Glossary · Automation fundamentals, platforms and components
Signaling device
Also known as: Signal generator (signaling device), Signal transmitter
German: Signalgeber
In automation, a signaling device (German: Signalgeber) is a device that emits a signal: either a transducer that produces an electrical signal from a physical event, such as a switch or sensor, or an optical or acoustic indicator, such as a stack light, beacon or horn, that informs people about machine states.
- Automation components
In one sentence
A signaling device emits a signal: a sensor or switch producing an electrical signal, or a light or horn informing people about machine states.
Example
The stack light shows green for automatic mode, yellow for a warning and red for a fault, and a horn sounds before the conveyor starts.
How it applies
- Engineering: For indicator lights and acoustic signals, IEC 60204-1 and the IEC 60073 coding principles give meanings to colors, for example red for emergency or hazardous conditions. Acoustic start warnings are one measure against Unexpected startup where people could be in the danger zone.
- Operation: Too many flashing lights and horns lose their meaning. Keep signal coding simple and consistent across a plant.
- Documentation: The operating manual must explain every light color, flashing pattern and tone. Optical and acoustic signals complement but do not replace the Warning message and Safety sign content.
Signaling device vs. signal generator
In English, "signal generator" usually means a test instrument that produces waveforms for measurement. The German "Signalgeber" rather means a device that gives a signal, so use "signaling device" or "signal transmitter" in translations.