Rosemount Model 3095 Multivariable Level Controller
A-4
CONNECTIONS AND
HARDWARE
The HART Communicator Model 275 can interface with a transmitter
from the control room, the instrument site, or any wiring termination
point in the loop through the rear connection panel as shown in Figure
A-2. To communicate, connect the HART Communicator in parallel
with the instrument or load resistor. The connections are non-polarized.
Do not make connections to the serial port or NiCad recharger jack in
an explosive atmosphere.
FIGURE A-2. Rear Connection Panel
with Optional NiCad Recharger Pack.
Before connecting the HART Communicator in an explosive
atmosphere, make sure the instruments in the loop are installed
in accordance with intrinsically safe or non-incendive field
wiring practices.
NOTE
The HART Communicator needs a minimum of 250 ohms resistance in
the loop to function properly. The HART Communicator does not
measure loop current directly.
Function
HART Communicator
Fast Key Sequences
Function
HART Communicator
Fast Key Sequences
Software rev 6, 4, 4, 3 Tuning Hi Limit 6, 2, 4, 3, 1
Tag 6, 4, 3, 2 Tuning Lo Limit 6, 2, 4, 3, 2
Target Mode 3 Tuning Rate 6, 2, 4, 8
Time Limit 6, 2, 4, 3, 5 Tuning Reset 6, 2, 4, 7
Tuner 6, 2, 4, 1 Tuning Status 6, 2, 4, 2
Tune Out Max 6, 2, 4, 3, 6 Universal rev 6, 4, 4, 1
Tune Out Min 6, 2, 4, 3, 7 View Status 6, 3, 6
Tuning Bias 6, 2, 4, – Write protect 6, 4, 3, 7
Tuning Gain 6, 2, 4, 6 Xmtr Height 6, 1, 1, 1, 4
Loop Connection Ports
Serial Port
Optional NiCad
Recharger Jack
275-008AB
To Next Page
Loading...
