Page 12
04/03/2020
R02.1
4.1
Internal Trimmers
Trimmers U
min
and U
max
can be used to scale the set-point range of the controller so
that it matches the output characteristics of a particular feeder. The U
max
trimmer de-
termines the 100% value of the output voltage and the U
min
trimmer limits the lower
setting of the set-point potentiometer. Because the U
max
trimmer setting can influence
the U
min
setting, when adjustments are made the U
max
trimmer should be adjusted
first, followed by the U
min
trimmer. The trimmers are factory set so that U
min
is approx-
imately 40V and U
max
is approximately 220V (at 115V Units: U
min
20 V, U
max
105 V)
4.2
Setpoint source
Selection: Setpoint Potentiometer or Setpoint external (control current 0...20 mA)
4.3
Half- and full wave
The correct setting of the vibrating frequency is particularly important because the
wrong frequency could cause the magnet to be overloaded. This setting is made with
an internal slider switch. The mechanical frequency of the feed system must be
checked before a setting is made.
4.4
Soft start
The soft-start ramp time for the output voltage is adjusted with trimmer RT3 (0...4
sec).
4.5
Invert enable:
Change the logic function of the enable input.
5
Maintenance instructions
5.1
Replacing the fuse
Procedure:
1.
Always pull the plug out before opening the controller.
2.
Unscrew the housing cover screws.
3.
Replace the defective fuse.
4.
Close the housing again.