Product Overview
Technical Summary
| Product designation | SIMATIC S7-300, analog input SM 331 |
|---|---|
| Analog inputs | 8 |
| Input types | Voltage and current |
| Selected voltage ranges | 1 V to 5 V; -10 V to +10 V; -5 V to +5 V |
| Selected current ranges | 0 to 20 mA; -20 mA to +20 mA; 4 mA to 20 mA |
| Resolution with overrange, max. | 16 bit |
| Integration time, parameterizable | 10/ 16.67/ 20/ 100 ms |
| Required front connector | 40-pin |
| Isolation | Between analog inputs and backplane bus: Yes; between channels: No |
| Product lifecycle | Product cancellation |
Key Features
- Product designation: SIMATIC S7-300, analog input SM 331; isolated, 8 AI.
- Supported input ranges: Rated ranges include 1 V to 5 V, -10 V to +10 V, -5 V to +5 V, 0 to 20 mA, -20 mA to +20 mA, and 4 mA to 20 mA.
- Resolution and conversion: Resolution with overrange is max. 16 bit; parameterizable integration time is 10/ 16.67/ 20/ 100 ms.
- Diagnostics: Parameterizable diagnostics function, diagnostic alarm, and limit value alarm are supplied; the limit value alarm applies to channels 0 and 2.
- Connections and isolation: The module has a required 40-pin front connector and isolation between the analog inputs and backplane bus; channel-to-channel potential separation is not provided.
- Mechanical data: Dimensions are 40 mm width, 125 mm height, and 117 mm depth; weight is approx. 272 g.
Frequently Asked Questions
Which specifications distinguish Siemens 6ES7331-7NF00-0AB0?
This code identifies a SIMATIC S7-300 SM 331 isolated analog input module with 8 AI, selected voltage and current ranges, max. 16-bit resolution, and a 40-pin front connector.
What input ranges should be checked for this module?
Check the listed rated ranges: 1 V to 5 V, -10 V to +10 V, -5 V to +5 V, 0 to 20 mA, -20 mA to +20 mA, and 4 mA to 20 mA.
What connector and isolation details should be verified?
Verify the required 40-pin front connector, isolation between the analog inputs and backplane bus, and the absence of potential separation between channels.
Is the 6ES7331-7NF00-0AB0 supplied with thermocouple input?
It is without thermocouple input; the supplied input-range data marks thermocouple as No.
What information is needed for a quotation?
Provide the complete order number, requested quantity, and destination for quotation review.
