5 Operation
5.1 Operation of Stand-Alone Model
5.1.1 Manual Operation
With the Stand-Alone model the system can be operated manually with the user panel according to Figure
29. The speed can be set manually with the Down and Up buttons before or after enabling it with the On/Off
button. The Setpoint Speed (= Ref. Speed) is than stored in the system EEPROM and will stay the same,
even if the system is powered off. When disabling the system by shortly pressing the On/Off button the
Actual Speed is first reduced to zero before an impeller touch down is made by disabling the radial levitation.
After an Error (see details in Section 5.1.4) the system can be restarted by the On/Off button or by removing
and reattaching the power supply.
Figure 29: User panel of stand-alone model for manual operation
5.1.2 Operation with PLC
When activating the digital input on the PLC connector the speed can be set with an analog signal (see
Table 8 for hardware details). The Status of the system can be monitored with a digital output signal. During
analog speed control all information is shown on the display.
5.1.3 Extended Menu Functions
By pressing the On/Off button for more than 4 seconds an extended Menu can be reached, which allows
a. Monitoring of system parameters like driver temperature, axial position of rotor, supply
voltage (DC-link voltage), bearing phase currents (BNG) and drive phase currents (DRV).
b. Reading of error, warning and message information and their history.
c. Reading of firmware version.
d. Setting a timer.
In the extended Menu, the menu tabs are browsed using the Up and Down buttons. Items are selected with
the On/Off button, and values are modified using the Up and Down buttons. The Menu can be left by
pressing the On/Off button for more than 2 seconds.
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