15
035-00540R-r4
7
Using the LED Head
The peak wavelength of the UV LED Head is 365nm or 395nm +/- 5nm, depending on model.
For all models, adjusting the UV LED Head intensity can be actuated by an external controller via the PLC
interface. Refer to
Section
6 for Pin-Outs.
Input voltage vs. desired intensity; 5V = 100% and 1V = 20%. A minimum voltage of 1V is required for light
source operation.
Note:
The light source will maintain a 20% intensity when the input voltage is in the range of ~0.5-1V. If
the input voltage is below this, the light source will turn off.
Ensure the UV LED Head indicator is illuminated to a
steady
green before applying UV power to the head.
The UV LED Head indicator will illuminate to a
steady
amber indicating UV is on. When UV is off, the indicator
will revert back to a
steady
green indicating UV is off.
The UV LED Head is capable of responding to PLC control signals in less than 0.2 seconds.
7.1
Understanding the LED Indicators
LED Indicator
Condition
Steady green
System Ready; no critical faults
Steady amber
UV LED turned ON
Steady red
Critical fault
Temperature Fault
LED Fault
System Error
Slow flashing green
POST and Initialization
Input voltage is less than 46V or greater than 50V. Unit is still
functional.
Slow flashing red
Major and critical fault
Slow flashing amber
UV LED ON with 48V input voltage out of requirement
Fast flashing green
Warranty status - operating hours is < 9000
Fast flashing amber
Warranty status - operating hours = between 9,000 and
10,0000
Fast flashing red
Warranty status - operating hours is >10000
Table 3 LED Indicator Status (UV LED Head)
A transition from high-to-low is required to clear the alarm signals. Use the PLC function:
Pin #
Description
I/O
Behaviour
14
Clear fault/
LED hours
In
0V to 0.6V (Open) Logic Low
2.4V to 24V Logic High
High-to-low transition = clear faults
Low-to-high transition = LED hours
Caution
: Routine maintenance should only be completed by a user qualified personnel to avoid risk of injury
to the end user.
No user serviceable components are located within the power supply or UV
LED Head enclosures.
7.2
Fault Status
PLC Output
LED Fault: At least one module fails to turn on.
Thermal Fault that includes:
