Feilsignal

Feilsignal is a Norwegian term used to denote a signal that indicates a fault, error, or abnormal condition in a technical system. In engineering and safety literature it is used to distinguish signals that indicate problems from those that represent normal operation. The concept is general and applies across electrical, electronic, mechanical, and software-based systems.

Common contexts for feilsignal include electrical installations, industrial automation, building management systems, and transportation signaling. A feilsignal can originate from sensors, protective devices, or diagnostic routines, and may be triggered by overloads, component failures, misconfigurations, or safety breaches. The exact meaning and required response depend on the specific system and its safety and reliability requirements.

Representation varies by system: visual indicators such as LEDs or display messages, audible alarms, or data-encoded fault signals transmitted to control rooms or automation networks. In many cases multiple feilsignals are bundled into a fault code or assigned an alarm priority level to guide the response and ensure a timely remedy.

Response to a feilsignal typically involves fault diagnosis, isolation of the fault, repair or replacement of faulty components, and verification that normal operation has been restored. Good practice includes proper logging, timely notification to operators, and adherence to established procedures, particularly in safety-critical environments. The term is closely related to, and often used interchangeably with, fault signal, error signal, or alarm within broader fault management and safety frameworks.