Large diesel generators are often used to provide backup power in data centers. However, these powerful motors can create excessive vibration, an early indicator of mechanical issues that may lead to damage, costly repairs, or unplanned downtime. In some cases, unchecked vibration can even pose safety risks.
To mitigate these risks, vibration sensors or accelerometers can be installed to detect abnormal vibration levels. Alarm trips then monitor these sensors, triggering a local trip signal to the motor when thresholds are exceeded. If required, the vibration data can also be retransmitted back to the control system via the alarm trip’s analog outputs.
The diagram above illustrates the STA Functional Safety Limit Alarm Trip logic solver, which is IEC 61508 certified. For applications that are not part of a Safety Instrumented System (SIS), a standard alarm trip is sufficient, making the SPA2 Programmable Limit Alarm Trip an excellent alternative.
Key Attributes:
- Capable of monitoring and powering vibration sensors
- Field or PC-Programmable
- Auxiliary analog output available for building management system
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