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Siemens 6ES7531-7NF00-0AB0 — Analog Input Modules

Siemens 6ES7531-7NF00-0AB0 SIMATIC ET 200SP AI module, 4xU/I

MPN6ES7531-7NF00-0AB0
Active

Siemens SIMATIC ET 200SP analog input module, AI 4xU/I 2-wire ST, 6ES7531-7NF00-0AB0, voltage/current 0-20mA and 1-5V, no thermocouple support, MSI Yes, 35x147x129mm.

$584.20Ref. price · indicative, final on quote
Siemens 6ES7531-7NF00-0AB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6ES7531-7NF00-0AB0 — Inputs & Signal Ranges
ParameterValue
Number of analog inputs8
Input range: 0 to 20 mAYes
Input range: 4 to 20 mAYes
Input range: -10 to +10 VYes
Input range: -5 to +5 VYes
Input range: -80 to +80 mVNo
Input range: 0 to 600 OhmNo
RTD type: Pt100No
RTD type: Pt200No
Current measurement: 2-wire transducerYes; with external transmitter supply
Current measurement: 4-wire transducerYes
Input resistance (0 to 20 mA)25 Ω; Plus approx. 42 ohms for overvoltage protection by PTC
Input resistance (4 to 20 mA)25 Ω; Plus approx. 42 ohms for overvoltage protection by PTC
Input resistance (-10 to +10 V)100 kΩ
Permissible input voltage, max. (destruction limit)28.8 V
Permissible input current, max. (destruction limit)40 mA
Max. shielded signal cable length800 m
6ES7531-7NF00-0AB0 — Measurement Performance
ParameterValue
Resolution (bit incl. sign), max.24 bit; When using the function "Scaling of the measured values" or "Measuring range adaptation" (32 bit REAL format); 16 bit when using the S7 format (16 bit INTEGER)
Temperature measurement error (±)0.005 %/K
Voltage measurement error (±)0.05 %
Current measurement error (±)0.05 %
Interference voltage suppression (at interference frequency)400 / 60 / 50 / 10 Hz
Common-mode interference suppression, min.80 dB
Common-mode voltage, max.60 V DC/30 V AC
6ES7531-7NF00-0AB0 — Diagnostics & Monitoring
ParameterValue
Wire-break detectionYes; only for 1 ... 5 V and 4 ... 20 mA
Diagnostic alarmYes
Diagnostics functionYes
Limit value alarmYes; two upper and two lower limit values in each case
Supply voltage monitoringYes
6ES7531-7NF00-0AB0 — Isolation
ParameterValue
Isolation: channels to backplane busYes
Isolation: between channelsYes
Isolation test voltage2 000 V DC between the channels and the supply voltage L+; 2 000 V DC between the channels and the backplane bus; 2 000 V DC between the channels; 707 V DC (type test) between the supply voltage L+ and the backplane bus
6ES7531-7NF00-0AB0 — Power
ParameterValue
Rated value (DC)24 V
Power loss, typ.1.9 W
Reverse polarity protectionYes
6ES7531-7NF00-0AB0 — Environmental
ParameterValue
Operating temperature, horizontal mounting, max.60 °C
Operating temperature, horizontal mounting, min.-30 °C; From FS02
Operating temperature, vertical mounting, max.40 °C
Operating temperature, vertical mounting, min.-30 °C; From FS02
6ES7531-7NF00-0AB0 — Mechanical
ParameterValue
Width35 mm
Height147 mm
Depth129 mm
Weight, approx.280 g

Product details

The Siemens 6ES7531-7NF00-0AB0 is a 4-channel analog input module for the ET 200SP distributed I/O system, accepting 0 to 20 mA and 1 V to 5 V signals on a 2-wire interface. It does not support thermocouples or RTDs — every TC/RTD type in the spec table is flagged No (Pt100, Pt1000, type K, type J, type B, etc.). If your line-down spare was reading a temperature probe, this module won’t do the job. The module fits the standard ET 200SP form factor: 35 mm wide, 147 mm tall, 129 mm deep.

This module carries I&M data (I&M0 to I&M3) for asset tracking — a small but useful detail for panels that log module IDs against the PLC hardware catalog.

Mounts directly into an ET 200SP baseUnit (not included). The terminal assignments follow the standard 2-wire AI pinout — no special wiring beyond the 0-20 mA or 1-5 V signal loop. Step resolutions are Low and High (selectable per channel). If you're swapping a failed module on site, power down the rack, pull the old card, clip in this one — the baseUnit stays. The 35 mm width leaves no gap in the rail; verify the baseUnit color (light) matches the module type if your panel uses the keying system.

Frequently asked questions

What are the physical dimensions of the 6ES7531-7NF00-0AB0?

The module is 35 mm wide, 147 mm high, and 129 mm deep — standard ET 200SP single-wide form factor. It fits any baseUnit without overhang.

Does this module have diagnostic LEDs?

Yes. It has a green RUN LED and a red ERROR LED for quick visual status at the cabinet.

MPN
6ES7531-7NF00-0AB0