers, and transmitters into your control system. With its robust 12-bit resolution and galvanic isolation, the 6ES7231-0HC22-0XA0 ensures reliable data conversion even in electrically noisy environments. Designed for seamless integration, it mounts directly onto the S7-200 backplane, requiring minimal programming effort via STEP 7-Micro/WIN software. Whether you are monitoring temperature, pressure, flow, or level, this module delivers stable and accurate readings, backed by Siemens' decades of industrial automation expertise.
| Parameter |
Specification |
| Product Type |
Analog Input Module (EM 231) |
| Model Number |
6ES7231-0HC22-0XA0 |
| Compatible CPU |
S7-22X (e.g., CPU 222, CPU 224, CPU 226) |
| Number of Inputs |
4 analog inputs (differential) |
| Input Signal Ranges |
0 to 10V, 0 to 20mA, 4 to 20mA (selectable via DIP switches) |
| Resolution |
12 bits (plus sign bit for voltage; 11 bits plus sign for current) |
| Conversion Time |
≤ 250 µs per channel |
| Accuracy |
±0.5% of full scale (typical at 25°C) |
| Galvanic Isolation |
500V AC between inputs and backplane bus |
| Power Consumption |
Typical 1.5W from S7-200 backplane (5V DC) |
| Dimensions (W x H x D) |
71.2 mm x 80 mm x 62 mm (approx.) |
| Weight |
Approximately 120 g |
| Operating Temperature |
0°C to 55°C (storage: -40°C to 70°C) |
| Relative Humidity |
5% to 95% (non-condensing) |
| Connection Type |
Removable terminal block (screw-type) |
| Software Configuration |
STEP 7-Micro/WIN (V4.0 or later) |
| Protection Class |
IP20 |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22