Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | AI 8xU/I HF |
| Analog input channels | 8 |
| Supported voltage ranges | 1 V to 5 V; -10 V to +10 V; -2.5 V to +2.5 V; -5 V to +5 V |
| Supported current ranges | 0 to 20 mA; -20 mA to +20 mA; 4 mA to 20 mA |
| Resolution with overrange | 24 bit |
| Operational error limit | 0.1% for voltage and current, relative to input range |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 19.2 V to 28.8 V DC |
| Maximum current consumption | 55 mA with 19.2 V supply |
| Front connector | Screw terminals or push-in terminals, ordered separately |
| Firmware version | V1.1.0 |
| Power loss | 1.9 W, typ. |
Applications
- Voltage measurement: The module performs voltage measurement through its analog input channels.
- Current measurement: The module performs current measurement with 2-wire transducers using an external transmitter supply and with 4-wire transducers.
- Measured-value processing: The module provides scalable measured values, measuring-range adjustment, calibration in RUN, and parameterizable integration time.
- Input diagnostics: The module monitors supply voltage and provides diagnostic alarms, limit value alarms, wire-break detection, and overflow/underflow detection.
Key Features
- Analog input channels: 8 channels support voltage measurement and current measurement.
- Supported signal ranges: Supported voltage ranges include 1 V to 5 V, -10 V to +10 V, -2.5 V to +2.5 V, and -5 V to +5 V. Supported current ranges include 0 to 20 mA, -20 mA to +20 mA, and 4 mA to 20 mA.
- Resolution and accuracy: Resolution with overrange is up to 24 bit. Operational error limit is 0.1% for voltage and current relative to the input range.
- Diagnostics: The module has diagnostics, diagnostic alarms, limit value alarms, supply voltage monitoring, wire-break detection for 1 … 5 V and 4 … 20 mA, overflow/underflow detection, and RUN, ERROR, PWR, channel-status, channel-diagnostics, and module-diagnostics LEDs.
- Supply and isolation: Rated supply voltage is 24 V DC, with a permissible range of 19.2 V to 28.8 V DC and reverse polarity protection. Channels are electrically separated in groups of 1.
- Delivery and connector: Delivery includes the infeed element, shield bracket, and shield terminal. The front connector with screw terminals or push-in terminals is ordered separately.
Frequently Asked Questions
1. How many analog input channels does Siemens 6ES7531-7NF00-0AB0 have?
It has 8 analog input channels for voltage and current measurement.
2. Which voltage and current ranges does this module support?
Supported voltage ranges are 1 V to 5 V, -10 V to +10 V, -2.5 V to +2.5 V, and -5 V to +5 V. Supported current ranges are 0 to 20 mA, -20 mA to +20 mA, and 4 mA to 20 mA.
3. What resolution and accuracy does the module provide?
Resolution with overrange is up to 24 bit. The operational error limit is 0.1% for voltage and current relative to the input range.
4. What diagnostics are available?
It has diagnostics, diagnostic alarms, limit value alarms, supply voltage monitoring, wire-break detection for 1 … 5 V and 4 … 20 mA, and overflow/underflow detection.
5. Is the front connector included?
It is without the front connector. The front connector with screw terminals or push-in terminals is ordered separately; delivery includes the infeed element, shield bracket, and shield terminal.
