Image is for illustrative purposes only. Please refer to product description.
- Manufacturer
- Siemens
- Manufacturer part number
- 6ES7331-7KB02-0AB0
- Product family
- SIMATIC S7-300 PLC Modules
- Category
- PLCs and I/O › Analog I/O modules
- Technical datasheet
- Data sheet
Specifications
| Attribute | Value |
|---|---|
| Type | Analog module |
| Manufacturer lifecycle | Discontinued |
| Product function / Isochronous mode | No |
| Load voltage L+ / Rated value (DC) | 24 V |
| Load voltage L+ / Reverse polarity protection | Yes |
| Input current / from load voltage L+ (without load), max. | 30 mA |
| Input current / from backplane bus 5 V DC, max. | 50 mA |
| Power loss, typ. | 1 W |
| Number of analog inputs | 2 |
| Number of analog inputs / For resistance measurement | 1 |
| Analog inputs / permissible input voltage for voltage input (destruction limit), max. | 20 V; continuous; 75 V for max. 1 s (mark to space ratio 1:20) |
| Analog inputs / permissible input current for current input (destruction limit), max. | 40 mA |
| Analog inputs / Constant measurement current for resistance-type transmitter, typ. | 1.67 mA |
| Input ranges / Voltage | Yes |
| Input ranges / Current | Yes |
Show all 123 specificationsShow fewer specifications
| Input ranges / Thermocouple | Yes |
|---|---|
| Input ranges / Resistance thermometer | Yes |
| Input ranges / Resistance | Yes |
| Input ranges (rated values), voltages / 0 to +10 V | No |
| Input ranges (rated values), voltages / 1 V to 5 V | Yes |
| Input ranges (rated values), voltages / 1 V to 5 V / Input resistance (1 V to 5 V) | 100 kΩ |
| Input ranges (rated values), voltages / 1 V to 10 V | No |
| Input ranges (rated values), voltages / -1 V to +1 V | Yes |
| Input ranges (rated values), voltages / -1 V to +1 V / Input resistance (-1 V to +1 V) | 10 MΩ |
| Input ranges (rated values), voltages / -10 V to +10 V | Yes |
| Input ranges (rated values), voltages / -10 V to +10 V / Input resistance (-10 V to +10 V) | 100 kΩ |
| Input ranges (rated values), voltages / -2.5 V to +2.5 V | Yes |
| Input ranges (rated values), voltages / -2.5 V to +2.5 V / Input resistance (-2.5 V to +2.5 V) | 100 kΩ |
| Input ranges (rated values), voltages / -250 mV to +250 mV | Yes |
| Input ranges (rated values), voltages / -250 mV to +250 mV / Input resistance (-250 mV to +250 mV) | 10 MΩ |
| Input ranges (rated values), voltages / -5 V to +5 V | Yes |
| Input ranges (rated values), voltages / -5 V to +5 V / Input resistance (-5 V to +5 V) | 100 kΩ |
| Input ranges (rated values), voltages / -50 mV to +50 mV | No |
| Input ranges (rated values), voltages / -500 mV to +500 mV | Yes |
| Input ranges (rated values), voltages / -500 mV to +500 mV / Input resistance (-500 mV to +500 mV) | 10 MΩ |
| Input ranges (rated values), voltages / -80 mV to +80 mV | Yes |
| Input ranges (rated values), voltages / -80 mV to +80 mV / Input resistance (-80 mV to +80 mV) | 10 MΩ |
| Input ranges (rated values), currents / 0 to 20 mA | Yes |
| Input ranges (rated values), currents / 0 to 20 mA / Input resistance (0 to 20 mA) | 25 Ω |
| Input ranges (rated values), currents / -10 mA to +10 mA | Yes |
| Input ranges (rated values), currents / -10 mA to +10 mA / Input resistance (-10 mA to +10 mA) | 25 Ω |
| Input ranges (rated values), currents / -20 mA to +20 mA | Yes |
| Input ranges (rated values), currents / -20 mA to +20 mA / Input resistance (-20 mA to +20 mA) | 25 Ω |
| Input ranges (rated values), currents / -3.2 mA to +3.2 mA | Yes |
| Input ranges (rated values), currents / -3.2 mA to +3.2 mA / Input resistance (-3.2 mA to +3.2 mA) | 25 Ω |
| Input ranges (rated values), currents / 4 mA to 20 mA | Yes |
| Input ranges (rated values), currents / 4 mA to 20 mA / Input resistance (4 mA to 20 mA) | 25 Ω |
| Input ranges (rated values), thermocouples / Type B | No |
| Input ranges (rated values), thermocouples / Type E | Yes |
| Input ranges (rated values), thermocouples / Type E / Input resistance (Type E) | 10 MΩ |
| Input ranges (rated values), thermocouples / Type J | Yes |
| Input ranges (rated values), thermocouples / Type J / Input resistance (type J) | 10 MΩ |
| Input ranges (rated values), thermocouples / Type K | Yes |
| Input ranges (rated values), thermocouples / Type K / Input resistance (Type K) | 10 MΩ |
| Input ranges (rated values), thermocouples / Type L | No |
| Input ranges (rated values), thermocouples / Type N | Yes |
| Input ranges (rated values), thermocouples / Type N / Input resistance (Type N) | 10 MΩ |
| Input ranges (rated values), thermocouples / Type R | No |
| Input ranges (rated values), thermocouples / Type S | No |
| Input ranges (rated values), thermocouples / Type T | No |
| Input ranges (rated values), thermocouples / Type U | No |
| Input ranges (rated values), thermocouples / Type TXK/TXK(L) to GOST | No |
| Input ranges (rated values), resistance thermometer / Cu 10 | No |
| Input ranges (rated values), resistance thermometer / Ni 100 | Yes |
| Input ranges (rated values), resistance thermometer / Ni 100 / Input resistance (Ni 100) | 10 MΩ; Standard |
| Input ranges (rated values), resistance thermometer / Ni 1000 | No |
| Input ranges (rated values), resistance thermometer / LG-Ni 1000 | No |
| Input ranges (rated values), resistance thermometer / Ni 120 | No |
| Input ranges (rated values), resistance thermometer / Ni 200 | No |
| Input ranges (rated values), resistance thermometer / Ni 500 | No |
| Input ranges (rated values), resistance thermometer / Pt 100 | Yes |
| Input ranges (rated values), resistance thermometer / Pt 100 / Input resistance (Pt 100) | 10 kΩ; Standard |
| Input ranges (rated values), resistance thermometer / Pt 1000 | No |
| Input ranges (rated values), resistance thermometer / Pt 200 | No |
| Input ranges (rated values), resistance thermometer / Pt 500 | No |
| Input ranges (rated values), resistors / 0 to 150 ohms | Yes |
| Input ranges (rated values), resistors / 0 to 150 ohms / Input resistance (0 to 150 ohms) | 10 MΩ |
| Input ranges (rated values), resistors / 0 to 300 ohms | Yes |
| Input ranges (rated values), resistors / 0 to 300 ohms / Input resistance (0 to 300 ohms) | 10 MΩ |
| Input ranges (rated values), resistors / 0 to 600 ohms | Yes |
| Input ranges (rated values), resistors / 0 to 600 ohms / Input resistance (0 to 600 ohms) | 10 MΩ |
| Input ranges (rated values), resistors / 0 to 6000 ohms | No |
| Thermocouple (TC) / Temperature compensation / Parameterizable | Yes |
| Thermocouple (TC) / Temperature compensation / internal temperature compensation | Yes |
| Thermocouple (TC) / Temperature compensation / external temperature compensation with compensations socket | Yes |
| Thermocouple (TC) / Temperature compensation / for definable comparison point temperature | Yes |
| Thermocouple (TC) / Characteristic linearization / Parameterizable | Yes |
| Thermocouple (TC) / Characteristic linearization / Parameterizable / for thermocouples | Type E, J, K, L, N |
| Thermocouple (TC) / Characteristic linearization / Parameterizable / for resistance thermometer | Pt100 (standard, climatic range), Ni100 (standard, climatic range) |
| Thermocouple (TC) / Cable length / shielded, max. | 200 m; 50 m at 80 mV and thermocouples |
| Integration and conversion time/resolution per channel / Resolution with overrange (bit including sign), max. | 15 bit; Unipolar: 9/12/12/14 bit; bipolar: 9 bit + sign/12 bit + sign/12 bit + sign/14 bit + sign |
| Integration and conversion time/resolution per channel / Integration time, parameterizable | Yes; 2,5 / 16,67 / 20 / 100 ms |
| Integration and conversion time/resolution per channel / Basic conversion time (ms) | 3 / 17 / 22 / 102 ms |
| Integration and conversion time/resolution per channel / Interference voltage suppression for interference frequency f1 in Hz | 400 / 60 / 50 / 10 Hz |
| Connection of signal encoders / for voltage measurement | Yes |
| Connection of signal encoders / for current measurement as 2-wire transducer | Yes |
| Connection of signal encoders / for current measurement as 4-wire transducer | Yes |
| Connection of signal encoders / for resistance measurement with two-wire connection | Yes |
| Connection of signal encoders / for resistance measurement with three-wire connection | Yes |
| Connection of signal encoders / for resistance measurement with four-wire connection | Yes |
| Operational error limit in overall temperature range / Voltage, relative to input range, (+/-) | 1 %; ±1% (80 mV); ±0.6% (250 mV to 1 000 mV); ±0.8% (2.5 V to 10 V) |
| Operational error limit in overall temperature range / Current, relative to input range, (+/-) | 0.7 %; From 3.2 to 20 mA |
| Operational error limit in overall temperature range / Resistance, relative to input range, (+/-) | 0.7 %; 150, 300, 600 Ohm |
| Operational error limit in overall temperature range / Resistance thermometer, relative to input range, (+/-) | 0.7 %; ±0.7 % (Pt100/ Ni100); ±0.8 % (Pt100 climate) |
| Operational error limit in overall temperature range / Thermocouple, relative to input range, (+/-) | 1.1 %; Type E, J, K, L, N |
| Basic error limit (operational limit at 25 °C) / Voltage, relative to input range, (+/-) | 0.6 %; ±0.6% (80 mV, 2.5 V to 10 V); ±0.4% (250 mV to 1 000 mV) |
| Basic error limit (operational limit at 25 °C) / Current, relative to input range, (+/-) | 0.5 %; 3.2 to 20 mA |
| Basic error limit (operational limit at 25 °C) / Resistance, relative to input range, (+/-) | 0.5 %; 150, 300, 600 Ohm |
| Basic error limit (operational limit at 25 °C) / Resistance thermometer, relative to input range, (+/-) | 0.6 %; ±0.5% (Pt100/ Ni100), ±0.6% (Pt100 climate) |
| Basic error limit (operational limit at 25 °C) / Thermocouple, relative to input range, (+/-) | 0.7 %; Type E, N, J, K, L |
| Interrupts/diagnostics/status information / Diagnostics function | Yes; Parameterizable |
| Alarms / Diagnostic alarm | Yes |
| Alarms / Limit value alarm | Yes; Parameterizable, channel 0 |
| Diagnoses / Diagnostic information readable | Yes |
| Diagnostics indication LED / Group error SF (red) | Yes |
| Potential separation analog inputs / between the channels | No |
| Potential separation analog inputs / between the channels and backplane bus | Yes |
| Potential separation analog inputs / between the channels and the power supply of the electronics | Yes; Not for 2-wire transmitters |
| Isolation tested with | 500 V DC |
| required front connector | 20-pin |
| Phase-out announced (PM400) | 1 October 2023 |
| Product cancellation (PM410) | 1 October 2025 |
| Spare part | Yes, supplied by Siemens as a spare part only |
Description
The Siemens 6ES7331-7KB02-0AB0 is the two-channel SM 331 analog input module. Siemens's data sheet lists voltage, current, thermocouple and resistance ranges, a resolution of 9, 12 or 14 bits depending on the integration time, alarms and diagnostics, and a 20-pin front connector. Siemens's data sheet marks it as a spare part. Siemens names no direct successor for the order number; its route forward is migration to the S7-1500 with ET 200MP.
Application: Analog I/O module
Used with: SIMATIC S7-300 rack (S7-300 backplane bus)
What is the 6ES7331-7KB02-0AB0 used for?
It brings a small number of process values into an S7-300, such as a temperature from a thermocouple or a 4-20 mA transmitter signal.
Key features
- 2 analog inputs: voltage, current, thermocouple and resistance
- Resolution 9, 12 or 14 bit (15 bit including sign)
- Alarms and diagnostics
- Isolated; 20-pin front connector
- Discontinued by Siemens on 1 October 2025; spare part only
Documents and Resources
Associated Products
| Image | Product | Description | Stock | View | Add to RFQ |
|---|---|---|---|---|---|
 | 6ES7331-7KF02-0AB0Siemens | SM 331 analog input, 8 AI, U/I/thermocouple/resistance | In stock | View | |
 | 6ES7332-5HF00-0AB0Siemens | SM 332 analog output, 8 AO, voltage/current | In stock | View | |
 | 6ES7331-1KF02-0AB0Siemens | SM 331 analog input, 8 AI, 13 bit, U/I/resistance/Pt100/Ni | In stock | View | |
 | 6ES7331-7NF00-0AB0Siemens | SM 331 analog input, 8 AI, 16 bit, U/I | In stock | View | |
 | 6ES7331-7PF01-0AB0Siemens | SM 331 analog input, 8 AI, RTD, 16 bit | In stock | View | |
 | 6ES7332-5HD01-0AB0Siemens | SM 332 analog output, 4 AO, voltage/current | In stock | View | |
 | 6ES7334-0KE00-0AB0Siemens | SM 334 analog module, 4 AI / 2 AO, 12 bit | In stock | View | |
 | 6ES7331-7NF10-0AB0Siemens | SM 331 analog input, 8 AI, 16 bit, U/I, 4-channel fast mode | In stock | View | |
 | 6ES7331-7HF01-0AB0Siemens | SM 331 analog input, 8 AI, 14 bit, 52 µs per channel | In stock | View | |
 | 6ES7331-7PF11-0AB0Siemens | SM 331 analog input, 8 AI, thermocouples, 16 bit | In stock | View | |
 | 6ES7332-5HB01-0AB0Siemens | SM 332 analog output, 2 AO, voltage/current, 12 bit | In stock | View | |
 | 6ES7332-7ND02-0AB0Siemens | SM 332 analog output, 4 AO, 16 bit, isolated per channel | In stock | View |
Product Questions
Is the 6ES7331-7KB02-0AB0 discontinued?
Yes. Its manufacturer lifecycle status is Discontinued.
Can another Siemens SIMATIC S7-300 part replace it?
Potential replacements must be checked against the required ratings, dimensions and connections. Sharing a family name does not establish interchangeability.
Do you ship worldwide?
Yes. TimControls ships worldwide. Parts usually ship within 3 to 7 working days of order confirmation, and the exact lead time and shipping options are stated on your quote. Include your delivery country and postal code when you ask for a quote.
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