Product Overview
Technical Summary
| Product designation | SIMATIC S7-300 analog input SM 331 |
|---|---|
| Input capacity | 8 analog inputs |
| Input ranges | Voltage and current |
| Resolution with overrange | 14 bit; Unipolar: 14 bit; bipolar: 13 bit + sign |
| Basic conversion time | 52 μs per channel |
| Rated load voltage L+ | 24 V DC |
| Required front connector | 20-pin |
| Diagnostics function | Yes |
| Limit value alarm | Yes; Parameterizable, channels 0 and 2 |
| Potential separation | Between the channels and backplane bus; between the channels and the power supply of the electronics |
| Product lifecycle | Product cancellation |
Key Features
- Product designation: SIMATIC S7-300 analog input SM 331; spare part.
- Analog input capacity: 8 analog inputs with voltage and current input ranges.
- Resolution and conversion: Resolution with overrange: 14 bit; basic conversion time: 52 μs per channel.
- Supply and protection: Load voltage L+ rated value: 24 V DC; reverse polarity protection: Yes.
- Diagnostics and alarms: Diagnostics function: Yes. Diagnostic alarm: Yes; parameterizable. Limit value alarm: Yes; parameterizable, channels 0 and 2.
- Connection and dimensions: Required front connector: 20-pin. Dimensions: 40 mm width, 125 mm height, 117 mm depth.
Frequently Asked Questions
What does Siemens order number 6ES7331-7HF01-0AB0 identify?
It identifies a SIMATIC S7-300 analog input SM 331 with isolated 8 AI, 14-bit resolution, diagnostics, and a 20-pin front connector.
Which specifications distinguish this exact module variant?
The supplied variant has voltage and current input ranges, 14-bit resolution with overrange, 52 μs per channel basic conversion time, and limit value alarms on channels 0 and 2.
What connection details should be checked?
Check the required 20-pin front connector, the 24 V DC rated load voltage L+, and the supplied module dimensions of 40 mm x 125 mm x 117 mm.
What information is needed for a quotation?
Provide the complete order number, required quantity, and destination.
