5
2 Description
2.1 Theory of Operation
The LED Line Controller provides electrical power at controlled constant current to the
LED’s through the connecting cable.
Indicator lights located on the front panel of the controller provide visual confirmation that
the LED’s are in or out of their acceptable range. In the event of temperature fault the
power supply will automatically shut down to protect the LED line array.
When the cure cycle is initiated, light is immediately irradiated at or near maximum
intensity from the LED’s.
The irradiation process begins when the adhesive is placed under the LED’s. The two
primary variables that control the irradiation process are the time of exposure and the
intensity of the light (irradiance). For a given irradiance, the exposure time required to
fully cure the adhesive depends primarily on the properties of the adhesive and the
optical properties of the substrate that the light is transmitted through.
Available Output Signals
Ready
If the dispensing cycle is finished and no fault occurs, this contact closes.
Fault
If an error occurs the corresponding LED of the channel 1-4 will light. It will also appear
as a signal on XS1. The signal appears if one or more of the following errors occur.
– LED overvoltage
– Wire break Line Array
– Over temperature thermo sensor
– Wire break thermo sensor
– Fan error Line Array
The start of a irradiation cycle via the button is not locked when Fault is indicated.
It is locked when the start is triggered via the interface XS 1 (Footswitch or external
signal from a higher-ranking controller).
Both signals are available as dry contacts at the XS 1 start interface for optional
connection to a higher-ranking controller or a warning light, see section 8.2.
