“Drain” control mode: 1x well, 2x pumps, 2x float switches or electrodes
ON/OFF1 | Switch-on/switch-off level 1 |
ON/OFF2 | Switch-on/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 (ON/OFF1) 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 (ON/OFF2) is reached, the second pump switches on.
When the switch-off levels (ON/OFF1 and ON/OFF2) are reached, the pumps switch off after the set switch-off delay has elapsed. The switching cycle is defined by the cable length of the respective float switch.
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 | ON/OFF1 |
3 | Control mode | 4.3 | ON/OFF2 |
4 | Switching status of the float switch/electrode | ||
6 | Fieldbus active |
Overview of terminals
Function | DR | - | ON/OFF1 | - | - | ON/OFF2 | - | - |
Terminal overview symbol |
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Float switch operating principle | ||||||||
Top contact | closed | − | closed | − | − | closed | − | closed |
Bottom contact | Open | − | Open | − | − | Open | − | Open |
Required menu settings
Menu and value to be set |
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