PS 1 – LCD
www.lesa.de
– the fastest way to get in touch!
13
Connection of pump:
The connections L1 L2 L3 of the pump are directly attached to the motor contactor. The protective
earth conductor is connected to the remaining PE terminal.
The bimetallic contact, which unlocks the pump after it has cooled down, needs to be connected to
terminal 20/21; the bimetallic contact that unlocks the pump after pressing the “Quittung” button
needs to be connected to terminal 21/22 on the upper circuit board. (In case Temp.1 is not being
connected,
thermal fault 1
needs to be deactivated in the menu).
To operate 1 ~ motors (230V AC)
a bridge between input terminal L1 to L2, as well as between N
an L3 are necessary.
Power supply to the pumps (1~)
The connection of the pumps occurs on contactor T2 = L und T3 = N
ATTENTION!
Because measuring the current needs to happen through T2, the motor needs to be
connected at this terminal.
Thermal motor protection contact
Warning contact
Temp 1 / Terminal 20/21
the pump is unlocked automatically after having cooled off.
Limiting contact
Temp 2 / Terminal 21/22
The pump is unlocked after pushing the button “Quittung”
If Temp.1 is not used, the mode needs to be deactivated in the menu (compare to 4.2).
If Temp. 2 is not used, a wire jumper needs to be put in place between terminal 21 and 22.
For pumps in which the bimetallic contact is connected in a way so it will directly interrupt the
current of the pump, the message “
Pump Off”
will appear once the bimetallic contact triggers. The
pump will only resume operation once the fault report is confirmed (
Quittung).