Siemens 6ES7531-7QD00-0AB0 Compact Analog Input

Siemens 6ES7531-7QD00-0AB0 S7-1500 Analog Input Module

The 6ES7531-7QD00-0AB0 is a compact SIMATIC S7-1500 analog input module. This Standard (ST) module measures voltage, current, temperature, and resistance. It includes a push-in front connector for easy installation.

Key Technical Specifications

• Brand & Model: Siemens 6ES7531-7QD00-0AB0 (AI 4xU/I/RTD/TC ST)
• Number of Channels: 4 inputs, in one group
• Signal Types: Voltage, Current, RTD (2 ch), Thermocouple
• Resolution: 16-bit (including sign)
• Accuracy: 0.3% operational error limit
• Supply Voltage: 24V DC (19.2V - 28.8V range)
• Power Loss: Typical 2.3 W

Measurement Ranges & Included Items

• Voltage Ranges: ±10V, ±5V, ±2.5V, ±1V, 1-5V, ±500mV, ±250mV, ±80mV, ±50mV.
• Current Ranges: 0-20mA, 4-20mA, ±20mA.
• RTD Types: Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000, LG-Ni1000.
• Thermocouple Types: B, E, J, K, N, R, S, T.
• Included: Push-in front connector, infeed element, shield bracket, and shield terminal.
• Diagnostics: Wire-break, limit alarms, hardware interrupts.

Physical Data & FAQs

• Dimensions: 25 mm x 147 mm x 129 mm (W x H x D)
• Weight: Approximately 210 grams
• Operating Temperature: -25°C to +60°C (horizontal mount)
• Q: What is the main benefit of this module?
  A: It is a compact, cost-effective solution for 4-channel analog input. It includes a push-in connector, saving you an extra purchase.
• Q: How many channels can measure RTDs?
  A> Two of the four channels are capable of RTD (resistance thermometer) measurement.
• Q: Does it support temperature compensation?
  A: Yes. It supports both internal and external (via RTD) temperature compensation for thermocouples.