Product information
Overview
Applications
- Voltage measurement: Measures voltage signals using the supported voltage input ranges.
- Resistance and resistance thermometer measurement: Measures resistance and resistance thermometer signals using two-wire, three-wire or four-wire connections as supported.
- Thermocouple measurement: Measures thermocouple signals with supported thermocouple types, including type C.
Key Features
- Analog input capacity: 8 analog inputs for voltage, resistance, resistance thermometer and thermocouple measurement, plus one additional RTD reference channel.
- Resolution and accuracy: 16 bit resolution, up to 21 bit resolution for RT and TC when using the scalable temperature measuring range, and 0.1% accuracy.
- Supported signals: Supports voltage ranges including -1 V to +1 V, -25 mV to +25 mV, -250 mV to +250 mV, -50 mV to +50 mV, -500 mV to +500 mV and -80 mV to +80 mV, plus thermocouple types B, C, E, J, K, N, R, S, T and TXK/TXK(L) to GOST.
- Temperature measurement: Scalable temperature measuring range, parameterizable and internal or external temperature compensation via RTD; thermocouple type C is supported.
- Diagnostics and interrupts: Diagnostics, hardware interrupts, diagnostic alarms, limit value alarms, wire-break monitoring for TC, R and RTD, and overflow/underflow detection.
- Supply and connection: Rated supply voltage: 24 V DC; permissible range: 19.2 V to 28.8 V DC. Delivery includes the infeed element, shield bracket and shield terminal; the front connector with screw terminals or push-in is ordered separately.
Technical Summary
| Product type | AI 8xU/R/RTD/TC HF |
|---|---|
| Channels | 8 analog inputs in groups of 1; plus one additional RTD reference channel |
| Resolution | 16 bit; up to 21 bit for RT and TC with the scalable temperature measuring range |
| Accuracy | 0.1% |
| Supply voltage | 24 V DC; permissible range 19.2 V to 28.8 V DC |
| Input measurements | Voltage, resistance, resistance thermometer and thermocouple |
| Supported thermocouples | Types B, C, E, J, K, N, R, S, T and TXK/TXK(L) to GOST |
| Input resistance | 10 MΩ for the stated voltage, thermocouple, resistance and resistance thermometer ranges |
| Diagnostics | Diagnostics, hardware interrupts, diagnostic alarms, limit value alarms and wire-break monitoring for TC, R and RTD |
| Firmware | V1.1.0; FW update possible: Yes |
| Front connector | Screw terminals or push-in, ordered separately |
Frequently Asked Questions
What is the exact product type of Siemens 6ES7531-7PF00-0AB0?
It is a SIMATIC S7-1500 analog input module AI 8xU/R/RTD/TC HF.
How many analog inputs does the module have?
It has 8 analog inputs in groups of 1, plus one additional RTD reference channel.
Which signals can this module measure?
It supports voltage, resistance, resistance thermometer and thermocouple measurement, including thermocouple type C.
Is the front connector included?
The front connector with screw terminals or push-in is ordered separately. Delivery includes the infeed element, shield bracket and shield terminal.
What information should I provide for a quotation?
Provide the required quantity, destination, requested date and project or parts-list context for verification.
