Product details
Product Overview
- Siemens 6ES7431-1KF20-0AB0 – analog input module for SIMATIC S7-400
- IV separatim Analog initus channels
- 14-bit resolution with overrange capability
- Handles voltage, current, and resistance signals
- Fast conversion time of 52 µs per channel
Technical Specifications
- Generalis notitia
- Brand: Siemens
- model: 6ES7431-1KF20-0AB0
- Series: SIMATIC S7-400
- Product type: Analog input module (SM 431)
- Pondus: approx. LX g
- potentia copia
- Load voltage L+: 24 V DC (for 2-wire transmitters)
- Reverse verticitatem praesidium: Sic
- Current from L+ (max): ma 200 (8 transmitters)
- Backplane current: ma 1000 @ 5 V DC
- Potentia amissa: typ. 4.9 W
- Proprietates inputationis
- Numerus inituum: XX Analog channels
- Voltage/current inputs: 8 channels
- Resistance inputs: 4 channels (shared)
- consilium: 14-bit with sign
- Destruction limit (voltage): 18 V continuous / 75 V for 1 ms
- Destruction limit (current): 40 mA permanent
- Constant measurement current: 1.67 mA (for resistance)
- Input iugis
- Voltage ranges: ±1 V, ±10 V, 1‑5 V
- Current ranges: ±20 mA, 4‑20 mA
- Resistance range: 0‑600 Ω
- Input impedance (voltage): 10 MΩ / 100 kΩ
- Input impedance (current): 50 Ω / 50 kΩ
- Performance & accuracy
- Basic conversion time: 52 μs per channel
- Module scan time (all channels): 0.42 s
- Temperature error: 0.03 %/K
- Operational error (voltage): ±0.6‑0.9 %
- Operational error (current): ±0.7‑0.8 %
- Operational error (resistance): ±0.7‑1.0 %
- Isolation & environment
- Euphorbiaceae: V DC 2120 (bus to analog)
- Channel isolation: No (shared reference)
- Shielded cable length: max. 200 m
- ISBN: 25 × × 290 mm 210
peritus Review
- This module delivers reliable analog measurement for S7-400 systems.
- 14-bit resolution provides good precision for most industrial signals.
- Fast 52 µs conversion suits applications with moderate speed demands.
- Lack of diagnostics means you need external monitoring for fault detection.
- Resistance measurement works with 2, 3, or 4-wire connections.
Perspicacia Moderatoris
- Choose this module for mixed voltage/current/resistance applications.
- The 0.42 s scan time handles 8 channels simultaneously.
- Consider external signal conditioners for thermocouple or RTD inputs.
- Budget for spare modules – no built-in diagnostics for troubleshooting.
Applicationes Idoneae et Systemata Compatibilia
- Systema compatibilia
- Systema PLC SIMATIC S7-400 (omnes CPU)
- Armamenta et fontes potentiae S7-400
- ET 200M distributed I/O (with IM 153)
- typical applications
- Process monitoring with 4-20 mA pressure/temperature sensors
- Voltage measurement from 0‑10 V or ±10 V transducers
- Resistance measurement for potentiometers or slide-wire sensors
- Mixed signal environments with multiple sensor types
, installation,
- Gradus montandi
- Modulum in locum liberum S7-400 inserere.
- Connect 24 V DC for 2‑wire transmitter power
- Wire field devices to the 8 input terminals
- Use shielded cable for all analog runs
- Consilia configurationis
- Set input range in hardware configuration
- Select integration time for noise rejection (50/60 Hz)
- Enable only used channels to reduce scan time
- Monitor raw values via PLC program
Sustentatio et Depuratio
- No diagnostic LEDs – check PLC program for out-of-range values
- Verify input signals with a handheld multimeter
- Check wiring for open circuits or shorts
- Clean terminals and tighten connections annually
Comparatio cum similibus exemplaribus
- Compare est 6ES7431-1KF10-0AB0 (8 AI, 13-bit, slower scan)
- Compare est 6ES7431-7KF00-0AB0 (8 AI, 16-bit, diagnostics)
- Compare est 6ES7431-1KF00-0AB0 (older version, 12-bit)
Contenta Sarcinae et Garantia
- sarcina comprehendo
- 1x Siemens 6ES7431-1KF20-0AB0 Module
- 1x documentatio producti (demptio digitalis)
- 1x tessera cautionis (12 menses)
- Navigatio et warantia
- Duodecim mensium praestatio contra defectum faciens
- Expressa vectura per FedEx, UPSaut DHL
- Missio rerum in promptu intra horas XII-XXIV
Frequenter Interrogata De quaestionibus
- Q: Does this module support thermocouple inputs?
- A: No, this module does not accept thermocouple signals. Use 6ES7431-7KF00-0AB0 for thermocouple support.
- Q: Can I connect RTD sensors directly?
- A: No, this module only supports resistance measurement (0‑600 Ω). Use external converters for RTD sensors.
- Q: What is the scan time for all 8 channels?
- A: The module scans all 8 channels in 0.42 seconds. Each channel takes 52 µs to convert.
- Q: How do I connect a 4‑20 mA 2‑wire transmitter?
- A: Connect the transmitter’s positive wire to L+ (24 V). Connect the negative wire to the module input. Use the module’s internal 50 Ω resistor.
- Q: Does this module provide diagnostic alarms?
- A: No, this module has no diagnostic function. You need to monitor values in the PLC program for out-of-range conditions.
Dux Emptionis et Consilia Selectionis
- Choose this module for 8-channel mixed analog inputs with 14-bit resolution.
- For thermocouple or RTD inputs, select 6ES7431-7KF00-0AB0 instead.
- If you need 16-bit resolution, consider 6ES7431-7HF00-0AB0.
- Use shielded cable for all analog runs up to 200 m.
- Verify your CPU firmware supports this module (FW 1.0 or higher).
Contactus & Support
- Email: venditiones@powergearx.com
- whatsapp: + 86 18030005825 (preme ut colloquaris)
- Auxilium technicum perpetuum (24/7) ad institutionem et difficultates solvendas
Iura omnia reservantur societati Powergear X Automation Limited, MMXV.
Source: https://www.powergearx.com/
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