6ES7331-7KF02-0AB0 Siemens S7-300 SM 331 Analog Input Module AI 8x12Bit
6ES7331-7KF02-0AB0 Siemens S7-300 SM 331 Analog Input Module AI 8x12Bit
6ES7331-7KF02-0AB0 — Siemens SIMATIC S7-300 SM 331 Analog Input Module AI 8x12Bit
This model is often searched as:
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331-7KF02-0AB0
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6ES7 331-7KF02-0AB0
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6ES73317KF020AB0
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Siemens 6ES7331-7KF02-0AB0
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6ES7 331 7KF02 0AB0
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Siemens 6ES7331 7KF02 0AB0
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модуль ввода Siemens 6ES7331-7KF02-0AB0
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6ES7331-7KF02-0AB0 price
$75.00
Key Specifications
| Item | Value |
|---|---|
| Manufacturer | Siemens |
| Series | SIMATIC S7-300 |
| Product type | Analog input module |
| Model | SM 331, AI 8x12Bit |
| Order number | 6ES7331-7KF02-0AB0 |
| Number of analog inputs | 8 |
| Resolution | 12-bit |
| Measurement types | Voltage, current, resistance, thermocouple |
| Isolation | Yes |
| Supply voltage | 24V DC |
| Dimensions (WxHxD) | 40 x 125 x 117 mm |
| Weight | Approx. 250 g |
Measurement Ranges
| Type | Range |
|---|---|
| Voltage | ±50 mV, ±500 mV, ±1 V, ±5 V, ±10 V, 1–5 V |
| Current | 0–20 mA, 4–20 mA, ±20 mA, ±3.2 mA, ±10 mA |
| Resistance | 0–150 Ω, 0–300 Ω, 0–600 Ω |
| Thermocouple | Type E, J, K, L, N, R, S, T |
Each channel can be configured independently. The module supports parameterization via STEP 7.
Weight
The 6ES7331-7KF02-0AB0 weighs approximately 250 g (net weight). Gross weight with packaging is around 280–300 g.
Manual and Documentation
The official Siemens manual for this module covers:
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Product overview and properties
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Wiring and block diagram
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Parameters and address space
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Analog value representation
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Diagnostics
The manual is available in multiple languages, including English, German (Handbuch), Russian, and Chinese.
Wiring and Connection
The module uses 20-pin front connector for wiring.
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Voltage measurement: Connect signal to M+ and M- terminals.
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Current measurement: Connect the 2-wire or 4-wire transmitter to I+ and I-.
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Thermocouple: Connect TC to M+ and M-, with compensation box if needed.
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Resistance measurement: Connect the resistor to M+ and M- with constant current supply.
For detailed wiring, refer to the Siemens S7-300 module data manual.
Diagnostic Functions
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Group error display (SF-LED)
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Channel status display
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Wire-break detection
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Overflow/underflow detection
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Parameter assignment error detection
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Reference junction diagnostics (for TC)
Compatible Components
| Component | Order Number |
|---|---|
| Front connector 20-pin | 6ES7392-1AJ00-0AA0 |
| Front connector 20-pin (screw) | 6ES7392-1AJ00-0AA0 |
| S7-300 rail | 6ES7390-1AE80-0AA0 |
| S7-300 CPU | e.g., 6ES7315-2AH14-0AB0 |
Common Applications
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Machine manufacturing
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Process automation
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Packaging lines
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Factory automation
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Temperature and pressure measurement
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Analog signal acquisition
FAQ
Q: What is the difference between 6ES7331-7KF02-0AB0 and 6ES7331-7KF02-0AB0?
A: They are the same model. Different listings use different spacing and capitalization.
Q: Is 6ES7331-7KF02-0AB0 discontinued?
A: No, it is still an active Siemens product, though lead times may vary.
Q: What is the weight of 6ES7331-7KF02-0AB0?
A: Approximately 250 g.
Q: Can I use this module for thermocouple measurement?
A: Yes. It supports thermocouple types E, J, K, L, N, R, S, T.
Q: Where can I find the manual (Handbuch)?
A: The official manual is available from Siemens Industry Online Support. Contact us if you need a copy.
Request a Quote
We supply 6ES7331-7KF02-0AB0, front connectors, and related S7-300 components.
Send us your quantity and destination, and we will quote you our best price.
