Siemens SIMATIC S7-300, AI 8xRTD/TC, 8-channel analog input module, thermocouple types B/C/E/J/K/L/N/R/S/T/U, -1 to +1 V, 125 x 40 x 120 mm.
| Parameter | Value |
|---|---|
| Number of analog inputs | 6 |
| Current input range | No |
| Voltage input range | Yes |
| Resistance measuring ranges | No |
| RTD support (resistance thermometer) | No |
| Thermocouple support (types) | Yes |
| Input range: 0 to 20 mA | No |
| Input range: 4 to 20 mA | No |
| Input range: -10 to +10 V | No |
| Input range: -5 to +5 V | No |
| Input range: -80 to +80 mV | Yes |
| Input range: 0 to 600 Ohm | No |
| RTD type: Pt100 | No |
| RTD type: Pt200 | No |
| Permissible input voltage, max. (destruction limit) | 35 V; 35 V continuous, 75 V for max. 1 s (mark to space ratio 1:20) |
| Max. shielded signal cable length | 200 m |
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 16 bit; Two's complement |
| Voltage measurement error (±) | See manual for details |
| Interference voltage suppression (at interference frequency) | 10 / 50 / 60 / 400 Hz |
| Parameter | Value |
|---|---|
| Diagnostic alarm | Yes; channel by channel |
| Diagnostics function | Yes; Parameterizable |
| Limit value alarm | Yes; Parameterizable |
| Parameter | Value |
|---|---|
| Isolation: channels to backplane bus | Yes |
| Isolation: between channels | Yes |
| Isolation test voltage | 2 500 V DC |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Power loss, typ. | 2.2 W |
| Reverse polarity protection | Yes |
| Parameter | Value |
|---|---|
| Required front connector | 40-pin |
| Width | 40 mm |
| Height | 125 mm |
| Depth | 120 mm |
| Weight, approx. | 272 g |
The 6ES7331-7PE10-0AB0: The thermocouple list covers most common industrial temperature probes — you don't need a separate TC-to-analog converter for each type. The -1 V to +1 V range matches the millivolt signal from a thermocouple; no gain setting needed. Physical fit: 125 mm high, 40 mm wide, 120 mm deep. Standard S7-300 module width, fits any active or expansion rack without issue.
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