Rockwell Automation 284E ArmorStart with EtherNet/IP - User Manual - Manual (Page 228)

228 Rockwell Automation Publication 280E-UM001B-EN-P - July 2012
Chapter 10 Troubleshooting
DB1 VBus Link Fault
Control Supervisor Object “DB1 Fault” Attribute Bit 6.
For proper operation, the DB1 monitors parameters from the Drive internally
inside the ArmorStart. If the internal communications to the drive is lost, then
this fault is issued. Since the DB1 can no longer provide resistor protection, the
user must implement logic to open the input contactor.
Troubleshooting – Make sure that 3-phase line power and control power is
applied to unit. Attempt to reset fault. If fault persists, replace control module.
DB1 Comm Fault
Control Supervisor Object “DB1 Fault” Attribute Bit 8.
The communications link is monitored continuously. If the DB1 stops
responding, then the MCB issues this fault. Since the DB1 can no longer provide
resistor protection, the user must implement logic to open the input contactor.
Troubleshooting – Replace control module.
DB1 Thermal Warning
Control Supervisor Object “DB1 Status” Attribute Bit 1.
A DB1 Thermal Warning is issued if the predicted future resistor body
temperature is greater than the Max DB1 resistor temperature x DB1 Thermal
Warning Percent.
Troubleshooting – None. DB1 resistor thermal value has exceeded the preset
threshold of 90% of thermal value.