Product Description
Key Features
- Exact hardware identity: Siemens SIPLUS S7-300 SM 331, based on 6ES7331-7KF02-0AB0; product lifecycle: Product cancellation.
- Analog input capacity: 8 analog inputs; 4 inputs support resistance measurement, with voltage, current, thermocouple, resistance thermometer and resistance input ranges.
- Resolution and conversion: Resolution with overrange: max. 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.
- Supply and protection: Load voltage L+: rated value (DC) 24 V; reverse polarity protection: Yes. Input current from load voltage L+ (without load), max.: 200 mA; power loss, typ.: 1 W.
- Connections and isolation: 1x 20-pole removing/inserting connection with active backplane bus. Analog inputs are isolated from the backplane bus and electronics power supply, but not between channels.
- Environmental design: Conformal coating with a -25…+70 °C range; shielded cable length, max.: 200 m, or 50 m at 80 mV and thermocouples.
Applications
- Analog voltage and current measurement: Supports voltage measurement and current measurement with 2-wire or 4-wire transducers.
- Temperature measurement: Supports thermocouple and resistance thermometer measurement, including Type E, J, K, L, N, Ni 100 and Pt 100 ranges.
- Resistance measurement: Supports resistance measurement with two-wire, three-wire or four-wire connections, and resistance ranges of 0 to 150 ohms, 0 to 300 ohms and 0 to 600 ohms.
Technical Summary
| Product type | SIPLUS S7-300 SM 331 analog input module |
|---|---|
| Order number | 6AG1331-7KF02-2AB0 |
| Based on | 6ES7331-7KF02-0AB0 |
| Analog inputs | 8; 4 for resistance measurement |
| Resolution with overrange, max. | 15 bit |
| Rated load voltage L+ (DC) | 24 V; an EN 50155 power supply shall be used for railway applications |
| Input ranges | Voltage, current, thermocouple, resistance thermometer and resistance |
| Integration time | Parameterizable: 2,5 / 16,67 / 20 / 100 ms |
| Connection | 1x 20-pole removing/inserting with active backplane bus |
| Protection | Reverse polarity protection; conformal coating |
| Product lifecycle | Product cancellation |
Frequently Asked Questions
What exact Siemens code should be checked for this analog input module?
Check order number 6AG1331-7KF02-2AB0 and the base designation 6ES7331-7KF02-0AB0.
How many analog inputs does 6AG1331-7KF02-2AB0 have?
It has 8 analog inputs, including 4 inputs for resistance measurement.
What connection does the module use?
It has 1x 20-pole removing/inserting connection 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 the electronics power supply.
