3 Optional equiment
BU 0750 GB Technical design subject to change 29
3.2.2 ControlBox
(SK TU2-CTR, part no.: 275130130)
(SK TU2-CTR-C, part no.: 275170130)
This optional module was designed as a tool for convenient parameterization
and control of the SK 750E frequency inverter and for reading out current op-
erating information.
Features:
4-digit, 7-segment LED display
enables direct control a frequency inverter
will read out the active parameter set and current operating values
When the ControlBox has been assembled and the inverter has been connected to mains voltage, horizontal
dashes appear in the four-digit 7-segment display. This is the way the frequency inverter signals readiness for
operation.
If a start-off frequency has been preset in parameter P113, the display alternates between 0.0Hz and the set-
ting made in P113.
When the frequency inverter is enabled, the display changes automatically to the operating value selected in
parameter P001 >Selection of operating value to be displayed< (factory setting = actual frequency).
The two LED's to the left of the display will show the parameter set currently being used in binary notation.
The digital frequency setpoint is preset at 0Hz at the factory. In order to check whether the drive is
working, either a frequency setpoint should be entered by operating the button, or a start-off
frequency be entered in the applicable >Start-off frequency< parameter (P113).
Only properly qualified personnel should be allowed to perform settings, while strictly complying
with the warning and safety instructions.
WARNING: Pressing the START button may cause the drive to start up immediately!
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