Combined mode

The control input of the main pump and the control input of the partner pump are respectively occupied with a control cable and configured to EXT. OFF. The control input of the main pump switches both dual-pump partners off. The control input of the partner pump only switches the partner pump off. If the main pump malfunctions or if the twin-head pump connection is disconnected, the control input of the partner pump is assessed.

Combined mode
	Main pump			Partner pump
States	EXT. OFF	Behaviour of the pump motor	Display text for active influences	EXT. OFF	Behaviour of the pump motor	Display text for active influences
1	Active	Off	OFF Override OFF (DI1/2)	Active	Off	OFF Override OFF (DI1/2)
2	Not active	On	OK; normal operation	Active	Off	OFF Override OFF (DI1/2)
3	Active	Off	OFF Override OFF (DI1/2)	Not active	Off	OFF Override OFF (DI1/2)
4	Not active	On	OK; normal operation	Not active	On	OK; normal operation