Dimensionamiento fotovoltaico

Abnormal – This means a condition that is not normal. The presence of an abnormal condition or an abnormal signal indicates the existence of a problem. A warning is activated in order to alert the operator. Alert Indicator – An alert indicator is a red indicator lamp that is located on the top portion of the main display module. The alert indicator notifies the operator of an abnormal condition.

+Battery – This pertains to any of the harness wiring which is part of the circuit that connects to the positive battery post. +Battery voltage is also referred to as system voltage.

Caterpillar Electronic Technician (ET) – This is a Windows based program, that is used to service Caterpillar products. The software operates on a service tool (personal computer).

Component Identifier (CID) – The CID is a diagnostic code that informs the operator of component or the system that has failed. The CID is a four digit code, that is located in the digital display area when the main display module is in service mode.

Clear – This is the removal of diagnostic information that is stored in the memory of the ECM. Before a failure is cleared, the failure must be on hold and the failure must not be present.

Connector Contact – A connector contact is the component of a harness connector that actually makes the electrical connection. Connector contacts are either pins or sockets.

Detected Diagnostic Code – A detected diagnostic code is a problem that has been found by the main display module. A service code that has been recorded for the problem and the diagnostic information is available when the main display module is in service mode.

Diagnostic – This is a process that takes place within an electronic control. The control senses the abnormal machine information. The control displays the abnormal machine information. The control stores the abnormal machine information. This stored information can aid the service technician.

Display – Display refers to the gauges, indicators, or readouts within the Caterpillar Monitoring System display area.

Failure Mode Identifier (FMI) – An FMI is a diagnostic code that identifies the type of failure that has occurred. The FMI consists of two digit code which is preceded by a decimal point “.”. This code is shown on the display area when the main display module is in service mode.

Diagnostic Code – A diagnostic code is a failure of a component in an electronic system. An associated CID FMI identifies the type of problem.

Diagnostic Event – This is a type of maintenance event. This event is displayed when an electronic control detects an abnormal condition in the electrical system. Sometimes abnormal conditions in the mechanical system can be detected through the electrical system.

Gauge – This is a display device that is typically circular in shape with an indicator needle. The gauge can be a mechanical device or the gauge can be a solid state device.

Ground (B-) – This is the reference point for the electrical system. On CAT products, ground is the machine frame or the engine. This is the connection point for the negative side of the battery.

Floating – This describes the end of a circuit that is open. The circuit is not connected to any other component.

Hard Wired – Hard wired refers to an electrical connection that is made within the harness. The connections are permanent. These soldered

connections or crimped connections are not meant to be altered.

Harness – This is an assembly or a bundle of two or more wires that electrically connects system components. Typically, the harness is held together by a loom.

Harness Code – This refers to the grounded condition or the open circuit condition of the inputs for the harness code . The harness code provides the characteristics of the machine such as engine oil pressure, maximum engine speed, etc. The monitoring system uses this hard wired code in order to determine the module identifier (MID) that is used for data link communications.

Hertz (Hz) – This is a measure of frequency. The units are cycles per second.

Hysteresis – This is a measure of the “lag time that occurs between the turn ON and turn OFF values of a switch or a sensor”. As an example, the warning lamp may turn on at 40 psi with decreasing pressure and the warning lamp may turn off at 45 psi with increasing pressure. The hysteresis is 5 psi.

Indicator – An indicator is any of the items within the Caterpillar Monitoring System display area which operate in an ON, FLASHING or OFF manner in order to bring attention to a machine condition. Jumper – A jumper is a piece of wire that is used to make an electrical connection during troubleshooting. Key Start Switch – This is an automotive type key start that provides engine cranking/starting . Lamp – This is a component of the machine electrical system that emits light by converting electrical energy into light.

Light Emitting Diode (LED) – This is a solid state device. The device emits light that is visible to the human eye when an electrical current is passed through the device. The LED is used as a lamp in electronic controls because the device is very reliable.

Liquid Crystal Display (LCD) – This is a type of solid state display that uses a liquid crystalline material. The material is sealed between two glass sheets. An electrical signal causes segments of the crystal material to be visible to the eye.

Machine Service Connector – This is a harness connector for the machine or for engine electrical systems. The harness connector will allow the connection of a service tool for diagnostics. Module Identifier (MID) – An MID is a diagnostic code that identifies the electronic control module which diagnosed the diagnostic code. The two-digit code is displayed in the display area when the machine is in the service mode.

Open Circuit – This is a condition that exists when an electrical circuit is broken.

Pressure Sensor – This is a device that generates a signal that is proportional to the pressure that is sensed.

Problem – This refers to the presence of an abnormal machine condition. When a problem exists, warning operation is activated and the main display module notifies the operator.

Pounds per square inch (psi) – This is an English unit of pressure measurement. The measurement represents the force that is applied to one square inch. The value is measured in pounds. 6.89 kPa (1 psi)

Pull up Voltage – This is the voltage that is measured on the input of an electronic control. The measurement is taken when an input device (sensor or switch) has been disconnected.

Pulse Width Modulation (PWM) – The PWM is a signal that consists of variable pulse widths at fixed intervals. The duty cycle can be varied. The frequency of a PWM signal is constant. The Caterpillar Monitoring System has sensors which provide a PWM signal to the main display module. Scroll – When you scroll through information in the display area, all available sets of diagnostic information are shown by one set at a time. A set of diagnostic information is shown briefly. Then, the display automatically advances to the next set. After all sets have been shown, the sets are repeated. Sender – This is a device that changes resistance according to a physical condition. The sender then sends a signal to a gauge. A single connection provides the signal and the power.

Sensor – This is a device that monitors the physical condition of a machine system. The sensors can monitor the conditions that are listed here: pressure, temperature, flow, and mechanical movement. The sensors convert the condition into an electrical signal that can be understood by an electronic control. Service Code – This is a type of maintenance code that describes a condition that has been identified by an electronic control system. The code indicates when service is required. This code is stored in the control for the service technician. This term was previously referred to as a fault code. This code is now referred to as a service type of maintenance event.

Service Tool – This is a tool that is used in order to service Caterpillar machines. This term most often refers to the service equipment that is listed here: Electronic Control Analyzer Programmer (ECAP), Caterpillar Electronic Technician (ET), a digital multimeter, and laptop computer This may also refer to any other dedicated service equipment.

Short Circuit – A connection between two points in a circuit that is normally unwanted.

Show – This pertains to information that is within the Caterpillar Monitoring System display area that is viewed by the operator or a service person.

Signal – This is the changing voltage that is used to carry information. A signal is typically sent from a sensor to an electronic control. For example, a signal is sent from the transmission output speed sensor (TOS) to the transmission control.

Signal Wire – This is the harness wire that carries the signal voltage to the electronic control. The signal is sent by any of the components that are listed here: a sensor, a switch, and any other similar components.

Speedometer/Tachometer Module – This is a display module that contains the components that are listed here: a speedometer for machine ground speed, a tachometer for engine speed, and a display for actual gear.

Switch Input – This is an input to an ECM. This input may be ground. The input may be open. The input may be positive voltage (+battery).

System Voltage – System voltage is the actual voltage that exists between the positive battery post and the frame ground. The system voltage is referred to as the + battery.

Temperature Sensor – This is a device that generates a signal that is proportional to the change in temperature.

Uncommitted Switch Input – Uncommitted switch inputs are switch inputs that function according to the application. Information from the uncommitted switch inputs is typically used to operate the alert indicators. Undetected Problem – This is a problem that is not detected by the main display module, but the problem is found by the operator or by a service technician. The many diagnostic functions of the main display module assist with the troubleshooting of undetected problems.

+V – This pertains to a constant voltage that is supplied to a component. +V is provided by an electronic control module or the battery.

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Connector Contact Description