Schrack Technik CX plus Series FRACXP06R-, Руководство пользователя

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9
Commissioning
The CX plus is pre-programmed with default values, which enable an operation almost without
further settings, if connected to a 400 V supply network according to the wiring diagram.
The measurement values of current and power are only displayed, if the current transformer
factor has been set.
NOTE: If the connection of measuring voltage and current results in a phase between voltage
and current not equal to 0° resp. 90°, execute the Automatic Initialisation (AI) first or manually
set the phase correction angle (setup menu: 206) correctly. A table with the phase correction
angles, in dependence of the connection, can be found in the Annex Setting of phase
correction angles.
NOTE: The
“Automatic Initialisation” only identifies the correct phase between measuring
voltage and current. Furthermore, the AI determines which switching outputs are occupied and
which not. Switching outputs which are not occupied are set to the stage type
“FOFF”. The
stage sizes are determined at first by the control in normal control mode.
After applying the mains voltage, the message
“AUTO”
appears on the display and the
currently measured COS

is displayed, if measuring voltage and current are within the
tolerance. Normally, the COS

should be inductive (display of a small i behind the first line).
From this moment on, the discharge time lock of the capacitors is active (factory setting: 75
sec.). After the discharge time lock, the CX plus starts controlling. In the process, the stage
sizes are determined automatically. Stage outputs which are not occupied are set to the stage
type
“FOFF” (Fix-Off), if the first three switching processes have been unsuccessful. I.e. the
control ignores these stages.
! CAUTION
Exception: The current transformer factor (SETUP/Ct) must be entered in order to correctly calculate
the measurement values and to correctly identify the stage sizes.