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1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
| Specification | Description |
|---|---|
| Part Number | 6ES7421-1EL00-0AA0 |
| Alternative Part Number | 6ES74211EL000AA0 |
| Manufacturer | Siemens |
| Part Category | PLC Systems |
| Part Family | Simatic S7 |
| Product Type | Digital Input Module |
| Input Current | 200 mA (from backplane bus 5 V DC, max.) |
| Operating Voltage | 120 V ac/dc |
| Number of Digital Inputs | 32 |
| Input Voltage Type | AC/DC |
| Rated Value (UC) | 120 V; 47 ... 63 Hz |
| Signal "0" Voltage Range | 0 to 20 V UC |
| Signal "1" Voltage Range | 79 to 132 V AC; 80 to 132 V DC |
| Input Current for Signal "1" | Typical 2 mA; 2 to 5 mA |
| Input Delay | 5 ms to 25 ms for "0" to "1"; 5 ms to 25 µs for "1" to "0" |
| Cable Length | Shielded, max. 1 000 m; Unshielded, max. 600 m |
| Connectable Encoders | 2-wire sensor (permissible quiescent current, max. 1 mA) |
| Diagnostics Indication LED | Status indicator digital input (green) |
| Potential Separation | Between the channels, in groups of 8; Between the channels and backplane bus |
| Isolation | Isolation tested with 1 500 V AC |
| Dimensions | Width 25 mm, Height 290 mm, Depth 210 mm |
| Weight | Approx. 600 g |
The input voltage range for the SIMATIC S7 Series Digital Input Module is rated at 120 V AC/DC, with a signal '0' recognised from 0 to 20 V UC and a signal '1' from 79 to 132 V AC or 80 to 132 V DC.
The module supports 32 digital inputs, which can all be controlled simultaneously.
Yes, the module can be connected to 2-wire sensors, with a permissible quiescent current of up to 1 mA.
The dimensions of the module are 25 mm in width, 290 mm in height, and 210 mm in depth.
The typical power loss for the module is approximately 6.5 W.
Yes, there is potential separation between the channels and also between the channels and the backplane bus.
The maximum cable length for shielded cables is 1,000 meters and for unshielded cables, it is 600 meters.
The module features isolation tested with 1,500 V AC to ensure safe operation and protection against electrical interference.
The module provides diagnostics through an LED indicator that shows the status of the digital inputs.
The input delay for standard inputs is a minimum of 5 ms and a maximum of 25 ms for '0' to '1' transitions, and a minimum of 5 ms and a maximum of 25 µs for '1' to '0' transitions.
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
All parts new or reconditioned are covered by EU Automation 12 month warranty
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