Siemens 6ES7 431-1KF20-0AB0
€1,090.00
International delivery
The individual quotation states the shipping method and costs for the item and destination.
Product description
The documented product data also list STEP-7. The 32-channel configuration, 24 V DC signal level, IEC-61131 Type 2 input characteristic and permissible cable length are decisive when selecting a replacement. Documented identifiers and values: 6ES7; 421-1BL00-0AA0; S7-400; 421; 32; 24 V; 421; 32; 24 V; 11 V; 30 V; 5 V; 61131. The input characteristics specify 11 to 30 V for signal 1, -3 to 5 V for signal 0, and input current of 6 to 8 mA at signal 1. The module uses a 24-V-DC electronics supply, includes reverse-polarity protection and permits all 32 inputs to be activated simultaneously according to the manual. It is used when an existing S7-400 station must acquire 24-V-DC digital signals from switches, limit positions, sensors or 2-wire proximity sensors. Further documented data include an input delay of 1.2 to 4.8 ms, a green status LED for each channel, typical power dissipation of 6 W and dimensions of 25 x 290 x 210 mm. For wiring, maximum cable lengths of 600 m unshielded and 1000 m shielded are relevant. The Siemens reference manual identifies this version as DI 32 x 24 VDC with 32 inputs arranged in one isolated group. This makes clear that Siemens 6ES7 421-1BL00-0AA0 is a 32-channel input module for process signals rather than a CPU, power supply or digital output module.
The item supplied will have the stated manufacturer or type number and the stated condition category. Serial number, manufacturing date, labels, colour, packaging and normal signs of use or storage may differ. Specifications
Unless expressly confirmed, technical information is provided to identify the device type. The complete manufacturer or type number is decisive.
| Manufacturer | Siemens |
|---|---|
| Product series | SIMATIC S7-400 / SM 421 |
| Manufacturer/Order/Identification number | 6ES7 421-1BL00-0AA0 |
| Device type | SM 421 digital input module |
| Inputs | 32 digital inputs |
| Rated voltage | 24 V DC |
| Signal 1 | 11 V to 30 V |
| Signal 0 | -3 V to 5 V |
| Input current | 6 mA to 8 mA at signal 1 |
| Input delay | 1.2 ms to 4.8 ms for 0 to 1 and 1 to 0 |
| Sensor type | Switches and 2-wire proximity sensors conforming to IEC 61131 Type 2 |
| Cable length | Max. 600 m unshielded, max. 1000 m shielded |
| Electrical isolation | Between channels and backplane bus; not between individual channels |
| Current consumption | Max. 30 mA from the backplane bus and max. 30 mA from L+ |
| Power dissipation | Typically 6 W |
| Status indication | Green LED for each channel |
| Dimensions | 25 x 290 x 210 mm |
| Weight | Approx. 600 g |
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Which identifier is decisive for Siemens 6ES7 421-1BL00-0AA0?
The full manufacturer and type number 6ES7 421-1BL00-0AA0 is decisive for the order. Selection of the required version and verification for the customer’s installation remain the responsibility of the customer or its qualified personnel and should be based on the manufacturer documentation.
What applies if an item develops a defect within 14 days?
For the condition categories “Used, removed from an installation” and “New, old stock”, the contractual 14-day right of return in the event of a defect applies. The defect must occur within 14 calendar days after delivery and be reported in text form within the same period.
In particular, the REHA tamper-evident seal must remain fully intact and our RMA approval is required before return. In an accepted case, we decide between replacement and refund. Details in Section 11 of the Terms.
Which shipping methods and delivery times are available?
The shipping method, shipping cost and estimated delivery time are confirmed for the specific order. Depending on the item, destination and urgency, we can check parcel, express or freight shipping as well as collection.
A delivery date is binding only if we expressly confirm it as binding.
Which payment terms apply?
The payment terms stated in the checkout or order confirmation apply. Depending on the order and customer, payment is made in advance or against invoice.
International deliveries and deliveries to new customers are generally made against advance payment unless we expressly confirm another payment arrangement.
Can I return an item ordered incorrectly or found incompatible?
No. There is no general B2B right of return, exchange, cancellation or withdrawal. Incorrect or duplicate orders and a lack of suitability or compatibility with the customer’s installation are not covered by the contractual 14-day right of return in the event of a defect. Details in Section 12 of the Terms.
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