Bailey Infi 90 NTTA01, Instruction

Page: 10 / 29

INTRODUCTION
INTENDED USER
1 - 2 I-E96-419A
®
INTENDED USER
System engineers and technicians should read this manual
before installing and placing the TTA termination unit into
operation.
Do not put the termination unit into operation until
this instruction is read and understood.
UNIT DESCRIPTION
The NTTA01 termination unit is a single printed circuit board
that attaches to an NFTP01 Field Termination Panel inside the
INFI 90 cabinet. The termination unit has four socket connec-
tors: P1, P2, P3 and P4.
P1carries the converted high level inputs from the field device
to the IMASM02 slave module through an NKTU01 Termina-
tion Unit Cable.
P2 and P4 are used for connecting the IMAMM03 module and
for interconnecting TTA termination units. The IMAMM03
module is connected to P2 of the first termination unit in an
interconnecting configuration. P4 of the first termination unit
is connected to P2 of the second when interconnecting termi-
nation units. Only four termination units can be intercon-
nected for internal calibration voltage routing.
The P3 socket is used for internal calibration. When calibrat-
ing, move the NKTU01 cable in the P1 socket to the P3 socket.
INSTRUCTION CONTENT
This manual consists of five sections and two appendices.
Introduction Contains an overview of the features, specifications and a
description of the TTA termination unit.
Installation Describes precautions to observe when handling modules and
setup procedures required before unit operation. This section
discusses dipshunt settings and installation procedures.
Maintenance Provides a maintenance schedule.
Repair/Replacement
Procedures
Details how to replace a termination unit.
Support Services Describes the support services (spare parts, training, docu-
mentation, etc.) available from Bailey Controls Company.
Appendix A Contains data to connect the termination unit to the IMASM02
Thermocouple/Millivolt Input Slave. Appendix A shows the
switch settings and cabling requirements for the IMASM02
module.
Appendix B Contains data to connect the termination unit to the IMAMM03
Analog Master Module. Appendix B shows the switch settings
and cabling requirements for the IMAMM03 module.