Electronically controllable braking system and method for controlling the electronically controllable braking system

An electronically controllable brake system, in particular electronically controllable pneumatic brake system, for a vehicle, in particular utility vehicle, comprising:

• at least one service brake circuit with service brakes and a service brake control module, a service-brake brake pressure being feedable to the service brakes, the service-brake control module being configured to generate a service-brake control signal as a function of a braking specification, the service-brake brake pressure being generatable as a function of the service-brake control signal and specified to the service brakes, for implementation of the braking specification via the at least one service brake circuit, under electrical control by the service-brake control module;
• a parking brake circuit with spring-loaded brakes, a parking-brake brake pressure being feedable to the spring-loaded brakes, the parking-brake brake pressure being generatable as a function of the braking specification and specified to the spring-loaded brakes, in order to implement the braking specification via the parking brake circuit;
• an inverter control valve with an inverter output and/or a redundancy output, the inverter control valve being configured to generate an inverter control pressure and to output the inverter control pressure via the inverter output and/or the redundancy output, the inverter control pressure being inversely proportional to the parking-brake brake pressure and/or a parking-brake control pressure which specifies the parking-brake brake pressure, which parking-brake brake pressure and parking-brake control pressure are applyable in order to implement the braking specification in the parking brake circuit via the spring-loaded brakes;
• and
• a switching valve, the switching valve having two switching-valve switched positions, such that when a service-brake specification which is requested manually by a driver via a service brake valve is present, the switching valve is set to a first switching-valve switched position in which switched position the service-brake brake pressure is specifiable as a function of the service-brake braking specification which is specified via the service brake valve, and otherwise the switching valve being set a second switching-valve switched position in which the service-brake brake pressure is specifiable as a function of the inverter control pressure which is specified by the inverter control valve.