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Siemens 6ES7231-5ND30-0XB0 — Analog Input Modules

Siemens 6ES7231-5ND30-0XB0 SM 1231 AI 8x13 bit, 70°C

MPN6ES7231-5ND30-0XB0

Siemens S7-1200 SM 1231 analog input module, order code 6ES7231-5ND30-0XB0, 8 AI, 13-bit resolution, current/voltage/resistance, -40 to 70°C, IP20.

$560.84Ref. price · indicative, final on quote
Siemens 6ES7231-5ND30-0XB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6ES7231-5ND30-0XB0 — Inputs & Signal Ranges
ParameterValue
Number of analog inputs4; Current or voltage differential inputs
Current input rangeYes; 4 to 20 mA, 0 to 20 mA
Voltage input rangeYes; ±10V, ±5V, ±2.5V or ±1.25V
Resistance measuring rangesYes
RTD support (resistance thermometer)No
Thermocouple support (types)No
Input range: 0 to 20 mAYes
Input range: 4 to 20 mAYes
Input range: -10 to +10 VYes
Input range: -5 to +5 VYes
Permissible input voltage, max. (destruction limit)35 V
Permissible input current, max. (destruction limit)40 mA
6ES7231-5ND30-0XB0 — Measurement Performance
ParameterValue
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
6ES7231-5ND30-0XB0 — Diagnostics & Monitoring
ParameterValue
Wire-break detectionYes
Diagnostic alarmYes
Diagnostics functionYes
Supply voltage monitoringYes
6ES7231-5ND30-0XB0 — Power
ParameterValue
Rated value (DC)24 V
Power loss, typ.1.8 W
6ES7231-5ND30-0XB0 — Mechanical
ParameterValue
Required front connectorYes
Width45 mm
Height100 mm
Depth75 mm
Weight, approx.180 g

Product details

Integration notes

The 6ES7231-5ND30-0XB0: Operates from the backplane at 24 V DC, drawing a typical 1.8 W. Diagnostics include wire-break detection and a parameterizable diagnostic alarm — useful for field wiring fault isolation without opening the cabinet.

The 70 °C maximum ambient is a practical ceiling for panel placement: if the cabinet interior (after solar load or adjacent drives) pushes near that, the module keeps its accuracy. The -40 °C low end is common for outdoor or unheated equipment. Resistance inputs support potentiometric or resistive sensors; resistance thermometer (RTD) is not supported. Approvals: CE, FM, CSA, Marine, and RCM — covers North American, European, and Australian marine environments without extra component-level certification.

Field installation

Width 45 mm, depth 75 mm, height 100 mm; mounts on the S7-1200 DIN-rail assembly. IP20 means suitable for a clean, dry enclosure — no washdown areas.

Frequently asked questions

What is the maximum ambient temperature rating?

70 °C, which is the upper limit for proper operation.

What is the minimum ambient temperature rating?

-40 °C, allowing use in cold environments.

What compliance documentation is available?

The module carries CE, FM, CSA, Marine, and RCM approvals.

MPN
6ES7231-5ND30-0XB0