


6ES7421-1BL01-0AA0 SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC
$110.00 原价为:$110.00。$87.00当前价格为:$87.00。
| Input current | ||
| from backplane bus 5 V DC, max. | 20 mA | |
| Power loss | ||
| Power loss, typ. | 6 W | |
| Digital inputs | ||
| Number of digital inputs | 32 | |
| Input characteristic according to IEC 61131 | Type 1 | |
| Number of simultaneously controllable inputs | ||
| ● Number of simultaneously controllable inputs | 32 | |
| Input voltage | ||
| ● Type of input voltage | DC | |
| ● Rated value (DC) | 24 V | |
| ● for signal “0” | -30 V DC to +5 V DC | |
| ● for signal “1” | 13 V DC to 30 V DC | |
| Input current | ||
| ● for signal “0”, max. (permissible quiescent current) | 1.3 mA | |
| ● for signal “1”, typ. | 7 mA | |
| Input delay (for rated value of input voltage) | ||
| for standard inputs | ||
| — at “0” to “1”, min. | 1.2 ms | |
| — at “0” to “1”, max. | 4.8 ms | |
| — at “1” to “0”, min. | 1.2 ms | |
| — at “1” to “0”, max. | 4.8 ms | |
| Cable length | ||
| ● shielded, max. | 1 000 m | |
| ● unshielded, max. | 600 m | |
| Encoder | ||
| Connectable encoders | ||
| ● 2-wire sensor | Yes | |
| — permissible quiescent current (2-wire sensor), max. | 1.5 mA | |
| Interrupts/diagnostics/status information | ||
| Diagnostics function | No | |
| Diagnostics indication LED | ||
| ● Status indicator digital input (green) | Yes | |
| Potential separation | ||
| Potential separation digital inputs | ||
| ● between the channels | No | |
| ● between the channels, in groups of | 32 | |
| ● between the channels and backplane bus | Yes | |
| Isolation | ||
| Isolation tested with | 500 V AC/707 V DC, type test | |
| Dimensions | ||
| Width | 25 mm | |
| Height | 290 mm | |
| Depth | 210 mm | |
| Weights | ||
| Weight, approx. | 500 g | |


1. Order Processing: Orders are processed within 1-2 business days after payment confirmation. Weekends and holidays are excluded from processing times.
2. Shipping Options & Timelines :
a.Standard Shipping: 3-7 business days (varies by destination).
b.Expedited Shipping: 2-3 business days (additional fees apply).
c.International Shipping: 7-15 business days (customs may affect delivery).
Notes:
For in-stock items, we ship within 5 business days after payment is received.
Out-of-stock or custom products will have timelines confirmed via email after order placement.
3. Tracking Your Order: You’ll receive a tracking number via email once your order ships. Use our Order Status Portal to check real-time updates.
4. Delivery Issues?
Failed deliveries: Contact your local carrier first, then reach out to us.
Wrong/missing items? Email us within 7 days of delivery with order details.
5. Important Notes Customs & Duties: International buyers are responsible for any import fees.
Address accuracy: Double-check your shipping details—we can’t modify orders once processed!
Questions? Visit our FAQs or contact: Info@siesourcecontrol.com







评价
目前还没有评价