Siemens S7-1200 analog input module, 6ES7231-5ND32-0XB0, 4-20 mA / 0-20 mA / ±10V / ±5V / ±2.5V / ±1.25V, 24 V DC, 1.8 W, 45 x 100 x 75 mm.
| Parameter | Value |
|---|---|
| Number of analog inputs | 4; Current or voltage differential inputs |
| Current input range | Yes; 4 to 20 mA, 0 to 20 mA |
| Voltage input range | Yes; ±10V, ±5V, ±2.5V or ±1.25V |
| 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 |
| Input range: -10 to +10 V | Yes |
| Input range: -5 to +5 V | Yes |
| Input resistance (-10 to +10 V) | ≥1 MOhm |
| Permissible input voltage, max. (destruction limit) | ±35 V |
| Permissible input current, max. (destruction limit) | 40 mA |
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 15 bit; + sign |
| Temperature measurement error (±) | 25 °C ±0.1% / ±0.3% total measurement range |
| Voltage measurement error (±) | 0.1 % |
| Current measurement error (±) | 0.1 % |
| Interference voltage suppression (at interference frequency) | 40 dB, DC to 60 V for interference frequency 50 / 60 Hz |
| Common-mode voltage, max. | 12 V |
| Parameter | Value |
|---|---|
| Wire-break detection | Yes |
| Diagnostic alarm | Yes |
| Diagnostics function | Yes |
| Supply voltage monitoring | Yes |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Power loss, typ. | 1.8 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. | 180 g |
The Siemens 6ES7231-5ND32-0XB0 is an analog input module for the S7-1200 PLC family, accepting current signals (4 to 20 mA, 0 to 20 mA) and voltage signals (±10V, ±5V, ±2.5V, ±1.25V) on a single channel. It draws 1.8 W typical from the 24 V DC backplane supply. The module includes parameterizable diagnostics: diagnostic alarm, wire-break detection, and configurable high/low/medium step thresholds for maintenance alerts.
It accepts 4 to 20 mA, 0 to 20 mA current signals, and ±10V, ±5V, ±2.5V, ±1.25V voltage signals. All ranges are parameterizable via the engineering software.
It carries cULus, CE, CSA, FM, UL, KC, and marine approvals — suitable for North American, European, Korean, and marine applications.
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.
No related articles