OVERVIEW

Official designation: Siemens 6ES7 331-7KF02-0AB0 (SIMATIC S7-300, Analog input module)

Role/Application: Isolated 8-channel analog input module for SIMATIC S7-300 systems, supporting high-precision acquisition of voltage, current, thermocouple, and resistance signals.

KEY SPECS SUMMARY

Power: 24 V DC load voltage

Interfaces / Ports: 1x 20-pole front connector

Indicators: Two LEDs: SF (Group Error) and PERR (Parameter Error)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SIMATIC S7-300 active backplane bus

Limit: Selectable 9, 12, or 14-bit resolution

Lifecycle: Spare part status, check manufacturer for details

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What measurement types does the isolated 8-channel SM 331 module support?

A: The module supports voltage, current, thermocouple, and resistance inputs.

Wiring & Installation:

Q: What is the maximum current drawn by the module from the 5V DC backplane bus?

A: The maximum current consumption from the 5V DC backplane bus is 50 mA.

Troubleshooting & Compatibility:

Q: What does the diagnostic SF LED indicate on the analog input module?

A: The SF LED indicates a Group Error, signifying a diagnosed fault on the module.

Replacement & Upgrades:

Q: Is this module still an active Siemens product or has it been discontinued?

A: The 6ES7 331-7KF02-0AB0 module has been designated as a spare part by the manufacturer.