If the red light is solid, it might indicate a lack of material, a jam or a failed inspection. white-machine-specific functions that are defined by the user.blue-frequently used to request help from maintenance, a supervisor or other factory floor employees. green-most typical way of expressing that the machine is in good operating order.yellow-any warning condition that may or may not cause a machine to shut down.red-any significant occurrence or state of the machine that might cause a shutdown.While there are no hard and fast rules about which colors correlate to different machine states, there are generally accepted ones: The colors of an indicator light are generally used to identify a process or machine status. The color-coded segments are engineered to provide a clear visual cue that provides feedback to the operator.Īlso read: What do stack lights mean in the visual factory? Independently operated segments in any combination of red, yellow, green, blue or clear white are either off, solid-on or flashing. A stack light typically has as many as five distinct colored segments. Stack lights are color-coded indicators that are layered on top of one another in a columnar structure to represent various machine or process conditions. They are a type of andon, which are production systems that detect problems as they happen. Stack lights give operators, technicians, production managers and manufacturing staff visible and audible indicators of a machine's status.
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