5.1.2 Standalone Operation (Button Control Mode)
◼ When applying power the system defaults into the ” and goes into the status
according to Figure 34. Levitation is disabled and the display indicates .
◼ Levitation can be enabled by pressing the button during 1 second (display shortly indicates
) or by activating (typically 24V) the pin on the connector (see
Table 10). The system goes then into the status and is running at the speed,
which is stored in the EEPROM.
◼ The speed can be changed by pressing accordingly the and buttons. As long as the
digits on the display are blinking the set speed is shown. As soon as blinking stops the actual speed
is shown and the set-speed is stored in the EEPROM of the controller.
◼ The system can be disabled by pressing the button until 0 rpm is achieved. Pressing further
1 second the button the system disables levitation and shows on the display. The
system can also be disabled by deactivating (0 V) the pin on the
connector (see Table 10). Before disabling the system the speed is automatically reduced to 0 rpm
and the impeller is properly touched down without grinding the wall.
◼ In case of an error the button (see Figure 23) can be used to restart the system or the
power can be switched off and on.
◼ For error analysis the codes described in Table 12 are displayed (blinking between and the
according code number).
◼ If the system shall be enabled automatically, when power is applied the pin on the
connector (see Table 10) has to be active (typically 24V). When switching on the
power the system is running with the stored speed.
◼ For monitoring purposes a digital output on the connector (see Table 10)
indicates the status of the system. When the impeller is rotating the digital output turns
active.
The digital input is normally edge-triggered to allow control by digital input and buttons in order to
enable/disable systems simultaneously. An exception is, when the system is powered up or a system reset
occurs: than the system checks the level of the digital input and switches to the desired state. Hence on
startup a high level of the digital input is sufficient to switch on the system and a transition from
low to high is not required.
5.1.3 Extended Operation (“Analog Control Mode”)
◼ In order to be able to control the pump with external signals (PLC) the mode
has to be set with the display buttons. The and buttons have to be pressed
simultaneously during 5 seconds. The display should feedback the change by blinking between the
stored speed value and . The chosen mode is then stored in the EEPROM of the controller. After
startup the system returns to the operation mode selected previously.
◼ The system and levitation can be enabled/disabled with the digital input on the
connector (see Table 10). When disabling the running system the speed is automatically reduced to
0 rpm and the impeller is properly touched down without grinding the wall. The display is blinking
between and OF. Alternatively button is also able to switch on system, with
button the system can be switched off.
◼ The speed can be set with an analog signal on the connector according to
Table 10. It is strongly recommended to use galvanic separated signal values.
◼ For monitoring purposes a digital output on the connector (see Table
10) indicates the status of the system. When the impeller is rotating the digital output turns
active.
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