Siemens 6ES7431-1KF20-0AB0 SM 431 analog input module, 8 ch, 14 bit
MPN6ES7431-1KF20-0AB0
NRND
Siemens 6ES7431-1KF20-0AB0 — now in phase-out and being discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.
$887.20 – $1,411.00Ref. price · indicative, final on quote
StockContact for availability
Lead timeCall for availability wk
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Inputs & Signal Ranges
| Parameter | Value |
|---|---|
| Number of analog inputs | 8 |
| Current input range | Yes |
| Voltage input range | Yes |
| Resistance measuring ranges | Yes |
| RTD support (resistance thermometer) | No |
| Thermocouple support (types) | No |
| Input range: 4 to 20 mA | Yes |
| Input range: -10 to +10 V | Yes |
| Input range: 0 to 600 Ohm | Yes |
| Current measurement: 2-wire transducer | Yes |
| Current measurement: 4-wire transducer | Yes |
| Input resistance (4 to 20 mA) | 50 kΩ |
| Input resistance (-10 to +10 V) | 100 kΩ |
| Permissible input voltage, max. (destruction limit) | 18 V; 18 V continuous, 75 V for 1 ms (mark to space ratio 1:20) |
| Permissible input current, max. (destruction limit) | 40 mA; Permanent |
| Max. shielded signal cable length | 200 m |
Measurement Performance
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 14 bit; 14 / 14 / 14 |
| Temperature measurement error (±) | 0.03 %/K |
| Voltage measurement error (±) | 0.6 %; 0.6 % at ±1 V; 0.75 % at ±10 V, 1 to 5 V |
| Current measurement error (±) | 0.7 %; at ±20 mA, 4 to 20 mA |
| Interference voltage suppression (at interference frequency) | none / 400 / 60 / 50 Hz |
Diagnostics & Monitoring
| Parameter | Value |
|---|---|
| Diagnostics function | No |
Isolation
| Parameter | Value |
|---|---|
| Isolation: channels to backplane bus | Yes |
| Isolation: between channels | No |
| Isolation test voltage | 2 120 V DC between bus and analog section; 500 V DC between bus and local ground; 500 V DC between analog part and L+/M; 2 120 V DC between analog part and local ground; 2 120 V DC between L+/M and local ground |
Power
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V; Only required for supplying 2-wire transmitters |
| Power loss, typ. | 4.9 W |
| Reverse polarity protection | Yes |
Mechanical
| Parameter | Value |
|---|---|
| Width | 25 mm |
| Height | 290 mm |
| Depth | 210 mm |
| Weight, approx. | 500 g |
Product details
MPN
6ES7431-1KF20-0AB0