Black Box IC108A Guia do Utilizador Página 45

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Advant
®
Smart Device (HART
®
) Interface User’s Guide
Section 2.3.1 Connecting to a SHIM
3BUR 001 085R0001 REV A 2-33
Figure 2-25 shows the process connections for the AI820 when installed on the Compact MTU
TU810.
External fuses to each smart transmitter must be installed to protect the power to other SHIMs
connected to the same power supply.
Figure 2-25. AI820 with Compact MTU (TU810) Process Connections
AI820
TU810
EM
Process
C1
B1
A1
X1
X2
L1+
L1-
C2
B2
A2
C3
B3
A3
C4
B4
A4
C5
B5
A5
C6
B6
A6
C7
B7
A7
C8
B8
A8
L2+
L2-
L1+
L1-
L2+
L2-
L2+
L1+
Diff.
Amp
+
LPF
Diff.
Amp
+
LPF
Diff.
Amp
+
LPF
Diff.
Amp
+
LPF
LPF = Low Pass Filter
Compensation
4W
Compensation
4W
Compensation
4W
Compensation
4W
L1+
I1I+
I1-
L1-
L1+
I1U+
I1IB
L1-
L1+
I2I+
I2-
L1-
L2+
I3I+
I3-
L2-
L2+
I3U+
I3IB
L2-
L2+
I4I+
I4-
L2-
L2+
I4U+
I4IB
L2-
L1+
I2U+
I2IB
L1-
250
250
250
250
250250250250
Exc
SHIM
+
-
Smart
Transmitter
Fuse
0.1A
Sig+
Sig-
24 Vdc
Pwr. Sup.
+
_
Exc
SHIM
+
-
Smart
Transmitter
Fuse
0.1A
Sig+
Sig-
Exc
SHIM
+
-
Smart
Transmitter
Fuse
0.1A
Sig+
Sig-
Exc
SHIM
+
-
Smart
Transmitter
Fuse
0.1A
Sig+
Sig-
24 Vdc
Pwr. Sup.
+
_
4 -20 mA
4 -20 mA
4 -20 mA
4 -20 mA
+
_
+
_
+
_
+
_
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