Cummins

2676

UnclassifiedGeneral

What This Code Means

2676 ALTERNATOR FREQUENCY CONFLICT Lamp: Shutdown

Possible Causes

  • •Alternator line frequency and alternator excitation frequency do not match
  • •Measured alternator line frequency and measured alternator excitation frequency do not agree

Suggested Actions

  1. 1Check the Alternator Frequency Gain trim using the Operator Panel (see Figure 5-19, sheet 1) or InPower
  2. 2Check voltage sense leads and excitator power lead for open or shorts
  3. 3Measure the alternator line frequency (J22-1 to J22-4) and measure the alternator excitation frequency (J18-1 to J18-2), ensuring alternator line frequency * Alternator Frequency Gain equals the excitation frequency

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