6ES7431-7QH00-0AB0 SIMATIC S7-400 Analog Input

6ES7431-7QH00-0AB0 – Siemens SIMATIC S7-400 Analog Input Module SM 431

Key Technical Specifications

• Brand: Siemens
• Model: 6ES7431-7QH00-0AB0
• Category: SIMATIC S7-400 Analog Input Module SM 431
• Number of analog inputs: 16 (8 for resistance measurement)
• Resolution: 16-bit including sign
• Basic conversion time: 6 / 20.1 / 23.5 ms (parameterizable)
• Integration time: 2.5 / 16.7 / 20 ms
• Interference voltage suppression: 400 / 60 / 50 Hz
• Load voltage L+: 24 V DC rated, only needed for 2-wire transmitters
• Reverse polarity protection: Yes
• Input current from L+: Max. 400 mA for 16 fully controlled 2-wire transmitters
• Input current from backplane bus: 5 V DC, max. 700 mA
• Power loss: Typ. 4.5 W
• Dimensions (W x H x D): 25 mm x 290 mm x 210 mm
• Weight: Approx. 500 g

Input Ranges and Signal Types

• Voltage ranges: ±25 mV, ±50 mV, ±80 mV, ±250 mV, ±500 mV, ±1 V, ±2.5 V, ±5 V, 1–5 V, ±10 V
• Voltage input resistance: 1 MΩ across all voltage ranges
• Current ranges: 0–20 mA, ±5 mA, ±10 mA, ±20 mA, 4–20 mA
• Current input resistance: 50 Ω across all current ranges
• Thermocouple types: B, E, J, K, L, N, R, S, T, U with 1 MΩ input resistance
• Resistance thermometer: Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000
• Resistance ranges: 0–48 Ω, 0–150 Ω, 0–300 Ω, 0–600 Ω, 0–6000 Ω (usable to 5000 Ω)
• Constant measurement current: 1.67 mA typical for resistance transmitters
• Destruction limit (voltage): 18 V continuous, 75 V for 1 ms (mark to space ratio 1:20)
• Destruction limit (current): 40 mA maximum

Accuracy and Temperature Performance

• Temperature error: ±0.004 %/K relative to input range
• Operational error limit (voltage): ±0.3 % typical, ±0.35 % at ±25 mV
• Operational error limit (current): ±0.3 % across all current ranges
• Operational error limit (resistance, 4-wire): ±0.3 %
• Operational error limit (resistance, 3-wire): ±0.4 %
• Operational error limit (RTD): ±0.4 % relative to input range
• Thermocouple accuracy (Type K): ±6.2 K operational, ±3.4 K at 25 °C
• Basic error limit at 25 °C (voltage): ±0.15 % typical, ±0.23 % at ±25 mV
• Basic error limit at 25 °C (RTD): ±0.3 % relative to input range

FAQ

• Q: What signal types does the 6ES7431-7QH00-0AB0 support?
  A: It supports voltage, current, resistance, thermocouple, and resistance thermometer signals.
• Q: How many analog inputs does this module have?
  A: It offers 16 analog inputs, with 8 channels available for resistance measurement.
• Q: What is the resolution of this module?
  A: The module delivers 16-bit resolution including sign.
• Q: Which thermocouple types can I connect?
  A: You can connect types B, E, J, K, L, N, R, S, T, and U.
• Q: Does this module need external 24 V DC power?
  A: Yes, but only when you supply 2-wire transmitters.
• Q: What is the maximum cable length?
  A: Shielded cables can reach 200 m, but thermocouple cables should stay under 50 m.
• Q: How does the module handle cold junction compensation?
  A: It supports parameterizable compensation with external Pt100 or a compensation socket.
• Q: What is the typical power loss?
  A: The typical power loss is 4.5 W.
• Q: What is the weight of this module?
  A: The module weighs approximately 500 g.
• Q: What is the delivery time?
  A: We ship within 5 days using FedEx, UPS, or DHL.

Contact Information

Inquiries: sales@nex-auto.com
Phone/WhatsApp: +86 153 9242 9628

Partner NexAuto Technology Limited: https://www.nex-auto.com/