“Drain” control mode: 1x well, 2x pumps, 4x float switches or electrodes
ON1 | Switch-on level 1 |
OFF1 | Switch-off level 1 |
ON2 | Switch-on level 2 |
OFF2 | Switch-off level 2 |
DR | Dry-running level |
P1 | Pump 1 |
P2 | Pump 2 |
When the fill level in the well rises and the first switch on-level (ON1) is reached, the first pump switches on. The well is drained. When the water level in the well continues to rise and the second switch on-level (ON2) is reached, the second pump switches on.
When the switch-off levels (OFF1 and OFF2) are reached, the respective pump switches off after the set switch-off delay has elapsed.
To protect the pumps from a dry run, install an additional float switch or electrode in the well:
- If the water level falls below the dry-running level, the pumps switch off. An error message appears on the display and an alarm sounds.
- If the dry-running level is exceeded, the alarm and error message are automatically reset.
1 | Current pump status | 4.1 | DR |
2 | Standby pump activated | 4.2 | OFF1 |
3 | Control mode | 4.3 | ON1 |
4 | Switching status of the float switch/electrode | 4.4 | OFF2 |
6 | Fieldbus active | 4.5 | ON2 |
Overview of terminals
Function | DR | OFF1 | ON1 | - | OFF2 | ON2 | - | - |
Terminal overview symbol |
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Float switch operating principle | ||||||||
Top contact | closed | closed | closed | − | closed | closed | − | closed |
Bottom contact | Open | Open | Open | − | Open | Open | − | Open |
Required menu settings
Menu and value to be set |
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