MultiControl Mono
Ver. 1.1
30
Rotating field fault
The rotating field monitoring monitors both the phase sequence and the absence of a phase. In the event of a
phase error, the pumps are blocked, an alarm is issued and the message “Rotating field fault” appears in the
display. The rotating field monitoring can be activated and disabled in the menu.
The rotating field monitoring must be switched off when operating 1 ~ motors.
ATEX mode
For pumps that are used in areas with a potentially explosive atmosphere, the ATEX mode must be activated
in the menu. The ATEX mode prevents the pumps being switched on via the manual function, forced
activation or a remote control system while the level is below the tripping point. If the pumps are started up via
the overrun time or manual function while the level is still below the tripping point, the pump can drain off fluid
below the tripping point. The manual mode is automatically interrupted after 2 minutes. If the ATEX function
prevents an activation of the pumps, the message “ATEX: Level below tripping point” appears in the display.
Service mode
Service mode is activated on delivery, i.e. all settings can be changed. If Service mode is deactivated in the
menu, the settings can only be retrieved with the digital potentiometer.
While Service mode is deactivated, no settings apart from the language can be changed.
Level control
It is possible to select whether the control system is operated via the internal level sensor (ram pressure, air
bubbles) or an external 4 - 20 mA level sensor or float switch.
The input for the overflow alarm (terminal 16/17) is always active and can be used as a redundant monitoring
system. As soon as terminal 16/17 is closed, the overflow alarm is triggered and the pump is activated.
Components with the relevant approvals must be used when using external 4 - 20 mA level probes and float
switches that are installed in areas subject to potentially explosive atmospheres.
20 mA => level
This setting is used to compare the switch points and the level displayed on a connected external
4 – 20 mA level probe. The processor converts the input signal so that the correct level is displayed.
If the measuring range for the 4 - 20 mA probe is changed in the Settings menu, the switch points must then
be reset, as these will have been changed due to the way the system operates. The correct sequence is
therefore: always set the measuring range of the probe first, then the switch points.
The corresponding specifications must be observed for use in areas with a potentially explosive atmosphere,
i.e. a 4 - 20 mA probe with the relevant approval and a suitable explosion barrier must be used. If the switch
points are outside of the set range for the level probe, the following message is issued:
“Check the switch points”.
Language
The languages included in the scope of delivery are
German/English/French/Spanish/Portuguese/Dutch/Polish/Czech. The language can be toggled even if
Service mode is deactivated.
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