Rockwell Automation T7903 ICS Regent+Plus I/O Termination Assembly (ITA) User Manual
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I/O Termination Assembly
1 4
Industrial Control Services
A set of five screw terminals on the Varelco variant of the ITA provides
the facility to ground the spare Varelco pins and for the reference
analog voltage to be connected to the I/O module (this facility
specifically concerns the T7420 Analog Input Module when it is used
with differential voltage input wiring). The detailed connections are
listed in Table A-3.
Table A-3. Varelco J10 Connection Details.
Connector
Ident
Pin Ident Comments
J10
A
Connect to module
AREF1 & AREF2.
(T7420 only).
J10
B
Connect to AGND
(T7420 only).
J10
C
Connect to J10 (GND)
(T7420 only)
J10
D
No Connection.
J10
GND
Connect to ground if not
used on T7420. If used on
T7420, connect the Field
Analog Ground to Pin TT
of the Varelco Connector
and link J10 GND to J10
Pin C.