NTAI06 TERMINATION UNIT CONFIGURATION
INTRODUCTION
B - 2
I-E96-301B
®
Table B-1. NTAI06 Input Types
Input Type
Signal Type
Thermocouple
E, J, K, L, N (14 AWG)
N (28 AWG), R, S, T, U
Chinese E, Chinese S.
Millivolt
-100 to +100 mV
High Level
-10 V to +10 V
Current
4 to 20 mA, external or system powered.
3-Wire RTD
Resistance Range: 0 to 500 Ohms
RTDs: 10, 100, 120 Ohms
Chinese 53 Ohms (3-wire)
Table B-2. NTAI06 Jumper Configurations
Input Type
Jumper Number
J1 - J32
J33 - J48
J49 - J64
Single Ended Voltage
1 - 2
1 - 2
2 - 3
Differential Voltage
1 - 2
1 - 2
1 - 2
System Powered 4-20 mA
2 - 3
2 - 3
2 - 3
External Powered 4-20 mA
1 - 2
2 - 3
1 - 2
3-Wire RTD
1 - 2
1 - 2
1 - 2
NOTE: Jumpers used by each input channel are listed with the terminal assignments in Figure B-3.
Table B-3. NTAI06 Input Type Descriptions
Input Type
Input Description
Single
Ended
Voltage
This jumper configuration connects the minus
(-) input terminal to I/O COM on the NTAI06. The IMASI03 measures the voltage at the plus
(+) input terminal with respect to the C terminal. No connection to the C terminal is necessary.
Differential
Voltage
This jumper configuration connects the plus (+) and minus (-) inputs directly to IMASI03
differential input. Channel to channel and channel to system signal isolation is achieved for all
voltage input types, including high level voltage, millivolts and thermocouples. No connection
to the C terminal is necessary.
System
Powered
4-20 mA
This jumper configuration connects the plus (+) input terminal to 24 VDC through a
fuse on the NTAI06. The minus (-) input terminal connects to a precision resistor that
generates a single ended voltage (1 to 5 V) for the IMASI03 to measure. No connection to the
C terminal is necessary. INFI 90 must have +24 Volts (system power) installed.
External
Powered
4-20 mA
This jumper configuration connects the plus (+) input terminal to one end of a precision
resistor and the minus (-) input to the other end of the same precision resistor in the NTAI06.
An isolated 1 to 5 Volts is generated for the IMASI03 to measure. No connection to the C
terminal is necessary.
3-Wire
Resistance
This jumper configuration connects the plus (+) and minus (-) inputs and the COM input
directly to IMASI03 three-wire input. Channel to channel and channel to system signal
isolation is maintained. The two common leads of the RTD element should be connected
across the plus (+) and common (C) terminals, and the third lead should be connected to the
minus (-) terminal.