PP8xx LED Controller - User Manual
Three modes of operation can be provided independently to each
channel:
Continuous:
In continuous mode, the output is constant.
Pulsed:
Also referred to as 'strobed', this output mode produces one
pulse on the receipt of a trigger input. The pulse width can range from 1μs
to 300ms in 0.1μs steps. The delay can range from 4μs to 300ms in 0.1μs
steps.
Switched:
In switched mode, a trigger input can be used to switch the
output current on and off. The output is only enabled when the input has a
voltage on it.
Triggers occur on the leading edge of the input, that is, on the transition
from logic 0 to logic 1. Output 1 is triggered from Input 1, output 2 from
Input 2, and so on.
Configurations can be saved in non-volatile memory so that the PP8xx will
resume operation after a power cycle.
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PP8xx LED Controller - User Manual
2
Safety
Read this before using the PP8xx. Always observe the following safety
precautions. If in doubt, contact your distributor or Gardasoft Vision. The
following symbols mean:
Warning:
Read instructions to understand possible hazard
Warning:
Surface may get hot.
Warning:
Possible hazardous voltage.
Where these symbols appear in the manual, refer to the text for
precautions to be taken.
2.2
Heat
Ensure the PP8xx is mounted correctly (see
Section 5, Mounting the
PP8xx
), and that you do not exceed any of the ratings for the unit (see
Section 11, PP8xx reference information
).
At its maximum ratings, the PP8xx’s enclosure can exceed 75°C which is
sufficient to cause a burn if touched. Place in a position where personnel
cannot accidentally touch it and ensure there is a free flow of air around
the unit.
2.3
Electrical
The PP8xx produces high energy pulses. Take care to connect the
outputs correctly and protect the output wiring and load from any short
circuits. When switched off, energy remains stored in the PP8xx for about
15 seconds.
The PP8xx does not have complete tracking isolation of inputs (including
triggering and communications ports) and outputs, therefore, please
observe the following guidance:
Computer equipment that is connected to the communication or trigger
ports must be internally powered
or separated from mains electricity by
double insulation/reinforced isolation
or be approved to IEC 60950-1
standard. All other equipment connected to the triggers or other ports
must also have double insulation/reinforced isolation protection from the
mains supply.
The Power Supply Unit (PSU) used to energise the PP8xx must provide
double insulation/reinforced isolation from mains electricity and protected
against short circuits and overloads. We recommend using a PSU that
limits its output current to the appropriate rating of the controller by
design, by setting the current limit on the supply (if possible), or through
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