Leprecon LP-500 Series - Manual (Page 4)

TRIM
To adjust the trim of any LEPRECON controller you need a volt meter and a small flat
blade screwdriver. The first item that should be done is to determine which pin is
common with your controller.
On the LP 500 series there are two different types of output connectors that are used.
They are a 15 pin cinch jones and a 27 pin cinch jones. On the 15 pin cinch jones, pins
1-12 are channels 1-12. Pin 13 is 28 volts. Pin 15 is used for common and common is
isolated from ground. On the 27 pin CJ, pins 26 and 27 are common and pin 25 is the
28 volt DC supply.
With your volt meter’s negative lead connected to the controller’s common pin and the
positive lead connected to channel number one you then raise all channels to maximum.
With all channels up you adjust the “max” trim to the desired level, factory adjustment is
10 volts.
To adjust the minimum voltage you bring only channel one down, all other channels
must remain at maximum output. With the screwdriver in the “min” pot you turn it
counterclockwise to the near zero position.
Once the trim has been adjusted it does not need to be readjusted unless another brand
of dimmers have been introduced.