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| Illustration 1 | g01106961 |
ECM Display (1) Display (2) Diagnostic code present indicator (red). (3) Calibration mode indicator (amber) (4) Power indicator (green) | |
The ECM has four possible modes of operation. Each mode of operation enables the operator or technician to access diagnostic information that is stored in the ECM. The operator or technician will use the ECM three digit display (1) in order to view, scroll and clear operator error codes or diagnostic codes. The operator or technician can also access calibration submodes when performing machine system calibrations. On machines that are equipped with the Burner Electronic Control System, mode 3 is used to access the error codes and diagnostic codes for the burner system. The ECM modes and their functions are listed below.
- Mode 0 - Normal Mode
- Mode 1 - Service Mode
- Mode 2 - Calibration Mode
- Mode 3 - Burner Service Mode (only if equipped with Burner Electronic Control System).
Normal Mode 0
When the key switch is turned to the ON position, the ECM display (1) momentarily shows self test information and then enters the Normal Mode 0. This mode displays any operator errors that are active in the conveyor system. Operator errors are shown in the ECM display with the first digit as the letter "P" followed by the error code. If no operator errors are present, "P--" is displayed. The display will toggle between the error codes if more than one is active. If a diagnostic code becomes active while in the normal mode, the conveyor diagnostic code present lamp on the operator panel will turn ON in order to alert the operator or technician.
Service Mode 1
When the ECM detects an abnormal condition for a component in the conveyor system, a diagnostic code for that component will become active. The diagnostic code is used to specify which component in the conveyor system is causing the problem. The diagnostic code consists of two identifiers which are the CID and the FMI. The identifiers are alternately shown on the readout. The CID is shown first for one second and then the FMI is shown for one second. The active codes can be viewed, scrolled and cleared while in mode 1.
Component Identifier (CID)
The CID indicates which component in the conveyor system is causing the problem. The CID is a three digit code shown on the readout. For a complete list of CID codes for the Conveyor Electronic Control System, refer to the Troubleshooting, "Diagnostic Code List" module in this manual.
Failure Mode Identifier (FMI)
The FMI identifier indicates what condition for the involved component has occurred. The FMI is a two digit code preceded by the letter "F". When a diagnostic code is active, an FMI identifier code will always be displayed with the CID identifier.
The diagnostic code present indicator (1) on the right side of the display shows the status of the diagnostic code that is presently being shown on the readout. Indicator ON means the diagnostic code is present (active) at this time. Indicator OFF means the diagnostic code has occurred, however, it is NOT present (inactive) at this time.
Upon entering service mode; the CID FMI code for the first active code is shown. At this time, the diagnostic code that is displayed is "on hold". When a service code is "on hold", the diagnostic code is shown continuously with the readout alternately showing the CID and then the FMI. This is maintained as long as the display mode switch remains in the HOLD position. Troubleshooting and clearing may be performed while the diagnostic code is displayed and "on-hold".
Clearing a service code removes it from the memory of the ECM. When a diagnostic is corrected (diagnostic code present indicator is OFF), it is necessary to remove the code from the memory of the ECM. The ECM does not allow clearing the diagnostic code that is active. After a diagnostic code is cleared, the next active diagnostic code is shown on the display.
Reference: For more information on how to access, scroll and clear diagnostic codes, refer to the Troubleshooting, "Accessing Diagnostic Information" module in this manual.
Diagnostic Example
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| Illustration 2 | g01119201 |
Conveyor ECM display (1) ECM display showing CID with diagnostic code present indicator (2) ON (2) Diagnostic code present (active) indicator (green) (3) Calibration mode indicator (green) (4) Power indicator (green) (5) ECM display showing FMI with diagnostic code present indicator (2) ON | |
The combination of CID FMI (4, 5) and diagnostic code present indicator (1) describe one active diagnostic code. The display will toggle between the CID and the FMI for one second each.
In the example shown above for the conveyor system, the CID is "104" which is for the right pump flow solenoid. The FMI is "F03" which indicates "voltage above normal or short to + V". A troubleshooting procedure is available for all of the diagnostic codes for the conveyor system. Refer to Troubleshooting, "Diagnostic Code Procedures" section in this manual.
Reference: For a complete list of CID codes for the Conveyor Electronic Control System, refer to the Troubleshooting, "Diagnostic Code List" module in this manual.
In the example display above, the power indicator (4) is illuminated in order to show that the ECM is powered ON.
Calibration Mode 2
Whenever a sensor, a solenoid or a new ECM is installed in the conveyor system, a calibration procedure for the involved component must be performed. Mode 2 must be accessed in order to perform the calibrations. The system will function without these adjustments, however, the best performance will result only after these adjustments are made. Various submodes for specific calibration procedures can be selected while in mode 2. Each component to be calibrated has a particular submode number within calibration mode 2. The submode number is a two digit number which is preceded by the letter "c". Calibration information can be stored in the ECM memory when a submode is selected. The calibration mode indicator (2) is used during the calibration procedures in order to determine whether a calibration has been accepted. For more information on Calibration Mode 2 and the available submodes, refer to the Testing and Adjusting, "Calibration" module in this manual.
Burner Service Mode 3
Burner service mode 3 is only available for machines equipped with the Burner Electronic Control System. The burner ECM does not have a display area. The conveyor ECM shares the display area with the burner ECM.
Burner service mode 3 will allow service personnel access to the stored diagnostic information for the burner ECM. This information is for assisting service personnel with the troubleshooting for burner system error codes and diagnostic codes that are activated by the burner ECM.
Reference: For more information on the Burner Electronic Control System, refer to the Burner Electronic Control System, KENR5001 manual.