Program features 115Settings• Parameter 96.04 Macro select (macro selection)• Parameter group 10 Standard DI, RO (page 150)• Parameter group 40 Process PID set 1 (page 261)• Parameter groups 76 PFC configuration (page 299) and 77 PFC maintenanceand monitoring (page 305). Mechanical brake controlA mechanical brake can be used for holding the motor and driven machinery at zerospeed when the drive is stopped, or not powered. The brake control logic observesthe settings of parameter group 44 Mechanical brake control as well as severalexternal signals, and moves between the states presented in the diagram on page116. The tables below the state diagram detail the states and transitions. The timingdiagram on page 117 shows an example of a close-open-close sequence.Inputs of the brake control logicThe start command of the drive (bit 5 of 06.16 Drive status word 1) is the main controlsource of the brake control logic.Outputs of the brake control logicThe mechanical brake is to be controlled by bit 0 of parameter 44.01 Brake controlstatus. This bit should be selected as the source of a relay output (or a digitalinput/output in output mode) which is then wired to the brake actuator through a relay.See the wiring example on page 118.The brake control logic, in various states, will request the drive control logic to holdthe motor or ramp down the speed. These requests are visible in parameter 44.01Brake control status.SettingsParameter group 44 Mechanical brake control (page 275).
