NORDAC SK 750E Manual
76
Technical design subject to change
BU 0750 GB
6.2 Basic operation
–
Condensed instructions
... involving the ControlBox subassembly (option: SK TU2-CTR)
In the paragraphs below we are showing you the easiest way to set up the inverter for operation. In this basic
operation mode the start-off frequency is used (P113). The default settings need not even be changed with the
exception of a single parameter.
Measure
Key
Display
1.
Connect the inverter to mains voltage. The operation display changes to in-
dicating the "equipment-on" status.
2.
Operate
key util the
P 1 _ _
menu group is displayed.
3.
Operate
key to access the basic parameter group of menus.
4.
Operate
key. P101 and subsequent parameters are displayed.
5.
Operate
key until parameter P113 >
start-off frequency
< is displayed.
6.
Operate
key to display the current frequency setpoint (default setting by
manufacturer = 0.0Hz).
7.
Operate
key to set the desired frequency setpoint (e.g. 35.0Hz).
8.
Use the
key to read the setting into memory.
9.
Operate
key until the "equipment-on" signal is shown.
Alternatively, press
and
simultaneously to return directly to the
"equipment-on" signal.
With the
key the inverter is switched on directly. At once the
equipment-on signal will appear in the display.
10.
Switch the frequency inverter on using the
key.
The motor shaft starts rotating, and the display shows that the inverter out-
put frequency is rising towards the 35Hz setpoint.
Note:
The frequency setpoint is reached upon 1.4 seconds (35Hz / 50Hz x 2s).
For the frequency to increase to 50Hz, 2 seconds are normally required
(as defined by P102 and P105).
If required the motor speed (i.e. the frequency actually) can be varied di-
rectly with the
keys. Press the
key to save the new setting in
P113 right away. .
11.
Use the
key to switch the inverter off.
The motor is decelerated to a stop at a controlled rate (this will take 1.4 sec-
onds). Standard ramp-down time is 2s from 50Hz to stop (as defined by P103,
P105).
Note:
After having been switched off, the inverter will supply 0Hz for a 0.5sec
interval (P559, >DC injection time/no after-running<) which is suspended if the
inverter is enabled again immediately.
