sensors 20 and 22 are conventional current transducers a first motor temperature sensor 24 is attached to the motor frame to measure temperature in the motor and a first pump temperature sensor 25 is attached to the pump frame to measure temperature in the pump in motor pump 4 likewise a second motor temperature sensor 26 is attached to the motor frame to measure temperature in the motor and a second pump temperature sensor 27 is attached to the pump frame to measure temperature in the pump in motor pump 6 first and second bearing temperature sensors 28 and 30 measure the motor bearing temperature in each motor in the motor pumps 4 and 6 respectively the temperature sensors 24 25 26 27 28 and 30 are conventional thermocouples a first motor downstream pressure sensor 32 measures pressure in the fluid line 1 downstream from the motor pump 4 similarly the second downstream pressure sensor 34 measures pressure in the fluid line 1 downstream from the motor pump 6 the sensors 32 and 34 are for example conventional pressure sensors unloader valve sensors 35 confirm movement of the unloader valves 9 during loading and unloading of the system the unloader valve sensors 35 are conventional pressure switches and confirm movement of the unloader valves towards increasing pressure during loading and towards decreasing pressure during unloading a system pressure sensor 36 measures pressure in the fluid line 1 downstream from the electrohydraulic reservoir control.