AI BriefingFail-Safe Design Analysis of Latching Relays for Cooling Signal Failure in AI Data Centers
·2026.10.21 14:00
Key point
Latching relays are applied to prevent simultaneous shutdown of cooling equipment caused by PLC signal loss.
Details
- AI data centers have high heat dissipation density per rack, causing servers to rapidly exceed critical thresholds when cooling is interrupted
- Beyond power outages, there is a risk of simultaneous shutdown of the entire facility due to the loss of Dry Contact contacts caused by signal failure from PLC errors or communication abnormalities
- Latching relays mechanically maintain the contact state after pulse control, ensuring that downstream devices retain their last state even when a PLC failure occurs
- This structure is a general safety technology that can be extended and applied to all PLC-based automatic control electrical equipment, including cooling systems, generator interlocking, and electric valve control
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