Thermocouple Input Modules
FEATURES
• Wide Variety of Input Types
• Standard Package and Pin-out
• Single 5V Power Supply
• 12-Bit Resolution
• Optical Isolation from Input to
Output
• Cold Junction Temperature
Compensated Connector Included
• Intermix With G5 Digital Modules
on the Same Rack
• Meets the Requirements of IEEE
472
• UL, CSA, CE Certified (OpenLine only)
73L-IT
73G-IT
CIRCUITRY
G5
G5: Connector
Wiring
THERMO-
COUPLE
T
COLD
REFERENCE
AMP
T
1
N/C
N/C
V/F
+
–
OMEGA
CONNECTOR
TYPE SMP
INCLUDED
2
+5V
SQUARE-
WAVE
OUTPUT
GROUND
3
DC/DC
CONVERTER
V
S
V
S-
+
–
MODULE
Thermocouple Wire Colors
Type
+
White
Yellow
Blue
Black
–
Red
Red
Red
Red
4
5
V
S
10KΩ
J
K
T
R
ISOLATION
I/O Modules
I/O
32
OpenLine
®
I/O MODULE
PIN #
NC 1
1
OpenLine
®
:
Connector Wiring
5.23K
9
MODULE ID
CH. A
–
+
CH. B
–
+
SIGNAL
CONDITIONING
8
NC 2
2
COLD
JUNCTION
TEMP.
COMP.
RXD
+
–
OMEGA
CONNECTOR
TYPE SMP
INCLUDED
A/P
µP
OPTICAL
ISOLATION
7
10K
Vs
6
5
TXD
NC 3
3
+
Vcc
–
SIGNAL
CONDITIONING
MODULE
ISOLATED
DC/DC
CONVERTER
NC 4
TERMINAL
BLOCK #
4
COLD
JUNCTION
TEMP.
COMP.
Thermocouple Wire Colors
Vs
–
GND
Type
J
K
T
R
+
White
Yellow
Blue
Black
–
Red
Red
Red
Red
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com