ST-72 User's Manual
Document: UM-1007
Revision Level A
57
TB3 & TB4 24VDC inputs
are tied together making
daisy chaining the options
easier, and is the bulk power
for transmitter. EXC+ is
wired internally to channel
"EXC's" and EXC- (COM)
to channel "LO's".
R1-R16 are 150 ohm terminating
resistors for 4-20ma inputs.
J3 & J4 are interchangeable
I2C connectors used to add
option PCB assemblies to
the ST-72
For External Device
Power Supply
Plus (+) Signal
24VDC Power
Input
Common
LO
LO
EXC
EXC
0010-1260 ASSY: 10-0344
ST-72 Analog Input Board
40/56
HI
HI
Rev E
EXC
EXC
R6
R5
LO
EXC
HI
LO
EXC
HI
LO
EXC
HI
LO
EXC
EXC
LO
LO
HI
EXC
LO
HI
LO
HI
38/54
39/55
08/24
07/23
06/22
37/53
05/21
13/29
45/61
14/30
46/62
15/31
47/63
16/32
48/64
R8
R7
R16
R13
R15
R14
HI
HI
LO
LO
EXC
LO
HI
EXC
LO
EXC
LO
HI
EXC
LO
LO
HI
EXC
HI
EXC
LO
HI
EXC
HI
EXC
-
+
LEDs indicate board
configuration.
EX
C
HI
EX
C
HI
LO
LO
01/17
HI
LO
EXC
HI
LO
EXC
HI
LO
EXC
HI
LO
LO
HI
HI
EXC
LO
HI
EXC
EXC
HI
R4
36/52
04/20
35/51
03/19
R3
34/50
02/18
33/49
LO
TB1
LO
J3
24VDC
J1
D4
D5
D6
D3
AI
09/25
41/57
10/26
42/58
11/27
43/59
12/28
44/60
R1
R2
R9
R11
R10
R12
TB4
Status
TB3
Ch.01-16
Ch.17-32
Ch.33-48
Ch.49-64
D1
J2
PGM
24VDC
-
+
EXC
EXC
EXC
EXC
EXC
HI
LO
HI
EXC
HI
LO
HI
EXC
LO
HI
LO
HI
EXC
LO
HI
LO
HI
TB2
J4
3 Wire 4-20 mA
Transmitter
EXC
HI
LO
+PWR
COM
SIG
2 Wire 4-20 mA
Transmitter
EXC
HI
LO
+PWR
NC
SIG
Figure 3-2
Summary of Contents for ST-72
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Page 108: ...ST 72 User s Manual Document UM 1007 Revision Level A 102 Figure 6 4...
Page 128: ...ST 72 User s Manual Document UM 1007 Revision Level A 122 8 5 3 COPY CHANNELS Figure 8 7...
Page 129: ...ST 72 User s Manual Document UM 1007 Revision Level A 123 8 5 4 PROGRAMMABLE RELAYS Figure 8 8...