RTxxx LED lighting controllers - User Manual
Should spare parts be required these can be obtained from Würth
(www.we-online.com), Farnell (www.farnell.com), or Newark
(www.newark.com). See the table overleaf for further information.
Connector
Description
Würth part
number
Farnell/Newark
part number
Power input
2W screw terminal
free socket
691-351-500-002
164 1952
Trigger input
4W screw terminal
free socket
691-361-100-004
184 1351
12V output
2W screw terminal
free plug
691-348-500-002
N/A
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RTxxx LED lighting controllers - User Manual
7
General description
The RTxxx series of current controllers provide repeatable intensity
control of LED lighting for machine vision applications. This includes the
intensity control, timing and triggering functions required for machine
vision systems.
LED lighting needs a constant current supply as small variations in voltage
can cause large variations in light output. The RTxxx series of controllers
can set currents in steps of 0.1% (with a lower limit of 2.5mA steps) to give
very fine control of intensity.
Several modes of operation are separately available for each channel:
Continuous
In continuous mode the output is a continuous brightness.
Pulse (Strobe)
In pulse mode output is pulsed once per trigger. One trigger input is used
as a trigger. The delay from trigger to pulse, the pulse duration and the
brightness can be set.
Switched
In switched mode a trigger input is used to switch the output current on
and off. The output is only enabled when the trigger input has a voltage
on it.
Selected
In selected mode a trigger input is used to select between two
different intensities.
Tandem
It is possible to connect, in parallel, between two and four channels to
provide additional power for lighting. The operation of tandem mode is
beyond the scope of this users’ manual and further information is available
from your local distributor or Gardasoft Vision.
With the exception of the RT200, controllers in the RTxx series are set up
using an Ethernet port or serial port. The set up is non-volatile, so the
RTxxx resumes the same operation after a power cycle.
7.1
Output modes
The trigger inputs are used as described overleaf:
Note:
The P flag inverts the sense of the trigger input, see
Section 6.3,
Trigger inputs
.
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