NOCURRENT
What This Code Means
Erratic power metering signal not consistent with system configuration; Reversing power direction does not resolve the problem; Automatic Paralleling Module (APM) has stopped communicating on RBUS; APM was detected on the RBUS network but is no longer communicating; Primary controller has lost communication with the secondary controller; A secondary controller was detected, then communication was lost; Generator has absorbed more than 25% reactive power (magnetic excitation current) for 20 seconds; Generator does not know if the metering is connected or the orientation of the connection; Generators cannot share load accurately until this information is known
Possible Causes
- •APM is unplugged
- •Bad wiring to the CT (Current Transformer)
- •Bus voltage on the other generator is not calibrated correctly
- •Bus voltage on this generator is not calibrated correctly
- •Generator voltage on other generator is not calibrated correctly
- •Generator voltage on this generator is not calibrated correctly
- •Intermittent RBUS connections
- •Intermittent connections on RBUS network wiring
- •Primary controller is powered down
- •RBUS disconnected
- •Secondary controller battery disconnected
- •System commissioning and startup not yet complete
- •The CT (Current Transformer) is not connected to the controller
- •The CT is not connected to the controller
- •The output leads from the generator do not go through the CT in the correct direction
- •Too much tension on wires from the CT to the controller
- •Updating firmware in secondary controller
Suggested Actions
- 1Check RBUS communication connections
- 2Check the battery connections
- 3Contact an authorized dealer for paralleling system troubleshooting and service
- 4Refer to APM instructions
- 5See the APM instructions
Related Rehlko Fault Codes
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