PS 1 – LCD
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10
NEW!
Fault memory
The last 4 errors that occurred remain safe even with no power and can be called up in the menu
under "Last fault".
Caution
Last fault 1 is the last fault the occurred. If the last fault 1 is called up in the menu, the last
fault can be deleted from the memory with the acknowledgement button.
NEW!
Rotating field fault
The rotating field monitor monitors the phase sequence as well as the absence of a phase. In case
of a phase malfunction the pumps are locked, an alarm is triggered, and the display shows the
message “Rotating field fault”. The rotating field monitor can be activated and deactivated in the
menu. When operating single phase motors the rotating field monitor has to be deactivated.
Atex – Mode
For application of pumps in the Ex – area the Atex- mode needs to be activated in the menu. The
Atex-mode prevents an activation of the pump through the manual mode, the forced activation, or
the remote control system as long as the stop level has not been reached. If the pumps are
activated over the stop delay mode or manual mode while the stop level is exceeded, it is possible to
pump out in order to reach a level below the stop level. After 2 minutes, the manual mode is
automatically deactivated. If the Atex-mode prevents the pump from being activated, the display
will show the message “ATEX: Level less than stop level”.
Service – Mode
ATTENTION!
In the condition supplied at delivery the service mode is activated, meaning all
settings can be adjusted. Deactivating the service mode in the menu leads to only being able to
check values over the digital potentiometer. While the service mode is deactivated no setting (with
the exception of “language”) can be adjusted.
Level Control
There is a choice whether the control unit is operated by the internal level sensor (impact pressure,
air supply), an external level sensor 4-20 mA, or a floating switch.
ATTENTION!
The terminal for the high-water alarm (terminal 16/17) always remains active and may
be used as a redundant monitor. As soon as terminals 16/17 are connected, high-water alarm will be
triggered and the pump is activated.
When utilizing external 4-20 mA level sensors and floating switches that are mounted in the Ex-
area, components with according approvals need to be used as well.
20 mA =>Level
This setting causes the control settings and the level display to be aligned with a connected external
4-20 mA level sensor. The processor re-calculates the incoming signal so the correct level is
displayed.
ATTENTION!
If the effective range of the 4-20 mA level sensor has been changed in the menu, the
level settings need to be re-adjusted as well because they will have changed with the system.
Therefore, the right order would be to first change the effective range of the Level sensor and to
adjust the level settings afterwards. For operation in the Ex-zone according regulations have to be
obeyed. This means the 4-20 mA level sensor needs to have the according approval and a matching
Ex-barrier needs to be used.If the control settings lie outside the set range of the level sensor, the
message “Please check control settings” will be displayed.
