Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
17
Installation
Chapter
2
Electrical Connections
The CGCM-DLR unit connections are dependent on the application and
excitation scheme. All inputs or outputs cannot be used in a given installation.
Incorrect wiring can result in damage to the unit.
Connect the CGCM-DLR unit terminals with copper wire rated for a minimum
of 600V. General appliance wire that is rated for minimum temperatures of
105 °C (221
°
F) is acceptable. All wire must be copper. Select circuit conductors
that are based on good design practice.
The wire gauge range that is listed in the
Terminal Block Label Description
table
indicates the physical capabilities of the connector.
The CGCM-DLR unit terminals are on the front, bottom, and right panel of the
unit. The nine-pin connector on the bottom of the unit is used for
communication between CGCM-DLR units in a redundant system. Suggested
torque for terminal screws is 1 N•m (9 lb•in).
See pages
…
for typical connection diagrams.
Terminals to be used as landing points for shielded wires are provided on several
terminal strips. Shield terminals with the same name are internally connected
together but are not connected to protective earth or any internal unit circuitry.
Table 1 - Terminal Block Label Description
Terminal Block
Wire Gauge
Range
Label
Description
TB1
2.6…2.1 mm
2
(10…12 AWG)
PMG A
Phase A excitation power supply
PMG B
Phase B excitation power supply (three phases only)
PMG C
Phase C excitation power supply
SHLD1
Shield 1: landing points are tied together but are not connected internally to protective earth or
other unit circuitry
SHLD1
TB2
SHLD2
Shield 2: landing points are tied together but are not connected internally to protective earth or
other unit circuitry
SHLD2
EXC(-)
Excitation output negative
EXC(+)
Excitation output positive