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Siemens 6ES7531-7QF00-0AB0 Programmable Logic Controller
The Siemens 6ES7531-7QF00-0AB0 Programmable Logic Controller offers 8 analog inputs for voltage, current, resistance/RTD with 24V DC operation support.
This Siemens module in the Siemens Programmable Logic Controller family and SIMATIC S7-1500 Series supports 1–5 V, ±1 V, ±5 V, ±10 V, −50 to +50 mV, −500 to +500 mV, and 0–20 mA/4–20 mA; voltage inputs are 10 MΩ, current inputs 25 Ω (+≈42 Ω PTC). Typical 0.9 W power loss, 0.85 W backplane; wire-break for 1–5 V, 4–20 mA, R, RTD; shielded cable to 200 m (50 m at 50 mV).

| Brand | Siemens |
| Product Type | Programmable Logic Controller (PLC) |
| Product | 6ES7531-7QF00-0AB0 |
Siemens 6ES7531-7QF00-0AB0 Programmable Logic Controller – Technical Specifications
| Specification | Value |
|---|---|
| Product Description | SIMATIC S7-1500 Analog input module, AI 8xU/I/R/RTD BA, 16 bit resolution, Accuracy 0.5%, 8 channels in groups of 8; Common mode voltage 4 V DC, Diagnostics; Hardware interrupts; Delivery including infeed element, shield bracket and shield terminal: Front connector (screw terminals or push-in) to be ordered separately |
| Product family | SM 531 analog input modules |
| Product Lifecycle (PLM) | PM300:Active Product |
| Net Weight (kg) | 0,370 Kg |
| Packaging Dimension | 16,10 x 19,30 x 5,00 |
| Package size unit of measure | CM |
| Country of origin | Germany |
The Siemens 6ES7531-7QF00-0AB0 Programmable Logic Controller analog input module provides 8 analog inputs for voltage, current, and resistance/RTD measurement within the SIMATIC S7-1500 Series. Supported ranges include 1–5 V, ±1 V, ±5 V, ±10 V, −50…+50 mV, −500…+500 mV, plus 0–20 mA/4–20 mA with 10 MΩ (voltage) and 25 Ω (+≈42 Ω PTC) input impedances. Operating at 24V DC with a typical 0.9 W power loss and 0.85 W backplane draw, it suits industrial automation measurement tasks.
Across conveyors, packaging machines, automated assembly, and plant monitoring, the Siemens 6ES7531-7QF00-0AB0 enables stable analog acquisition for closed-loop control. Three-wire RTD support (Pt100/Pt1000/Ni100/Ni1000/LG-Ni1000), selectable smoothing, integrating conversion, and diagnostics—including wire-break for 1–5 V, 4–20 mA, R, and RTD—help maintain low-noise, dependable readings even with shielded cabling up to 200 m (50 m at 50 mV ranges).
The Siemens 6ES7531-7QF00-0AB0 Programmable Logic Controller pairs multi-range input capability with consistent operation from −30°C to 60°C and installation altitude to 5,000 m. Within the Siemens ecosystem, it offers predictable accuracy (typical 0.1% limits), clear channel/status LEDs, and balanced energy use, supporting engineers who need reliable analog measurements and straightforward TIA Portal configuration in demanding industrial environments.




