Document ID: chunk:federal_register_of_legislation:F2025C00113:front:0:p21
Version: federal_register_of_legislation:F2025C00113
Segment Type: other
Provision Reference: 
Character Range: 59431–62558

of the applied signal and must be applied to the 'Control System' such that it rises from zero to 65 per cent of the final value in not more than 0.22 second.  In the case of air 'Brake System's' the input 'Control Signal' strength (kPa) will be measured at the trailer 'Control Line' coupling.
         3.                           The output signal strength must be the final value of the signal generated for control of the 'Brakes' actuator and which must be reached in not more than two seconds.  The output signal strength will be measured in the actuator attached to each output having a fundamentally different relation to the input.  In the case of air 'Brake Systems' a 'Control Signal' path having additional pressure limiters, relay valves or other active devices will be considered as being fundamentally different.
         4.                           Response and release times must be measured where necessary in accordance with clause 16.
         5.                           Where the 'Control System' is not installed on an actual trailer, it must be installed in an essentially identical manner, in the laboratory, with all bends, fittings and worst case line lengths and representative actuator volumes installed.
         6.                           For the response test (refer clauses 16.4 and 16.5), the actuator displacement must be the largest volume for which the 'Control System' is designed.  Alternatively, the actuators may be replaced by an equivalent fixed volume.
         7.                           For the release test (refer clause 16.4.7 – where applicable), the initial actuator displacement must be the largest volume for which the 'Control System' is designed.  Alternatively, the actuators may be replaced by an equivalent fixed volume.
         8.                           All relevant test conditions pertaining to clause 10 must be complied with.
         9.                           The relationship between brake actuator volume and stroke must be measured and plotted from zero to full actuator stroke.
             1.                     If the relationship between stroke and volume is not linear, all critical points must be measured and plotted.
             2.                     The value of the maximum brake actuator design stroke and volume must be stated.
     3.                                 'Foundation Brakes'
         1.                           The effectiveness of the 'Foundation Brakes' must be characterised by comparing the energy level of the signal provided to the 'Brakes' actuator against the output brake torque of the 'Brakes' device at not less than five points in the range 0.2 'E' to 1.0 'E'. These points must be equally spaced.  Where a test was not conducted at 1.0 'E', the torque from a test conducted at 0.8 'E' or greater may be increased pro-rata to derive output torque at 1.0 'E'.
         2.                           Parameters relevant to the specification of the 'Brakes' actuator including its stroke at each energy level of the signal provided to the 'Brakes' actuator must be recorded. In the case of 'S-Cam' air systems