ADEM Fault Reset

Background

On any Caterpillar (r) ADEM unit the EMIT panel will signal the engine controller to start and stop. If there is a fault on the engine it can be cleared on the engine panel during the EMIT "Standby" state. In some cases it will be desired that the EMIT panel reset the faults on the engine panel automatically during startup.

Wiring

To reset the engine codes before cranking the keyswitch power needs to be momentarily disconnected. This would typically be from a panel output from the RESET function.

To configure an output to the RESET function:

• Navigate to Settings - Brain - Output Setup - Digital Output Function Selection
• Select a spare output and pick option RESET

For the chosen digital output, wire the relay with the normally closed contact providing power to the engine keyswitch power. In this way, when the RESET output powers momentarily during startup it will open (cut power) for about 5 seconds at the beginning of the start sequence.

Some engines may have a "Diagnostic Reset" input which can be wired to the RESET relay to close to ground instead of cutting keyswitch power.

Engine Specific Notes

3600 A4 HMI

Disconnect relay will break the brown wire (105-A232) from terminal block 70 in the CAT panel.

Note: The CAT documentation note about the diagnostic reset at TB-73 is incorrect, CAT is working on a solution

3600, 3500 A4 OCP (To be verified)

Disconnect relay will break the brown wire (105-A232) from terminal block 70 in the OCP box.

Note: CAT manual also mentions TB 48 can be disconnected to reset

3500 A3 (To be verified)

Disconnect relay will break the wire P600-T18 at TB 18

3600 A3 (To be verified)

Disconnect relay will break the wire P600-A3 (P700-A31) at TB 4