The 6ES7531-7QD00-0AB0 is a SIMATIC S7-1500 analog input module from Siemens, specifically an AI 4xRTD ST module designed for measuring resistance temperature detectors (RTDs) in industrial automation systems.
Key Specifications and Features:
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Channel Configuration: Equipped with 4 analog input channels, grouped into one group of 4, dedicated to connecting RTD sensors for temperature measurement.
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Sensor Compatibility: Supports various RTD types, including Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni500, Ni1000, and Cu10, making it versatile for different temperature sensing applications. It can handle 2-, 3-, or 4-wire RTD connections to ensure accurate measurements by compensating for lead resistance.
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Measurement Range and Accuracy: Offers a wide temperature measurement range depending on the RTD type (typically from -200°C to +850°C for Pt100). It features high accuracy (0.1°C typical under reference conditions) and 16-bit resolution for precise temperature detection.
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Diagnostics and Monitoring: Includes comprehensive diagnostic functions such as sensor breakage, short-circuit detection, and overrange/underrange monitoring. Configurable limit values can trigger interrupts or alerts for abnormal temperature conditions.
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Isolation: Provides electrical isolation between channels and the backplane bus, as well as between channels and the power supply, enhancing noise immunity and system reliability in industrial environments.
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Power Supply: Operates on 24V DC (19.2V DC to 28.8V DC) with reverse polarity protection. The maximum current consumption is 180mA from the external supply, with 0.6W power drawn from the backplane bus.
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Environmental Ratings: Designed to operate in harsh industrial conditions with a temperature range of -30°C to 60°C for horizontal mounting and -30°C to 40°C for vertical mounting. It supports installation at altitudes up to 5000m (with derating for altitudes above 2000m).
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Mechanical Details: Dimensions are 35mm (width) × 129mm (depth) × 147mm (height), with a weight of approximately 280g. Front connectors (screw or push-in type) are sold separately.
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Integration: Seamlessly integrates with the S7-1500 backplane bus and is configured via Siemens TIA Portal software, enabling easy setup and integration into automation systems.
This module is ideal for temperature monitoring in industries such as manufacturing, process control, and energy, where precise and reliable RTD-based temperature measurement is critical.
PLC
S7-200
LED lamps
ABB


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