Product Overview
Technical Summary
| Product designation | SIMATIC S7-300 analog input SM 331 |
|---|---|
| Product lifecycle | Product cancellation |
| Analog inputs | 2 |
| Input signal types | Voltage, current, thermocouple, resistance thermometer, resistance |
| Rated supply | 24 V DC |
| Resolution with overrange | 15 bit; unipolar: 9/12/12/14 bit; bipolar: 9 bit + sign/12 bit + sign/12 bit + sign/14 bit + sign |
| Supported voltage ranges | 1 V to 5 V; -1 V to +1 V; -10 V to +10 V; -2.5 V to +2.5 V; -250 mV to +250 mV; -5 V to +5 V; -500 mV to +500 mV; -80 mV to +80 mV |
| Signal connections | Voltage; current as 2-wire or 4-wire transducer; resistance with two-wire, three-wire, or four-wire connection |
| Front connector | 20-pin |
Key Features
- SIMATIC S7-300 SM 331: Analog input module with 2 analog inputs and isolated inputs.
- Supported signal types: Supports voltage, current, thermocouple, resistance thermometer, and resistance measurements.
- Resolution and conversion: Resolution with overrange is 15 bit; parameterizable integration time is 2,5 / 16,67 / 20 / 100 ms.
- Diagnostics and alarms: Has parameterizable diagnostics, diagnostic and limit value alarms, readable diagnostic information, and a red group error SF LED.
- Connections and mounting data: Uses a required 20-pin front connector; dimensions are 40 mm width, 125 mm height, and 120 mm depth.
Applications
- Analog voltage measurement: Supports voltage measurement through signal encoder connections.
- Analog current measurement: Supports current measurement with 2-wire and 4-wire transducers.
- Resistance and temperature measurement: Supports resistance measurement with two-wire, three-wire, and four-wire connections, plus thermocouple and resistance thermometer inputs.
Frequently Asked Questions
What identifies Siemens 6ES7331-7KB02-0AB0?
It is a SIMATIC S7-300 analog input SM 331 module with 2 analog inputs, isolated inputs, and 9/12/14-bit resolution.
Which signal types and ranges should be checked for this code?
Check the supported voltage, current, thermocouple, resistance thermometer, and resistance inputs. Supported voltage ranges include 1 V to 5 V, -1 V to +1 V, -10 V to +10 V, -2.5 V to +2.5 V, -250 mV to +250 mV, -5 V to +5 V, -500 mV to +500 mV, and -80 mV to +80 mV.
What connection details should be verified?
Verify the required 20-pin front connector and whether the installation uses voltage, 2-wire or 4-wire current, or two-wire, three-wire, or four-wire resistance measurement.
What quantity and destination are needed for a quotation?
Provide the required quantity and destination together with the complete 6ES7331-7KB02-0AB0 order number.
