Allen-Bradley 1407-CGCM, User Manual, Page: 110 / 252

Rockwell Automation Publication 1407-UM001H-EN-P - November 2014
#HAPTER CGCM Unit Startup
6ERIFYTHE#ONTROL.ET.ETWORK#ONNECTION
Follow these steps to verify the ControlNet network connection.
1. Use the RSWho function of RSLinx software to browse and confirm the
CGCM unit is on the ControlNet network.
2. Verify the CGCM unit’s firmware revision is the same or later than
indicated on the firmware revision label.
3. Use RSLogix 5000 software to confirm that the CGCM unit’s connection
status is good and that the communication logic (MSG instructions) is
executing properly.
4. Verify that scheduled and unscheduled data communication is updating by
viewing changing data in the controller tag database.
3TATICALLY4EST#'#-3YSTEM2EDUNDANCY/PERATION
These steps apply only for CGCM units configured in a redundant pair.
1. Connect a suitable load to the excitation output terminals of the CGCM
units through redundancy relays you provide.
2. Enable excitation in FCR mode with an FCR setpoint greater than the loss
of field current setpoint.
3. Verify that only one CGCM unit is the primary by observing the status of
the
Spare1 tag in the Input table, the state of the primary CGCM unit’s
redundancy relay output, and the exciter field output current.
4. Disable excitation on the primary CGCM unit by removing the hardware
excitation enable input, or clearing the software excitation enable tag, or
removing the ControlNet connections, or removing 24V DC control
power from the primary CGCM unit.
5. Verify that the back-up CGCM unit has become the primary by observing
the status of its
Spare1 tag in the Input table, the state of its CGCM unit’s
redundancy relay output, and the exciter field output current.