The Siemens 6ES7231-5QF32-0XB0 is a current-production analog input module for the S7-1200 system, accepting thermocouple types J, K, T, E, R, S, B, N, and C with a typical power draw of 1.5 W from the 24 V DC backplane. Its diagnostic alarm and wire-break detection report faults directly to the PLC, saving a separate signal conditioner on each channel. Rated for -40 to 70 °C ambient and carrying cULus, CE, FM, KC, UL, CSA, and Marine approvals, this module fits into panels destined for global or harsh environments.
Siemens 6ES7231-5QF32-0XB0 Analog Input, 70°C
MPN6ES7231-5QF32-0XB0
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Siemens SIMATIC S7-1200, 8-channel analog input module for thermocouples, 24 V DC, 1.5 W, -40 to 70 °C.
$346.67 – $902.46Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Number of analog inputs | 8; Thermocouples |
| Current input range | No |
| Voltage input range | Yes |
| Resistance measuring ranges | No |
| RTD support (resistance thermometer) | No |
| Thermocouple support (types) | Yes; J, K, T, E, R & S, B, N, C, TXK/XK(L); voltage range: ±80 mV |
| Input range: -80 to +80 mV | Yes |
| Permissible input voltage, max. (destruction limit) | ±35 V |
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 15 bit; + sign |
| Measurement principle | integrating |
| Temperature measurement error (±) | 25 °C ±0.1%, to 55 °C ±0.2% total measurement range |
| Interference voltage suppression (at interference frequency) | 85 dB at 50 / 60 / 400 Hz |
| Common-mode interference suppression, min. | 120 dB |
| Parameter | Value |
|---|---|
| Wire-break detection | Yes |
| Diagnostic alarm | Yes |
| Diagnostics function | Yes; Can be read out |
| Supply voltage monitoring | Yes |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Power loss, typ. | 1.5 W |
| Parameter | Value |
|---|---|
| Operating temperature, horizontal mounting, max. | 60 °C |
| Operating temperature, horizontal mounting, min. | -20 °C |
| Operating temperature, vertical mounting, max. | 50 °C |
| Operating temperature, vertical mounting, min. | -20 °C |
| Parameter | Value |
|---|---|
| Required front connector | Yes |
| Width | 45 mm |
| Height | 100 mm |
| Depth | 75 mm |
| Weight, approx. | 220 g |
Product details
Frequently asked questions
What compliance approvals does this module carry?
It holds cULus, CE, FM, KC, UL, CSA, and Marine approvals. This covers most industrial and maritime certification requirements.
MPN
6ES7231-5QF32-0XB0