Allen-Bradley 1407-CGCM, User Manual, Page: 42 / 252

Rockwell Automation Publication 1407-UM001H-EN-P - November 2014
#HAPTER CGCM Unit Operation
$ISCRETE/UTPUTS
The CGCM unit provides two discrete open collector outputs, the fault output
and the redundancy relay output. These are sinking type outputs internally
connected to the control power BAT(-) supply. They are intended to drive a
user-supplied relay connected between the control power BAT(+) supply and the
applicable discrete output terminal.
&AULT/UTPUT
The fault output can be used to annunciate a fault via a user-supplied relay. The
user chooses, from a predetermined list, the conditions for this output. The fault
output is labeled FLT.
The fault enable output tags in the Output table determine which faults activate
the fault relay output.
2EDUNDANCY2ELAY/UTPUT
The redundancy relay output is used to transfer excitation of the generator from
the primary CGCM unit to the redundant CGCM unit in dual unit systems.
The redundancy relay output is labeled RD RLY.
#OMMUNICATION
The CGCM unit provides three communication ports along with software
inputs and outputs.
#OM&ACTORY4EST0ORT
Not for customer use. This port is used to calibrate the CGCM unit during
factory testing.
#OM2EDUNDANCY0ORT
The redundancy port lets one CGCM unit communicate with its partner
CGCM unit in a redundant system, letting the partner unit auto-track the
primary unit's control modes.
#ONTROL.ET.ETWORK0ORT
The version 1.5 ControlNet network port is used to interface with a Logix family
programmable logic controller. Through this port, RSLogix 5000 software
facilitates setting CGCM unit configuration parameters. Control, metering, and
protection settings are communicated to the CGCM unit by using this port. The
CGCM unit firmware is flash programmable through this port.