The present disclosure is directed towards a control unit (12) for an electronically controlled pump unit (11), the control unit (12) being designed to control the pump unit (11) to infuse insulin into a diabetic's body in a substantially continuous way according to a preset infusion schedule as a function of time. The control unit (12) includes an intervention unit (124), the intervention unit (124) being designed to continuously evaluate a blood-glucose indicative input for detecting an actual or expected hypoglycaemia and to execute, in response to an actual or expected hypoglycaemia, a temporary hypoglycaemia intervention, the hypoglycaemia intervention including, for an intervention time interval, overriding the preset infusion schedule by temporarily suspending insulin infusion or temporarily reducing insulin infusion below the preset infusion schedule.The intervention unit (124) is designed to adopt its way of operation with respect to executing the hypoglycaemia intervention in accordance with a control signal the control signal being separate from the blood-glucose indicative input. The control unit is designed to automatically generate the control signal as a function of time and/or based on sensor input.
