Siemens S7-300 4AI Ex i analog input module, 6AG1331-7RD00-2AB0, -40..70°C, ATEX II 3 G Ex nA, FM Class I Div2, 24V DC.
| Parameter | Value |
|---|---|
| Number of analog inputs | 4 |
| Current input range | Yes |
| Voltage input range | No |
| Resistance measuring ranges | No |
| RTD support (resistance thermometer) | No |
| Thermocouple support (types) | No |
| Input range: 0 to 20 mA | Yes |
| Input range: 4 to 20 mA | Yes |
| Current measurement: 2-wire transducer | Yes |
| Current measurement: 4-wire transducer | Yes |
| Input resistance (0 to 20 mA) | 50 Ω |
| Input resistance (4 to 20 mA) | 50 Ω |
| Permissible input current, max. (destruction limit) | 40 mA |
| Max. shielded signal cable length | 200 m |
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 16 bit; 10 bit to 15 bit + sign |
| Current measurement error (±) | 0.1 % |
| Interference voltage suppression (at interference frequency) | 10 to 400 Hz |
| Parameter | Value |
|---|---|
| Diagnostics function | Yes |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Power loss, typ. | 3 W |
| Reverse polarity protection | Yes |
| Parameter | Value |
|---|---|
| Required front connector | 20-pin |
| Width | 40 mm |
| Height | 125 mm |
| Depth | 120 mm |
| Weight, approx. | 290 g |
The 6AG1331-7RD00-2AB0: Four analog inputs accepting 0 to 20 mA or 4 to 20 mA, terminated on a 20-pin front connector. Input resistance sits at 50 Ω per channel, so the loop sees a standard burden. Module carries Ex i intrinsic safety protection—zone-mount with confidence. Reverse polarity protection on the 24 V DC supply. Diagnostics via red SF and per-channel F indicators; group error signal reports on the backplane.
Rated -40 °C minimum to 70 °C maximum operating.
ATEX II 3 G Ex nA [ib Gb] IIC T4 Gc, FM Class I Division 2 Groups A B C D T4, and UL File E239877.
Uo 25.2 V max, Po 431 mW max. PTB test number Ex-96.D.2092X.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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