“Why do I need a lighting controller if the light is on all the time?”
LEDs age, to ensure that the lighting level is maintained their intensity needs to be adjusted to compensate for it. A lighting controller helps to automate this
This level of control enables you to synchronise your lighting to your production line, at the right light level (even if overdriving them)
When a Trigger Pulse (A) is initiated, there can be a Trigger Delay (B), before a Lighting Intensity (C) is driven, for a duration of the Pulse Width (D)
CONTROL MULTIPLE LIGHTS
Series of pulses at different widths and intensities can be used for different lights. All of which can be grouped into sequences (which can be reset to ensure it’s always in sync)
AUTOMATIC INTENSITY ADJUSTMENT
By using an intensity check within the image processing software, the brightness of the light can be monitored...
...this can then be fed as a signal to the controller, to dynamically alter the brightness of the lights
Some controllers have a series of buttons and an LCD screen built directly into them, allowing you to configure the settings on the controller itself
SERIAL / ETHERNET
Configurations can be set up using a simple set of string commands, via RS232, TCP/IP or UDP
A Web broswer can be used to access the internal web pages of the controller, providing a graphical interface for status updates and parameter adjustments
The light output of an LED is not a result of the voltage, it’s a result of the current through the device. So, to efficiently drive them precise control of the current is needed - especially when overdriving
In the next part of this series we'll be diving into how lighting controllers have become Industry 4.0 and the internet of things "ready". Sign up to our newsletter if you'd like to be notified when it's launched.
STEMMER IMAGING AG