
04/08
Operating Instructions ACU
91
7.2.9 Selection of an actual value for display
After commissioning, the value of parameter
Actual frequency
241 is displayed at
the control unit KP500.
If another actual value is to be displayed after a restart, make the following settings:
•
Use the arrow keys to select the actual value to be displayed as from now.
•
Use the ENT key to display the value of the parameter.
•
Press the ENT key again. "SEt" is displayed for confirmation.
As from now, the selected actual value is displayed after each restart.
If the parameter settings were made via the optional control software or in the PARA
menu branch of the operating unit, the display of the selected actual value must be
activated manually. Use the ESC key to switch to the selection of the actual value for
display again.
7.3
Check direction of rotation
Warning!
Dangerous voltage may be present at the motor terminals and the
terminals of the brake resistor even after the frequency inverter has
been disconnected from power supply. Wait for some minutes until
the DC link capacitors have discharged before starting to work at the
unit.
•
The unit may only be connected with the power supply switched off.
•
Make sure that the frequency inverter is discharged.
To check if the reference value and the actual direction of rotation of the drive cor-
respond to one another, proceed as follows:
•
Operate the drive at low speed, i.e. specify a reference value of approx. 10%.
•
Switch on release of frequency inverter briefly:
Connect digital inputs S1IND/STOA and S7IND/STOB as well as S2IND (Start
clockwise) or connect S1IND/STOA and S7IND/STOB as well as S3IND (Start an-
ticlockwise).
•
Check if the motor shaft turns in the required direction.
In case the sense of rotation is wrong, exchange two motor phases, e.g. U and
V at the terminals of the frequency inverter. The mains-side connection of the
frequency inverter does not affect the sense of rotation of the drive. In addition
to checking the drive, the corresponding actual values and operating messages
can be read out by means of the operating unit.
Note:
The commissioning of the frequency inverter is complete and can be
complemented by further settings in the PARA menu. The set para-
meters have been selected in such a way that they are sufficient for
commissioning in most applications. The other settings which are
relevant to the application can be checked according to the operating
instructions.
If the controller release of the frequency inverter at S1IND/STOA and S7IND/STOB
is switched off the power output stage will be disabled. The motor will coast down
or, if installed, a break will be activated.
Operating Instructions ACU
91
09/08
Содержание Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series
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