HIM
10
The Interface Solution Experts
Smart HART
Loop
Interface and Monitor
Installing the HIM
There are two methods for connecting the HIM for
configuration. The recommended method requires
you to install the instrument into the loop before it
is configured. The secondary method allows you to
bench check the HIM by attaching it to test equipment
that will simulate the input and monitor the output.
Installing the HIM into the Loop
To install the HIM into the loop for configuration, use
the equipment shown in Table 2. Refer to Figure 5 (to
install without using the TX power supply) or Figure 6
(to install using the TX power supply).
Bench Checking the HIM
If you would like to configure the HIM before attaching
it to the loop, you need to hook it up with the
equipment listed in Table 1. Refer to Figures 3 and 4
for instructions on how to bench check the HIM either
with or without taking advantage of the Transmitter
Excitation (+TX) terminal. If you need further
descriptions of the terminals, see Table 2.
Precision Load
Resistor
Multimeter or
Ammeter
Power
Supply
Personal Computer
Moore Industries
PC Configuration
Software
Communication
Cable
250 ohms, ±0.01%
Accurate to ±0.009% of span,
e.g. HP Model 3487A
24Vdc, ±10%
Microsoft Windows based PC;16Mb free
RAM; 20MB free disk space on hard drive
Microsoft Windows 7, 10
1 (one) serial port or one available USB
port
Version 1.0 or higher, successfully installed
to the hard drive
9-Pin Serial Cable Part# 803-053-26 or
USB Cable Part# 804-030-26
Device Specifications
Table 2.
Assembling the Necessary Equipment
Figure 3.
Bench Checking the HIM Using the Transmitter Excitation
(+TX) Terminal to Power a Transmitter
Figure 4.
Bench Checking the HIM Using and External Power
Source to Power a Transmitter
READY
INPUT
TRIP 2
TRIP 1
COM
0
ADDR
For a HART Transmitter, the
resistor must be >250
and <1100 ohms
.
For a HART Receiver, such as a
valve positioner, no resistor is necessary.
HART
Field Device
or
Simulator
Sensor
Input
Optional
Optional
Checks for
continuity
24Vdc
Power
R
+IN
NO
NC
CO
M
–IN
+
+
–
–
+
–
+
–
Multimeter
Multimeter
24Vdc
Power
(+) DC
GND
(-) DCC
READY
INPUT
TRIP 2
TRIP 1
COM
0
ADDR
Optional
Checks for
continuity
NO
NC
COM
+
–
+
–
Multimeter
Multimeter
24Vdc
Power
HART
Field Device
or
Simulator
Sensor
Input
Equipment Hook-Up
for HART field device using
Transmitter Excitation
R
+TX
–IN
+IN
+
–
R must be > 250 and <1100 Ohms
(+) DC
GND
(-) DCC
