EN
Siemens SIMATIC S7-400 6ES7421-7DH00-0AB0 SM 421 Digital Input
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Confirm on nameplate
Warranty: 12 MonthsManufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Confirm on nameplate
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
- Overview
- Product Overview
- Key Functions
- Official Specifications
- Frequently Asked Questions
- Compatibility & Ordering Notes
- Hot Selling Models
- Recommended Products
Overview
6ES7421-7DH00-0AB0 SM 421 isolated digital input module
Official Siemens identification and technical data for 6ES7421-7DH00-0AB0, prepared for accurate replacement matching and quotation.
At a Glance
| Article Number | 6ES7421-7DH00-0AB0 |
|---|---|
| Manufacturer | Siemens |
| Platform | SIMATIC S7-400 |
| Product Type | SM 421 isolated digital input module |
| Country of Origin | Confirm on nameplate |
Exact Identification
Match the complete Siemens article number 6ES7421-7DH00-0AB0 and the photographed hardware revision.
Official Configuration
Provides 16 isolated digital inputs for UC 24 to 60 V.
Configuration Check
Verify ratings, terminals, system compatibility and revision before replacement.
Product Overview
6ES7421-7DH00-0AB0 is officially identified by Siemens as SIMATIC S7-400 SM 421 isolated digital input module with 16 inputs for UC 24 to 60 V, including alarm and diagnostic functions.
The complete article number 6ES7421-7DH00-0AB0 should be matched against the installed hardware, nameplate and official project documentation. Similar products can differ in electrical ratings, interfaces, terminal design, packing quantity or approved system use.
Key Functions
Model-Specific Configuration
6ES7421-7DH00-0AB0: Provides 16 isolated digital inputs for UC 24 to 60 V.
System Interface
6ES7421-7DH00-0AB0: Includes Siemens-listed alarm and diagnostic functions.
Replacement Control
6ES7421-7DH00-0AB0: Siemens lists a 0.790 kg net weight and 23.30 × 30.20 × 4.10 cm packaging dimensions.
Official Specifications
| Manufacturer | Siemens |
|---|---|
| Series | SIMATIC S7-400 |
| Article Number | 6ES7421-7DH00-0AB0 |
| Product Type | SM 421 isolated digital input module |
| Module Type | SM 421 digital input |
| Digital Inputs | 16 isolated inputs |
| Input Voltage | UC 24 to 60 V |
| Functions | Alarm and diagnostics |
| Net Weight | 0.790 kg |
| Packaging Dimensions | 23.30 × 30.20 × 4.10 cm |
| Official Product Status | Product phase-out announced |
| Phase-out Date | Since 1 October 2025 |
Frequently Asked Questions
What is 6ES7421-7DH00-0AB0?
6ES7421-7DH00-0AB0 is a Siemens SM 421 isolated digital input module for the SIMATIC S7-400 family. Siemens identifies 6ES7421-7DH00-0AB0 as SIMATIC S7-400 SM 421 isolated digital input module with 16 inputs for UC 24 to 60 V, including alarm and diagnostic functions.
Which system is 6ES7421-7DH00-0AB0 designed for?
6ES7421-7DH00-0AB0 is designed for the SIMATIC S7-400 environment. Compatibility requires the complete 6ES7421-7DH00-0AB0 article number, electrical ratings, connectors or terminals and installed hardware revision.
What does 6ES7421-7DH00-0AB0 provide?
6ES7421-7DH00-0AB0 provides the official configuration recorded by Siemens: Provides 16 isolated digital inputs for UC 24 to 60 V. Includes Siemens-listed alarm and diagnostic functions.
Which ratings should be checked for 6ES7421-7DH00-0AB0?
For 6ES7421-7DH00-0AB0, verify every Siemens-listed voltage, current, interface, signal and environmental rating against the installed system before replacement.
How should 6ES7421-7DH00-0AB0 be installed?
6ES7421-7DH00-0AB0 must be installed by qualified personnel with power isolated. Confirm the specified mounting, terminal or connector arrangement and protective measures before energizing 6ES7421-7DH00-0AB0.
What should be verified before ordering 6ES7421-7DH00-0AB0?
Before ordering 6ES7421-7DH00-0AB0, match the complete article number, photographed nameplate, hardware revision, packing quantity and required accessories against official Siemens documentation.
How is 6ES7421-7DH00-0AB0 prepared for shipment?
6ES7421-7DH00-0AB0 is packed in an antistatic, moisture-resistant protective carton. Courier, tracking and delivery time for 6ES7421-7DH00-0AB0 are confirmed for the destination before dispatch.
Compatibility & Ordering Notes
Compatibility Checklist for 6ES7421-7DH00-0AB0
- Match the complete article number 6ES7421-7DH00-0AB0 without shortening the suffix.
- Confirm the installed SIMATIC S7-400 system and hardware revision.
- Verify: Provides 16 isolated digital inputs for UC 24 to 60 V.
- Confirm included terminals, connectors and accessories in the written quotation.
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