Electropneumatic service brake device for a vehicle

An electropneumatic service brake device (1) for a vehicle configured for trailer operations, the service brake device comprising:

• at least one pneumatic service brake cylinder (BZ1), loadable with a first service brake pressure (p1), and at least one second pneumatic service brake cylinder (BZ2), loadable with a second service brake pressure (p2);
• a foot brake actuation device (5);
• a pneumatic foot brake valve device (FBV, FBM), including a first pneumatic channel (6), provided and configured to generate a first control pressure (Stp1) as a function of an actuation of the foot brake actuation device (5), and a second pneumatic channel (8), provided and configured to generate a second control pressure (Stp2) as a function of an actuation of the foot brake actuation device (5);
• an electrical brake request signal generator (10, 11), provided and configured to generate an electrical brake request signal as a function of an actuation of the foot brake actuation device (5);
• an electronic service brake control (EBS-ECU), provided and configured to generate an electrical control signal as a function of the electrical brake request signal, wherein the electrical control signal represents a nominal service brake pressure;
• a first electropneumatic solenoid valve device (2C-EVO), provided with compressed air from a first compressed air storage (13) and provided and configured to be electrically controllable by the electrical control signal, or pneumatically controllable by the first control pressure (Stp1) to control a first service brake pressure (p1) for the at least one first pneumatic brake cylinder (BZ1) at least at a first output connection (15), wherein the first service brake pressure (p1) is modulated in particular by a first pressure control valve (PCV1);
• a second electropneumatic solenoid valve device (FAM), provided with compressed air from a second compressed air storage (17) and controlled by the electronic service brake control (EBS-ECU) and configured to generate the second service brake pressure (p2) for the at least one second service brake cylinder (BZ2) at a second output connection (19);
• and
• at least one second pressure control valve (PCV2), controllable by the electronic service brake control (EBS-ECU) to modulate the second service brake pressure (p2) for the at least one second service brake cylinder (BZ2),
• wherein the second electropneumatic solenoid valve device (FAM) is configured and controlled by the electronic service brake control (EBS-ECU), so that the second service brake pressure (p2) for the at least one second service brake cylinder (BZ2)
• is generated in a first operating mode as a first option as a function of the first service brake pressure (p1), or as a second option as a function of the second control pressure (Stp2), wherein the first option and the second option are both available concurrently, or
• is provided in a second operating mode by the second supply pressure provided in the second compressed air storage (17).