The Siemens 6ES7531-7QF00-0AB0 is an 8-channel analog input module for the S7-1500 system. It handles RTDs (Pt100, Ni100, Pt1000, Ni1000 standard/climate), voltage (1-5 V), and current (0-20 mA). MSI and PTC inputs are built in—MSI powers 2-wire transmitters directly, PTC connects motor thermal protection without external relays. The module fits a standard S7-1500 slot: 35 mm wide, 147 mm tall, 129 mm deep. Status indication via green RUN LED and red ERROR LED.
Siemens 6ES7531-7QF00-0AB0 Analog Input Module MSI PTC
MPN6ES7531-7QF00-0AB0
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Siemens SIMATIC S7-1500 analog input module, 6ES7531-7QF00-0AB0, 8 channels, MSI, PTC, depth 129 mm.
$307.34Ref. 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 |
| 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 range: -80 to +80 mV | No |
| Input range: 0 to 600 Ohm | Yes |
| RTD type: Pt100 | Yes; Standard/climate |
| RTD type: Pt200 | No |
| Current measurement: 2-wire transducer | Yes; with external supply |
| Current measurement: 4-wire transducer | Yes |
| 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) | 10 MΩ |
| Permissible input voltage, max. (destruction limit) | 12 V; 12 V continuous, 30 V for max. 1 s |
| Permissible input current, max. (destruction limit) | 40 mA |
| Max. shielded signal cable length | 200 m; 50 m at 50 mV |
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 16 bit |
| Measurement principle | integrating |
| Temperature measurement error (±) | 0.006 %/K |
| Voltage measurement error (±) | 0.3 % |
| Current measurement error (±) | 0.3 % |
| Interference voltage suppression (at interference frequency) | 400 / 60 / 50 / 10 Hz |
| Common-mode interference suppression, min. | 60 dB |
| Common-mode voltage, max. | 4 V |
| Parameter | Value |
|---|---|
| Wire-break detection | Yes; Only for 1 ... 5 V, 4 ... 20 mA, R, and RTD |
| Diagnostic alarm | Yes |
| Diagnostics function | Yes |
| Limit value alarm | Yes; two upper and two lower limit values in each case |
| Supply voltage monitoring | No |
| Parameter | Value |
|---|---|
| Isolation: channels to backplane bus | Yes |
| Isolation: between channels | No |
| Isolation test voltage | 707 V DC (type test) |
| Parameter | Value |
|---|---|
| Power loss, typ. | 0.9 W |
| Parameter | Value |
|---|---|
| Operating temperature, horizontal mounting, max. | 60 °C |
| Operating temperature, horizontal mounting, min. | 0 °C |
| Operating temperature, vertical mounting, max. | 40 °C |
| Operating temperature, vertical mounting, min. | 0 °C |
| Parameter | Value |
|---|---|
| Width | 35 mm |
| Height | 147 mm |
| Depth | 129 mm |
| Weight, approx. | 250 g |
Product details
Frequently asked questions
What does the PTC (Yes) spec indicate?
PTC (Positive Temperature Coefficient) inputs allow direct connection of motor thermal protection elements (like PTC thermistors) to the module for overtemperature monitoring.
MPN
6ES7531-7QF00-0AB0