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6ES7531-7PF00-0AB0 Siemens
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Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 6ES7531-7PF00-0AB0 is a Siemens SIMATIC S7-1500 series analog input module (AI 8xU/R/RTD/TC HF). It provides eight electrically isolated analog input channels capable of measuring voltage, resistance, RTDs, and thermocouples, with an additional ninth channel usable as an RTD reference or temperature compensation. It offers 16-bit resolution (up to 21-bit for RTD/TC), per-channel diagnostics, configurable integration times, and hardware interrupts. The module is suited to industrial process control and data acquisition tasks requiring mixed analog signal processing in harsh environments.
Best Suited For
- Mixed-signal measurements (voltage, resistance, RTD, thermocouple)
- Temperature measurement with internal/external compensation
- High-resolution process control on S7-1500 systems
- Applications requiring per-channel diagnostics and limit interrupts
Analog channels
8 (plus 1 reference/compensation)
Resolution
16-bit (up to 21-bit at RTD/TC)
Measurement types
Voltage, resistance, RTD, thermocouple
Integration time
Fast: 2.5 ms; Standard: 7.5 ms
Power consumption
0.85 W from backplane
Technical Specifications
I/O & Electrical
Number of analog inputs
8 (plus 1 reference channel)
Measurement types
Voltage, resistance, RTD, thermocouple
Common-mode voltage
30 V AC / 60 V DC
Diagnostics
Per-channel diagnostics, hardware interrupts
Integration time (fast)
2.5 ms
Integration time (standard)
7.5 ms
Communication & Power
Supply voltage (rated)
24 V DC
Supply voltage range
19.2 V to 28.8 V DC
Reverse polarity protection
Yes
Current consumption (max)
55 mA at 24 V DC
Power consumption from backplane
0.85 W
Typical power loss
1.9 W
Physical & Environmental
Weight
0.410 kg
Packaging dimensions
16.10 × 19.50 × 5.00 cm
