Pump Electronic Monitoring System for Well Stimulation Pumps Caterpillar

Cross-Reference Information for Event Codes

Event codes are generated when abnormal operating conditions exist. Table 1 is a list of the event codes for the well stimulation pump. The event codes are cross-referenced with the appropriate procedure that can be used to troubleshoot the code.

Portions of this material are reprinted with permission from SAE J1939DA_201607 © 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.

Active Event Codes

An active event code represents a problem with well stimulation pump operation. Correct the problem as soon as possible.

Active event codes are listed in ascending numerical order. The code with the lowest number is listed first.

Illustration 1 is an example of the operating range of a sensor.

Illustration 1	g01365757
Example of the typical operating range of a sensor (1) This area represents the normal operating range of the well stimulation pump parameter. (2) In these areas, the well stimulation pump is operating in an unsafe operating range of the monitored parameter. An event code will be generated for the monitored parameter. The sensor circuit does not have an electronic problem. (3) In these areas, the signal from the sensor is outside of the operating range of the sensor. The sensor circuit has an electronic problem. A diagnostic code will be generated for the sensor circuit. Refer to Troubleshooting, "Diagnostic Trouble Codes" for additional information on diagnostic codes.

Logged Event Codes

When the Electronic Control Module (ECM) generates an event code, the ECM may log the event code in permanent memory. The ECM has an internal diagnostic clock. The ECM will record the following information when an event code is generated:

• The hour of the first occurrence of the code

• The hour of the last occurrence of the code

• The number of occurrences of the code

Logged events are listed in chronological order. The most recent event code is listed first.

This information can be helpful for troubleshooting intermittent problems. Logged codes can also be used to review the performance of the well stimulation pump.

Clearing Event Codes

A code is cleared from memory when one of the following conditions occur:

• The code does not recur for 100 hours.

• A new code is logged and there are already ten codes in memory. In this case, the oldest code is cleared.

• The service technician manually clears the code.

Always clear logged event codes after investigating and correcting the problem which generated the code.

Troubleshooting

To troubleshoot the well stimulation pump, perform the following steps to diagnose a malfunction:

1. Obtain the following information about the complaint:

   • The event and the time of the event

   • Determine the conditions for the event. The conditions will include the well stimulation pump rpm and the load.

   • Determine if there are any systems that were installed by the dealer or by the customer that could cause the event.

   • Determine whether any additional events occurred.

2. Verify that the complaint is not due to normal well stimulation pump operation. Verify that the complaint is not due to error of the operator.

3. Narrow the probable cause. Consider the operator information, the conditions of operation, and the history of the well stimulation pump.

4. Perform a visual inspection. Inspect the following items:

   • Oil level

   • Oil supply

   • Wiring

   • Connectors

Be sure to check the connectors. This check is important for problems that are intermittent. Refer to Troubleshooting, "Electrical Connectors - Inspect" for additional information.

If these steps do not resolve the problem, refer to Table 1 for the procedure to troubleshoot the event code.