Product Overview
Applications
Measures voltage, current, thermocouple, resistance thermometer, and resistance signals through the supported analog input ranges.
Provides parameterizable diagnostics, diagnostic alarms, limit value alarms, and readable diagnostic information.
Technical Summary
| Product function | SIMATIC S7-300 analog input module with 2 AI |
|---|---|
| Input signal types | Voltage, current, thermocouple, resistance thermometer, and resistance |
| Resolution | 15 bit with overrange; unipolar 9/12/12/14 bit; bipolar 9 bit + sign/12 bit + sign/12 bit + sign/14 bit + sign |
| Rated load voltage L+ | 24 V DC |
| Input connection | 20-pin front connector |
| Isolation | Between analog inputs and backplane bus; between analog inputs and electronics power supply; not between channels |
| Diagnostics | Parameterizable diagnostics, diagnostic alarm, limit value alarm, and readable diagnostic information |
| Product lifecycle | Product cancellation |
Key Features
2 analog inputs; 1 input is available for resistance measurement.
Voltage, current, thermocouple, resistance thermometer, and resistance input ranges, including 1 V to 5 V, 0 to 20 mA, Type E/J/K/N thermocouples, Ni 100, Pt 100, and 0 to 150/300/600 ohms.
Resolution with overrange: 15 bit; unipolar resolution: 9/12/12/14 bit; bipolar resolution: 9 bit + sign/12 bit + sign/12 bit + sign/14 bit + sign. Integration time is parameterizable at 2,5 / 16,67 / 20 / 100 ms.
Parameterizable diagnostics, diagnostic and limit value alarms, and diagnostic information readable. Connection requires a 20-pin front connector; removal and insertion are possible with an active backplane bus.
Rated load voltage L+: 24 V DC with reverse polarity protection. Analog inputs are isolated from the backplane bus and electronics power supply, but not between channels.
Product cancellation. Dimensions: 40 mm width, 125 mm height, and 120 mm depth; weight: approximately 250 g.
Frequently Asked Questions
What is Siemens 6ES7331-7KB02-0AB0?
It is a SIMATIC S7-300 analog input module with 2 AI for voltage, current, thermocouple, resistance thermometer, and resistance signals.
Which resolution does the 6ES7331-7KB02-0AB0 provide?
Resolution with overrange is 15 bit. Unipolar resolution is 9/12/12/14 bit, and bipolar resolution is 9 bit + sign/12 bit + sign/12 bit + sign/14 bit + sign.
What connection does this module require?
It requires a 20-pin front connector. Removal and insertion are possible with an active backplane bus.
Is channel-to-channel isolation provided?
No. The analog inputs are not isolated between channels, but they are isolated from the backplane bus and electronics power supply.
How can I request this line item for a project?
Submit the exact order number, requested quantity, destination, schedule context, and any additional BOM lines for quotation review.
