Application Types; Automatic Operation - Grundfos LC 231 Manual Del Usuario

• manual and automatic control of the pump
• Bluetooth pairing with Grundfos GO Remote
• operating indication, such as power on and pump
running
• alarm and warning indication, such as power
phase missing and high-water level
• motor and phase failure protection
• setting of stop delays matching the actual
operating conditions.

4.4 Application types

You can choose between two application types:
• Empty
• Fill
You can set the application type with Grundfos GO
Remote.
Empty
Pos. Description
1 High level
2 Not in use
3 Start level P1: start level for pump 1
4 Stop level
5 Dry-running level
The pump will start to empty the tank or pit
when Start level P1 is reached.
The pump stops when the liquid level is lowered
to Stop level.
If the inflow of liquid exceeds the capacity of the
installed pump, the level in the tank or pit will rise.
Eventually, the High level sensor will register a high
liquid level in the tank or pit. If set, the signal from
the High level sensor can be used to activate an
12
output relay which can then be used to indicate a
visual or acoustic alarm or send a signal to a SCADA
system.
If the pump is running and the liquid level in the tank
or pit falls below the dry-running level, the dry-running
protection will stop the pump to ensure that it is not
damaged mechanically.
Fill
Designation Description
1 High level
1
2 Stop level
2
3 Start level P1: start level for pump 1
3
4 Not in use
4
5
5 Dry-running level
In the filling application, the pump is installed in a tank
or well from where it pumps the liquid. The liquid is
pumped into a second tank where the level sensors
are installed.
The pump will start to fill the second tank when Start
level P1 is reached.
The pump stops when the liquid level reaches Stop
level.
If the pump for some reason does not stop at Stop
level and the liquid level keeps rising, the High
level sensor will eventually register this. If set, the
signal from the High level sensor can be used to
activate a relay output which can then be used to
indicate a visual or acoustic alarm or send a signal to
a SCADA system via a communication interface.
If the pump is running and the liquid level in the tank
falls below the dry-running level, the dry-running
protection will stop the pump to ensure that it is not
damaged.
Related information
6.1 Setting the application type with Grundfos GO
Remote
6.14.1 Automatic operation
1
2
3
4
5