6ES7421-1FH20-0AA0 SIEMENS Digital input module with 16 isolated UC 120/230 V channels, optimized for SIMATIC S7-400 systems.
Backorder available · Factory lead time 2–3 weeks.
The 6ES7421-1FH20-0AA0 is a high-quality digital input module engineered by SIEMENS for use in the SIMATIC S7-400 automation platform. It offers 16 electrically isolated input channels designed to handle UC 120/230 V signals. Built to comply with IEC1131-2 Type 2 standards, this module ensures compatibility with industrial input devices such as push buttons, switches, and proximity sensors. It is ideal for applications requiring dependable signal acquisition in high-voltage environments.
Each input channel is isolated to provide enhanced noise immunity and system stability. The module is optimized for robust performance in complex control systems and is well suited for centralized installations. Its efficient and safe operation makes it a reliable choice in sectors such as manufacturing, process control, and infrastructure automation.
The front of the module features green LEDs to indicate the state of each input. Red LEDs provide visual feedback for any internal or external faults, allowing for rapid fault detection and system diagnostics. These indicators help reduce troubleshooting time and improve operational efficiency.
Mechanically, the unit is housed in a rugged plastic enclosure designed to withstand industrial conditions. It supports fast, tool-free installation using a plug-in front connector. Labeling strips are provided to identify input channels clearly, aiding setup and maintenance. With its compact design, the module saves space in the control cabinet while offering high performance and reliability.
Product Code: 6ES7421-1FH20-0AA0
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| SKU / Model | 6ES7421-1FH20-0AA0 |
|---|---|
| Weight | 0.776 kg |
| Dimensions | 229 × 302 × 41 mm |
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