Thermocouples – B&B Electronics K-TYPE THERMOCOUPLE AMPLIFIER TCDA User Manual
Page 8
6
Documentation Number TCDA0997 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Figure 3.1: TCDA Connections
NOTE: A 12VDC power supply must be connected to the TCDA’s
2.5mm power jack.
1. ------- denotes that pin is not used.
2. Pin 17 and 18 are internally connected to each other to provide
5VDC to REF+ for the SDAXX modules.
3. Pin 19 is internally connected to GND to provide 0VDC to REF-
for the SDAXX and SPDA modules.
provide +5V to REF+ in the
modules (AGND to AGND
Pin 17 and 18 are internally
connected in the TCDA to
XXXSDAXX and XXXSPDA
A/D ch.
A/D ch.
in the ADIO12 module).
REF-
REF+
+5VDC
P
o
w
e
r
S
u
p
p
ly
2
.5
m
m
P
o
w
e
r
Ja
ck
T
C
D
A
M
o
d
u
le
TC #1
19
GND
18
17
19
18
17
GND
7
TC #0
8
9
GND
1
GND
7
8
9
GND
1
Thermocouples
ye
llo
w
re
d
T1-
T1+
channel 1
re
d
ye
llo
w
T2-
T2+
channel 2
A
/D
M
o
d
u
le
RS-485
Port
RS-232
or
Table 3.1: Pinout of TCDA Module
Pin #
Function
Pin #
Function
1 GND 14 -------
2 ------- 15 -------
3 ------- 16 -------
4
-------
17
looped to pin 18
5
-------
18
looped to pin 17
6 ------- 19 GND
7 GND 20 -------
8
TC # 0
21
-------
9
TC # 1
22
-------
10 ------- 23 -------
11 ------- 24 -------
12 ------- 25 -------
13 -------