Control Panel

OVERVOLTAGE ALARM

If the generator voltage rises above 110% for >3 seconds, an alarm will be issued.

If the generator voltage rises above 130% for >0.2 seconds, an alarm will be issued.

INTERNAL FAILURE SHUTDOWN ALARM

Any internal failure that can be detected such as corrupted firmware will cause this shutdown alarm. This alarm cannot be cleared.

CANBUS ALARM

Where applicable, if the Canbus communications link fails to com- municate, a “Canbus Alarm” will be generated. This only applies to systems with external ignition modules. The alarm may be generated if:

1.The physical link is broken.

2.The Ignition Module fails or resets.

3.The Nexus Controller fails or resets.

4.Having the Battery Chargers 120 VAC connected without a battery installed.

5.A blown 10 amp Ignition Module fuse (approximately 12 inches away from the starter).

6.A blown 25 amp system fuse (located approximately 12 inches away from the DC alternator).

NOTE:

The “Canbus Alarm” will not clear on its own. To clear the alarm, press the “enter” key to acknowledge the alarm. The alarm will clear and if the fault is still present, the alarm will reoccur.

IGNITION ALARM

When an ignition alarm occurs, a generic message “Ignition Fault” will be displayed as the fault code.

MAINTENANCE WARNING

When a maintenance period expires, a warning message will be posted. The warning can be reset by hitting the Enter key. Resetting will clear the warning and reset the maintenance counters for the condition annunciated. The history log will reflect the maintenance warning.

ALARM CANCEL

When the generator is shut down due to a latching alarm, the Auto /Off/ Manual switch must be set to the off position and the ENTER key pressed to unlatch any active fault and clear the corresponding fault alarm message.

COMMON ALARM RELAY

The common alarm relay will be activated if there is a shutdown alarm. It will not activate on warnings or indicate that the Auto/Off/ Manual switch is in the OFF position. The OFF position will clear the alarms and the relay. The relay will not be used to indicate a generator is not activated.

The common alarm connections are wired to a set of potential- free (dry) contacts on the Nexus controller board. These Normally Open (N.O.) contacts close when an alarm condition occurs and are used to activate a remote signaling device. The circuit is rated for a maximum of 130mA at 24 VDC. The connections are a short set of free hanging wires that exit the engine harness loom directly behind the Nexus Control Panel and are labeled numbers 209 and 210.

MAINTENANCE ALERTS

Maintenance alerts will be provided for these conditions (see the Maintenance Alert Chart).

SERVICE SCHEDULE ‘A’

Inspect Accessory drive alert

1yr /100hrs

Coolant change & flush

1yr /100hrs

 

 

Inspect spark plugs alert

1yr /100hrs

 

 

Change oil & filter alert

1yr /100hrs

 

 

Inspect battery alert

1yr /100hrs

Change / Inspect air filter alert

1yr /100hrs

SERVICE SCHEDULE ‘B’

Change / Inspect spark plugs alert

2yr/ 250hr

04/11 D .Rev CntrlNexus001

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Generac QT06024AVSX Overvoltage Alarm, Internal Failure Shutdown Alarm, Canbus Alarm, Ignition Alarm, Maintenance Warning

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