INSTALLATION
SETUP/PHYSICAL INSTALLATION
I-E96-403A
2 - 7
Power Wiring
There are five terminals that provide power and ground con-
nections. See Figure
for terminal locations. Terminal E3 is
the +24 VDC power connection. Terminal E2 is the I/O com-
mon. Terminal E1, E4 and E5 are shield connections.
Make power connections to the TU after it is mounted in the
NFTP01. Make sure cabinet and I/O power are turned off
before connecting ground and power wiring. Refer to the follow-
ing steps when installing the TU into a modular power supply
system.
1. Attach a 14 AWG wire from the +24 VDC power source
within the cabinet or an ex24 VDC source to the E3 ter-
minal on the TU.
2. Attach a 14 AWG wire from the DC bus bar at the bottom of
the cabinet to the E2 terminal of the TU.
3. Attach the E1 shield to the shield bus bar in the cabinet.
4. Attach the E4 shield to the shield bus bar in the cabinet.
5. Attach the E5 shield to the shield bus bar in the cabinet.
Figure 2-3. Terminal Assignments and Input Example for NTAI02
–7
–7
0.25 A FUSE
COLD JUNCTION
RTD
SHIELD FOR P2
SHIELD FOR P1
SHIELD FOR P3
CALIBRATION
SOCKET
COLD JUNCTION
RTD
+
–
MILLIVOLT
INPUT
THERMOCOUPLE
INPUT EXAMPLE
TERMINAL BLOCKS
TB1A(+) AND TB1B(–)
TERMINAL BLOCKS
TB2A(+) AND TB2B(–)
TB1A(+)
TB2A(+)
TB1B(–)
TB2B(–)
SOCKET FOR
NKTU01/11 CABLE
FROM ANALOG
SLAVE
+24 VDC
SOCKET FOR
NKTU01/11 CABLE
FROM ANALOG SLAVE
INPUT SOCKET
FOR DAISY
CHAINING OR
FROM IMAMM03
OUTPUT SOCKET
FOR DAISY
CHAINING NTAI02
EXTERNAL/
INTERNAL
CALIBRATION
SELECT SWITCH
T00466A
COMMON
E4
NTAI02
P2
P4
P5
P1
NASM
NASM
S1
E1
EXT.
INT.
P3
F1
E2
E5
TP1
(+)
TP3
(+)
TP4
(–)
TP2
(–)
EXT. TEST INPUT
INT. TEST OUTPUT
E3
+1
+1
–1
–1
+2
+2
–2
–2
+7
+7
+6
+6
–6
–6
+5
+5
–5
–5
+4
+4
–4
–4
+3
+3
–3
–3
+8
+8
–8
–8
