Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | AI 8xU/R/RTD/TC HF |
| Input channels | 8; plus one additional RTD reference channel |
| Supported measurements | Voltage, resistance, resistance thermometer, and thermocouple |
| Resolution | 16 bit; up to 21 bit for RTC and TC with scalable temperature measuring range |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 19.2 V to 28.8 V DC |
| Diagnostics | Diagnostics, hardware interrupts, diagnostic alarms, limit value alarms, and wire-break monitoring |
| Common mode voltage | 60 V DC/30 V AC |
| Maximum current consumption | 55 mA; with 19.2 V supply |
| Power consumption from backplane bus | 0.85 W |
| Front connector | Screw terminals or push-in; ordered separately |
Applications
- Analog signal acquisition: Measures voltage, resistance, resistance thermometer, and thermocouple signals through its analog input channels.
Key Features
- Analog input channels: 8 channels for voltage, resistance, resistance thermometer, and thermocouple measurement, plus one additional RTD reference channel.
- Supported signal ranges: Supported voltage ranges include -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.
- Resolution and accuracy: 16 bit resolution for R and U measuring modes; up to 21 bit resolution for RTC and TC with scalable temperature measuring range. Accuracy: 0.1%.
- 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 protection: Rated supply voltage: 24 V DC, permissible range 19.2 V to 28.8 V DC. Reverse polarity protection is provided; maximum current consumption is 55 mA with 19.2 V supply.
- Delivery and connector: Delivery includes an infeed element, shield bracket, and shield terminal. The front connector with screw terminals or push-in must be ordered separately.
Frequently Asked Questions
1. How many analog inputs does 6ES7531-7PF00-0AB0 provide?
It provides 8 analog input channels in groups of 1, plus one additional RTD reference channel.
2. Which signal types does this module measure?
It measures voltage, resistance, resistance thermometer, and thermocouple signals.
3. What resolution does the module provide?
It provides 16 bit resolution for R and U measuring modes and up to 21 bit resolution for RTC and TC when using the scalable temperature measuring range.
4. What supply voltage does it require?
The rated supply voltage is 24 V DC, with a permissible range of 19.2 V to 28.8 V DC.
5. Is the front connector included?
No. The front connector with screw terminals or push-in must be ordered separately; the delivery includes an infeed element, shield bracket, and shield terminal.
