6ES7431-1KF00-0AB0 SIMATIC S7-400 Isolated Analog Input

SIMATIC S7-400 6ES7431-1KF00-0AB0 Isolated Analog Input Module SM 431

Key Technical Specifications

• Supply voltage: No external load voltage L+ required; draws max. 350 mA from the 5 V DC backplane bus.
• Power loss: Typical 1.8 W, ensuring efficient operation.
• Analog inputs: 8 channels for voltage/current, plus 4 channels for resistance measurement (0–600 Ω, usable up to 500 Ω).
• Destruction limits: Max. 50 V for voltage input; max. 50 mA (40 mA continuous) for current input.
• Constant measurement current: 1.67 mA for resistance-type transmitters.
• Input ranges (voltage): 1–5 V (200 kΩ), ±1 V (200 kΩ), ±10 V (200 kΩ) – all supported.
• Input ranges (current): ±20 mA and 4–20 mA with 80 Ω input resistance.
• Resistance ranges: 0–600 Ω (usable up to 500 Ω) with 2-, 3-, or 4-wire connection.
• Cable length: Shielded cables up to 200 m max.
• Resolution: 13-bit with overrange, including sign.
• Integration time: Parameterizable; basic conversion time 23/25 ms; integration time 16.7/20 ms.
• Interference suppression: For 50/60 Hz, ensuring stable readings in industrial environments.
• Module execution time: 184/200 ms (all channels released).
• Temperature error: ±0.02 %/K for resistance; ±0.007 %/K for other ranges.
• Operational error limits: Voltage ±1.0 % (±1 V), ±0.6 % (±10 V), ±0.7 % (1–5 V); Current ±1.0 %; Resistance ±1.25 % (0–500 Ω).
• Basic error limits (at 25 °C): Voltage ±0.7 % (±1 V), ±0.4 % (±10 V), ±0.5 % (1–5 V); Current ±0.7 %; Resistance ±0.8 %.
• Diagnostics: No diagnostics function.
• Potential separation: Isolated between channels and backplane bus (tested at 2120 V DC bus-to-analog, 500 V DC bus-to-ground, 2120 V DC analog-to-ground).
• Isolation tested: 2120 V DC (bus to analog), 500 V DC (bus to ground), 2120 V DC (analog to ground).

Frequently Asked Questions (FAQ)

• Q: Does this module support 2-wire transmitters without external power?
  No, 2-wire transmitters require an external supply; the module does not provide load voltage L+.
• Q: Can I connect resistance sensors?
  Yes, it supports 0–600 Ω resistance with 2-, 3-, or 4-wire connections (usable up to 500 Ω).
• Q: What is the maximum cable length for analog signals?
  You can use shielded cables up to 200 meters.
• Q: Is the module isolated from the backplane bus?
  Yes, it provides full isolation between channels and the backplane bus (tested at 2120 V DC).
• Q: What is the conversion time per channel?
  The basic conversion time is 23/25 ms (selectable for 50/60 Hz).
• Q: Does it support thermocouples or RTDs?
  No, it only handles voltage, current, and resistance (not thermocouples or RTDs).
• Q: Do you have stock available?
  Yes, we keep this module in stock for immediate shipment.

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

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