Modulator system and method for operating same

A method for operating a modulator system for a brake system of a trailer vehicle, the modulator system including a pneumatic brake installation having a first modulator device including a primary modulator and a first electronic control device;

• the primary modulator having a control pressure input for control pressure, a primary supply pressure input for supply pressure, a primary brake pressure outlet, and a primary electrical input for electrical signals from the first electronic control device;
• the first electronic control device having an input for wheel speed signals and an output for connecting to said primary electrical input of the primary modulator;
• the primary modulator being configured to be controlled by the first electronic control device;
• the pneumatic brake installation having a second modulator device including a secondary modulator and a second electronic control device;
• the secondary modulator having a secondary supply pressure input for supply pressure, a secondary control pressure output for control pressure, and a secondary electrical input for electrical signals from the second electronic control device;
• the second electronic control device having an interface for receiving the electrical signals from the first electronic control device, a second wheel speed signal input for wheel speed signals and a second output for connecting to the secondary electrical input of the secondary modulator;
• the secondary modulator being configured to be controlled by the second electronic control device for outputting control pressure;
• and, the secondary control pressure output for control pressure of the secondary modulator being connected to the control pressure input for control pressure of the primary modulator, the method comprising:
• receiving at the second electronic control device status information from the first electronic control device;
• and,
• in dependence on the received status information, the second electronic control device taking over the control of brake functions.

A method for operating a modulator system for a brake system of a trailer vehicle, the modulator system including a pneumatic brake installation having a first modulator device including a primary modulator and a first electronic control device;

• the primary modulator having a control pressure input for control pressure, a primary supply pressure input for supply pressure, a primary brake pressure outlet, and a primary electrical input for electrical signals from the first electronic control device;
• the first electronic control device having an input for wheel speed signals and an output for connecting to said primary electrical input of the primary modulator;
• the primary modulator being configured to be controlled by the first electronic control device;
• the pneumatic brake installation having a second modulator device including a secondary modulator and a second electronic control device;
• the secondary modulator having a secondary supply pressure input for supply pressure, a secondary control pressure output for control pressure, and a secondary electrical input for electrical signals from the second electronic control device;
• the second electronic control device having an interface for receiving the electrical signals from the first electronic control device, a second wheel speed signal input for wheel speed signals and a second output for connecting to the secondary electrical input of the secondary modulator;
• the secondary modulator being configured to be controlled by the second electronic control device for outputting control pressure;
• and, the secondary control pressure output for control pressure of the secondary modulator being connected to the control pressure input for control pressure of the primary modulator, the method comprising:
• receiving at the electronic vehicle control device status information from at least one of the first electronic control device and the second electronic control device;
• and,
• in dependence on the received status information, prioritizing via the electronic vehicle control device the first electronic control device or the second electronic control device for controlling the brake functions.