Allen-Bradley 1407-CGCM, User Manual, Page: 30 / 252

Rockwell Automation Publication 1407-UM001H-EN-P - November 2014
#HAPTER Installation
&IGURE#URRENT#ONNECTIONSFORPHASE$ELTA'ENERATORWITH4WO#4S
The connections shown in this diagram can be used if only two CTs are available
in the generator circuit. Two CTs can be used only with a three-wire delta
generator. The circuit shown in this diagram can be substituted for the CT
connections shown in Figures
9 , 11 , 14 , and 16 .
!UXILIARY)NPUT
The auxiliary input is a +/- 10V DC input. The auxiliary input terminals are on
TB7 and are labeled VREF(+) and VREF(-). SHLD3 is provided for landing the
cable shield. Twisted, shielded cabling is required for the VREF connections.
2EMOTE%XCITATION%NABLE)NPUT
The remote excitation enable input is a 24V DC input. The remote excitation
enable input terminals are on TB7 and are labeled EX-D(+) and EX-D(-).
$ISCRETE/UTPUTS
There are two types of discrete outputs: fault relay outputs and redundancy relay
outputs.
G
TB 3
I1 (+) 5 A
I1 ( -)
I3 (+) 5 A
I2 (+) 5 A
I2 ( -)
I3 ( -)
I1 (+) 1 A
I2 (+) 1 A
I3 (+) 1 A
A C
B
Customer Supplied CT
Shorting Switch or Test
Block