Cat® Command For Hauling Caterpillar

EID 1485 Autonomous Stop Receiver Radio Not Receiving Radio <RF> Signals

Follow this procedure if an event EID 1485 Autonomous Stop Receiver Radio Not Receiving Radio <RF> Signals occurs. When this event code is activated, the autonomous mining truck (AMT) will come to a complete controlled stop. This event code can be triggered by damage to any of the key components of the A-stop system on the AMT: antennas, receivers, cables, and connectors. This event code can also be caused by a physical blockage between the two antennas on opposite sides of the AMT platform.

Use an OCS laptop on the A-Stop locator page, and the test mode on an A-Stop to compare signal strength between the driver side and passenger side A-Stop antenna. Comparing the signal strength will assist in determining if the issue is isolated to a specific side.

Test Step 1. VISUALLY INSPECT A-STOP ANTENNAS.

1. The A-stop antennas are mounted atop the mode lights on the front of the truck.

Expected Result:

A-stop antenna is not aligned or orientated correctly.

Results:

• A-stop antenna is not aligned or orientated correctly. -

  Repair: Position and mounting are corrected.

  Proceed to Test Step 11

• A-stop antenna is correctly mounted and aligned. - Proceed to Test Step 2

Test Step 2. VISUALLY INSPECT A-STOP MOUNTING STRUCTURES.

1. Ensure that the mounting structure is secure and correctly orientated.

Expected Result:

A-stop mounting structure is damaged or misaligned.

Results:

• A-stop mounting structure is damaged or misaligned. -

  Repair: Position and mounting are corrected.

  Proceed to Test Step 11

• A-stop mounting structure is secure and mounted correctly. - Proceed to Test Step 3

Test Step 3. VERIFY LINE OF SITE BETWEEN A-STOP ANTENNAS.

1. The A-stop antennas are mounted atop the mode lights on the front of the truck. There should be a clear path between the two antennas.

Expected Result:

Blockage discovered and removed between A-stop antennas.

Results:

• Blockage discovered and removed between A-stop antennas. -

  Repair: Clear path between antennas.

  Proceed to Test Step 11

• Clear line of site exists between A-stop antennas. - Proceed to Test Step 4

Test Step 4. CHECK FOR LOOSE OR DAMAGED CONNECTIONS OR DAMAGE TO COAXIAL CABLE.

1. Check all connections and lengths of coaxial cable.

2. Begin at one antenna following along entire length up to the receiver in the autonomy cabinet.

   1. If any loose connections are found, examine connection for damage or corrosion

   2. If any damage is found on the coaxial cable, replace entire length of coaxial cable.

3. Repeat beginning at second antenna.

Expected Result:

Damage is found and repaired.

Results:

• Damage is found. -

  Repair: Repair or replace coaxial cable.

  Reference Coaxial Best Practice Guide.

  This document can be found in the Publications box site.

  Proceed to Test Step 11

• No damage is found on system. - Proceed to Test Step 5

Test Step 5. REPLACE BOTH A-STOP ANTENNAS.

1. A-stop antennas are mounted atop the mode lights on the front of the truck.

2. Order and replace BOTH A-stop antennas.

Expected Result:

Both A-stop antennas are replaced.

Results:

• Both A-stop antennas are replaced. - Proceed to Test Step 11

Test Step 6. REPLACE FIRST A-STOP RECEIVER.

1. Order and replace one of the receivers located in the autonomy cabinet.

Expected Result:

First A-stop receiver is replaced.

Results:

• First A-stop receiver is replaced. - Proceed to Test Step 11

Test Step 7. REPLACE SECOND A-STOP RECEIVER.

1. Replace second a-stop receiver and replace with the a-stop receiver removed in a previous step.

Expected Result:

Second A-stop receiver is replaced.

Results:

• Second A-stop receiver is replaced. - Proceed to Test Step 11

Test Step 8. REPLACE THE A-STOP COAXIAL CABLES INSIDE THE AUTONOMY CABINET.

1. Replace the A-Stop system coaxial wiring that is inside the autonomy cabinet for both right and left sides.

Expected Result:

Coaxial wiring is replaced.

Results:

• Coaxial wiring is replaced. - Proceed to Test Step 11.

Test Step 9. REPLACE THE A-STOP COAXIAL CABLES FROM THE AUTONOMY CABINET TO THE RIGHT SIDE A-STOP ANTENNA.

1. Replace the A-Stop system coaxial wiring that runs from the autonomy cabinet to the right side A-Stop antenna.

Expected Result:

Coaxial wiring is replaced.

Results:

• Coaxial wiring is replaced. - Proceed to Test Step 11.

Test Step 10. REPLACE THE A-STOP COAXIAL CABLES FROM THE AUTONOMY CABINET TO THE LEFT SIDE A-STOP ANTENNA.

1. Replace the A-Stop system coaxial wiring that runs from the autonomy cabinet to the right side A-Stop antenna.

Expected Result:

Coaxial wiring is replaced.

Results:

• Coaxial wiring is replaced. - Proceed to Test Step 11.

Test Step 11. RESTART SYSTEM.

1. Key cycle AMT and verify status of event code.

Expected Result:

EID 1485 cleared.

Results:

• EID 1485 cleared. - STOP

• EID 1485 still appears but no parts have been replaced. - Proceed to Test Step 4

• EID 1485 still appears and both antennas have been replaced. - Proceed to Test Step 6

• EID 1485 still appears and first a-stop receiver has been replaced. - Proceed to Test Step 7

• EID 1485 still appears and both A-Stop receivers have been replaced. - Proceed to Test Step 8

• EID 1485 still appears and the autonomy cabinet coaxial wiring has been replaced. - Proceed to Test Step 9

• EID 1485 still appears and the coaxial wiring in the cabinet and to the right-hand side A-Stop antenna. - Proceed to Test Step 10

• EID 1485 still appears, both a-stop antennas, both a-stop receivers and entire length of coaxial cable have been replaced. The cause of the problem is uncertain. Contact Caterpillar technical support with the information that has been gathered. - STOP