The Interface Solution Experts
9
HIM
Smart HART
Loop
Interface and Monitor
Table 1.
Terminal Designations
KEY:
+IN/–IN = Current input to HIM from HART device +TX = Transmitter Excitation Current
+I/–I Source = Analog Source Output
+I/–I Sink = Analog Sink Output
A/B = MODBUS Output
NO/NO# = Normally Open
NC/NC# = Normally Closed
CM/CM# = Common
(+) DC/(-) DCC = 24VDC Connection
(AO#) = Analog Output
NOTES:
1.
The standard Single Alarm unit (1PRG) utilizes a DPDT relay.
2. Terminal blocks can accommodate 14-22 AWG solid wiring
(torque to 4 inch-pounds, maximum).
1 2 3
7 8 9 10 11 12
+T
X
HIM
10 11 12
+I
N
-IN
GN
D
- DC
C
+
DC
1 2 3
7 8 9 10 11 12
+T
X
HIM
1 2 3 4 5 6
10 11 12
+I
N
-IN
AO
2
+I
SOUR
C
AO
2
-I SINK
AO
1
+I
SOUR
C
RE
LAY
1
NC1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
AO
1
-I SINK
AO1
-I
SO
UR
C
OR
+I
SIN
K
AO2
-I
SO
UR
C
OR
+I
SIN
K
1 2 3
7 8 9 10 11 12
+T
X
HIM
1 2 3 4 5 6
10 11 12
+I
N
-IN
HART Input,
2 Analog Outputs (2AO)
No Alarm
HART Input,
2 Analog Outputs (2AO)
Single Alarm (-1PRG)
HART Input,
2 Analog Outputs (2AO)
Dual Alarm (-2PRG)
1 2 3
7 8 9 10 11 12
+T
X
HIM
10 11 12
+I
N
-IN
HIM
1 2 3 4 5 6
10 11 12
HIM
1 2 3 4 5 6
10 11 12
HART Input,
3 Analog Outputs (3AO)
No Alarm
4 5 6
1 2 3
7 8 9 10 11 12
+T
X
+I
N
-IN
4 5 6
1 2 3
7 8 9 10 11 12
+T
X
+I
N
-IN
4 5 6
HART Input,
3 Analog Outputs (3AO)
Single Alarm (-1PRG)
HART Input,
3 Analog Outputs (3AO)
Dual Alarm (-2PRG)
1 2 3
7 8 9 10 11 12
+T
X
HIM
10 11 12
+I
N
-IN
A
MO
DB
US
2
1 2 3 4 5 6
10 11 12
HART Input,
2 MODBUS Outputs and
1 Analog Output (MB1AO)
No Alarm
4 5 6
B
MO
DB
US
2
S
MO
DB
US
2
A
MO
DB
US
1
B
MO
DB
US
1
S
MO
DB
US
1
1 2 3
7 8 9 10 11 12
+T
X
HIM
+I
N
-IN
A
MO
DB
US
2
4 5 6
B
MO
DB
US
2
S
MO
DB
US
2
A
MO
DB
US
1
B
MO
DB
US
1
S
MO
DB
US
1
1 2 3
7 8 9 10 11 12
+T
X
+I
N
-IN
A
MO
DB
US
2
4 5 6
B
MO
DB
US
2
S
MO
DB
US
2
A
MO
DB
US
1
B
MO
DB
US
1
S
MO
DB
US
1
HART Input,
2 MODBUS Outputs and
1 Analog Output (MB1AO)
Single Alarm (-1PRG)
1 2 3 4 5 6
10 11 12
HART Input,
2 MODBUS Outputs and
1 Analog Output (MB1AO)
Dual Alarm (-2PRG)
HIM
1 2 3
7 8 9 10 11 12
+T
X
HIM
10 11 12
+I
N
-IN
A
MO
DB
US
2
1 2 3 4 5 6
10 11 12
HART Input,
2 MODBUS Outputs (MB)
No Alarm
B
MO
DB
US
2
S
MO
DB
US
2
A
MO
DB
US
1
B
MO
DB
US
1
S
MO
DB
US
1
1 2 3
8 9 10 11 12
+T
X
HIM
+I
N
-IN
A
MO
DB
US
2
B
MO
DB
US
2
S
MO
DB
US
2
A
MO
DB
US
1
B
MO
DB
US
1
S
MO
DB
US
1
1 2 3
7 8 9 10 11 12
+T
X
+I
N
-IN
A
MO
DB
US
2
B
MO
DB
US
2
S
MO
DB
US
2
A
MO
DB
US
1
B
MO
DB
US
1
S
MO
DB
US
1
1 2 3 4 5 6
10 11 12
HIM
HART Input,
2 MODBUS Outputs (MB)
Single Alarm (-1PRG)
HART Input,
2 MODBUS Outputs (MB)
Dual Alarm (-2PRG)
AO
2
+I
SOUR
C
AO
2
-I SINK
AO
1
+I
SOUR
C
AO
1
-I SINK
AO1
-I
SO
UR
C
OR
+I
SIN
K
AO2
-I
SO
UR
C
OR
+I
SIN
K
AO
2
+I
SOUR
C
AO
2
-I SINK
AO
1
+I
SOUR
C
AO
1
-I SINK
AO1
-I
SO
UR
C
OR
+I
SIN
K
AO2
-I
SO
UR
C
OR
+I
SIN
K
RE
LAY
1
NC1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
2
NC2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
RE
LAY
1
NC
1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
1
NC
1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
2
NC
2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
AO
1
+I
SOURC
AO
1
-I SINK
AO1
-I
SO
UR
C
OR
+I
SINK
AO
2
+I
SOUR
C
AO
2
-I SINK
AO2
-I
SO
UR
C
OR
+I
SINK
AO
3
+I
SOUR
C
AO
3
-I SINK
AO3
-I
SO
UR
C
OR
+I
SINK
AO
1
+I
SOURC
AO
1
-I SINK
AO1
-I
SO
UR
C
OR
+I
SINK
AO
2
+I
SOUR
C
AO
2
-I SINK
AO2
-I
SO
UR
C
OR
+I
SINK
AO
3
+I
SOUR
C
AO
3
-I SINK
AO3
-I
SO
UR
C
OR
+I
SINK
AO
1
+I
SOURC
AO
1
-I SINK
AO1
-I
SO
UR
C
OR
+I
SINK
AO
2
+I
SOUR
C
AO
2
-I SINK
AO2
-I
SO
UR
C
OR
+I
SINK
AO
3
+I
SOUR
C
AO
3
-I SINK
AO3
-I
SO
UR
C
OR
+I
SINK
AO
+I
SO
URC
AO
-I
SI
NK
AO
-I
SO
UR
C
OR
+I
SINK
AO
+
I SOUR
C
AO
-I
SI
NK
AO
-I
SO
UR
C
OR
+I
SINK
RE
LAY
1
NC1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
1
NC
1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
1
NC
1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
2
NC
2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
RE
LAY
1
NC1
RE
LAY
1
CM
1
RE
LAY
1
NO
1
RE
LAY
2
NC2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
AO
-I
SI
NK
AO
-I
SO
UR
C
OR
+I
SINK
AO
+
I SOUR
C
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
RE
LAY
2
NC2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
RE
LAY
2
NC
2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
RE
LAY
2
NC
2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
GN
D
- DC
C
+
DC
RE
LAY
2
NC2
RE
LAY
2
CM
2
RE
LAY
2
NO
2
7