6
AW T 210
H A R T 2- W I R E T R A N SM I T T ER | CO M/AW T 2 10/H A R T- EN R E V. B
3 Transmitter functionality and
operator interface controls
Process interface
Sensor Input Channels
The sensor module provides 8 terminals marked 1 to 8, 1 to 4 for
Process Variable (detailed in commissioning instructions) and 5
to 8 for temperature sensor (up to 3 wire RTD + shield).
Operating ranges correspond to the capabilities of each sensor
type.
Host interface
The 2-wire 4 to 20 mA current loop is connected via terminals 1
and 2 on the HART communications module and can be tested
via terminals 4 and 5.
Output from the transmitter representing the PV measurement
linearized and scaled according to the engineering range set on
the instrument. PV% is displayed on the
Signals View page.
Analog output
Value
Below Lower Range
3.8 mA
Above Upper Range
20.5 mA
Device malfunction indication
Maximum current
22.0 mA
Multi-drop current draw
3.6 mA
Lift-off voltage
12V
Local interfaces, jumpers and switches
Local controls and displays
• The Device has a 75 x 65 mm (3.00 x 2.55 in.) monochromatic
dot matrix LCD display and 4 push buttons
Internal jumpers and switches
• The device has 2 internal switches, situated on the top
righthand side of the HART Communication Module –
see Figure 1.
• SW1: Reset to Defaults
– If the device is powered up with SW1 in the
ON position it
returns device setup to default factory settings. If powered
up with SW1 in the
OFF position the device retains
previously saved user settings*.
• SW2: Write Protection
– If SW2 is in the
ON position HW write protect shows as
enabled and the user is unable to make changes to setup or
send Write commands via HART. With SW2 in
OFF position
the user is able to make changes/send commands providing
they are in a sufficient access level and
Software Write
Protect
has not been enabled.
*Reset to defaults is not performed if
SW2 Write Protection
is
ON
.
4 Installation
This section provides installation instructions specific to the
AWT210 HART functionality.
WARNING – BODILY INJURY
• For general mechanical, electrical and hazardous
location installation requirements refer to the
AWT210 Operating Instructions (
• The signal/power terminals accept wire sizes
0.14 mm² (26 AWG) to 1.5 mm²(14 AWG).
• Wiring should not be run in conduit or open trays
where power or heavy electrical equipment could
physically or electrically interfere with the signal
wiring. Twisted, shielded pairs should be used for
cabling to ensure best performance. Reverse
polarity protection, built into the transmitter,
protects it against accidental reversal of the
field wiring connections.
Figure 1 HART communication module connection overview
Sensor module connections
Communication module
connections
HART modules
Power Ammeter
1 2 3 4 5 6
8
7
1 2
4
3
5
+ –
+ –
Non IS installations
14 to 42 V DC
IS installations
14 to 30 V DC
Functional earth
Ammeter connection
for loop current test
SW1:
Reset to
defaults
ON
OFF
SW2:
Write
protection