6ES7431-7KF10-0AB0 Siemens S7-400 Analog Input Module | PLC

6ES7431-7KF10-0AB0 – Siemens SIMATIC S7-400 Analog Input Module

Key Technical Specifications

• Brand: Siemens
• Model: 6ES7431-7KF10-0AB0
• Category: SIMATIC S7-400 Analog Input Module SM 431
• Number of analog inputs: 8
• Resolution: 16-bit including sign
• Conversion time: 20 ms at 50 Hz (entire module incl. wire break)
• Basic conversion time: 8 / 23 / 25 ms (parameterizable)
• Input ranges: Resistance thermometer and resistance only
• Supported sensors: Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000
• Input resistance (Pt/Ni): > 10,000 ohms
• Constant measurement current: 1 mA typical for resistance transmitter
• Permissible input voltage (destruction limit): 35 V continuous; 75 V for max. 1 s (mark to space ratio 1:20)
• Interference voltage suppression: none / 60 / 50 Hz
• Isolation: Tested with 500 V DC; potential separation between channels and backplane bus
• Cable length: Shielded, max. 200 m (50 m with thermocouples and ±80 mV ranges)
• Backplane bus current: 5 V DC, max. 650 mA
• Power loss: Typ. 3.3 W
• Dimensions (W x H x D): 25 mm x 290 mm x 210 mm
• Weight: Approx. 650 g
• Diagnostics: Parameterizable diagnostic alarm, limit value alarm, hardware interrupt

Accuracy and Environmental Performance

• Operational error limit (overall temperature range): ±1 °C for resistance thermometer, relative to input range
• Basic error limit at 25 °C: ±0.2 °C for resistance thermometer, relative to input range
• Characteristic linearization: Parameterizable for Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000 with Europe/U.S. characteristics
• Temperature range: Designed for industrial environments with robust isolation
• Interference immunity: Selectable integration time for 50 Hz or 60 Hz noise rejection

Installation Guide

• Mount the module into a compatible SIMATIC S7-400 rack slot.
• Connect resistance thermometers using three-wire or four-wire configuration.
• Use shielded cables to reduce electromagnetic interference in noisy plants.
• Keep cable length under 200 m for resistance measurement and under 50 m for thermocouples.
• Parameterize the module through Siemens engineering software for diagnostics and alarms.
• Verify backplane bus power supply meets the 5 V DC, 650 mA maximum requirement.
• Check potential separation between channels and backplane bus before commissioning.

Package Contents

• 1 x Siemens 6ES7431-7KF10-0AB0 analog input module
• 1 x Protective packaging
• 1 x Installation instructions (basic)

Shipping and Support

• We ship via FedEx, UPS, and DHL worldwide.
• We dispatch all orders within 5 days after payment confirmation.
• We accept returns within 30 days for eligible items.
• We provide new original products with reliable stock availability.

FAQ

• Q: What sensors does the 6ES7431-7KF10-0AB0 support?
  A: It supports Pt100, Pt200, Pt500, Pt1000, Ni100, and Ni1000 resistance thermometers.
• Q: What is the resolution of this analog input module?
  A: The module offers 16-bit resolution including sign for precise measurements.
• Q: Can I use this module for voltage or current inputs?
  A: No, this module only supports resistance and resistance thermometer inputs.
• Q: What is the typical conversion time?
  A: The typical conversion time is 20 ms at 50 Hz for the entire module.
• Q: Does this module provide diagnostics?
  A: Yes, it offers parameterizable diagnostic alarms and limit value alarms.
• Q: What is the maximum cable length for resistance measurement?
  A: Shielded cables can extend up to 200 m for resistance measurement.
• Q: Is the module isolated?
  A: Yes, it provides potential separation between channels and the backplane bus.
• Q: What is the power loss of this module?
  A: The typical power loss is 3.3 W.
• Q: How much does the module weigh?
  A: The module weighs approximately 650 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/