2 Description
2.1 Theory of Operation
The LED flood array consists of 144 reflectorized LED’s that produce an effective curing
area of approximately 100mm x 100mm. The housings are designed to be stackable side
by side without creating “dark” spaces between units.
The controller/power supply, (not included), provides electrical power to the LED’s
through the connecting cable, (not included).
Indicator lights located on the front panel of the power supply 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
array.
When the cure cycle is initiated, light is immediately irradiated at or near maximum
intensity from the LED’s.
The LED arrays are available in three different wavelengths to match the absorbing
properties of the Loctite® adhesive, and thereby maximize the efficiency of the curing
process.
The wavelengths available are:
UVA (Part # 1167582) Intended for use with Loctite® UV curing products
405 nM (Part # 1167593) Intended for use with Loctite® UV/VIS curing products
Indigo (Part # 1167589) Intended for use with Loctite® Indigo™ product line
The curing process begins when the adhesive is placed under the LED’s. The two
primary variables that control the curing process are the time of exposure and the strength
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.
3 Operating the Unit
3.1 Electrical Connections ( With No AC Power To Unit)
-
Plug one end of the power cable into the 15 pin D-sub connector located on the
rear panel of the LED housing. Plug the opposite end into the 15 pin D-sub
connector located on the rear panel of the power supply. Make sure that the
connections at both ends are secure.
-
For manual operation, plug the footswitch into the 9 pin D-sub connector marked
“Start Signal Input and Fault Output” located on the rear panel of the power
supply.
-
For automated control, connect external PLC to pins one and nine of the “Start
Signal Input and Fault Output”.
-
When in the manual operating mode the LED array will remain on as long as
continuity is maintained across pins one and nine.
When in timed mode continuity must be made across pins 1 and 9 only
momentarily for the LED array to come on for the amount of time selected on the
front panel timer.
