Beck, R&J ELECTRIC ACTUATORS FOR INDUSTRIAL PROCESSCONTROL 11-1_9 用户手册
48
DCM-2 HART INTERFACE
Configuration and Setup
WARNING
Carefully follow the on-screen warnings
and messages when proceeding, because
changing this parameter online could cause
the drive to reposition. This can adversely
affect the process and cause potentially
dangerous conditions.
and messages when proceeding, because
changing this parameter online could cause
the drive to reposition. This can adversely
affect the process and cause potentially
dangerous conditions.
Changing LOS Trip Point
STEP 1
- From the HART
®
communicator
“Online” menu, move to the “Demand Setup”
menu and select the “DemLimLwr” parameter.
This is accomplished by using the up and down
arrow keys to select the appropriate item in each
menu and then moving forward by pressing the
right arrow key. Follow the Menu Tree (Figure 1,
page 34) to navigate.
menu and select the “DemLimLwr” parameter.
This is accomplished by using the up and down
arrow keys to select the appropriate item in each
menu and then moving forward by pressing the
right arrow key. Follow the Menu Tree (Figure 1,
page 34) to navigate.
STEP 2
- With the “DemLimLwr” parameter
selected, press the right arrow key to display the
modifiable entry block. Using the alphanumeric
keypad, enter the desired Demand signal lower
limit value in mA outside of the Demand signal
range.
STEP
modifiable entry block. Using the alphanumeric
keypad, enter the desired Demand signal lower
limit value in mA outside of the Demand signal
range.
STEP
3
- With desired value correctly typed
into the entry box, push the F4 function key which
is defined as the ENTER key at the bottom of the
display. Pushing this key enters the value and
reverts the display back to the “Demand Setup”
main menu.
is defined as the ENTER key at the bottom of the
display. Pushing this key enters the value and
reverts the display back to the “Demand Setup”
main menu.
STEP 4
- At the bottom of the “Demand Setup”
menu, the F2 function key should now be defined
as the SEND key. Push this key to execute the
change.
as the SEND key. Push this key to execute the
change.
WARNING
Carefully follow the on-screen warnings
and messages when proceeding, because
changing this parameter online could cause
the drive to reposition. This can adversely
affect the process and cause potentially
dangerous conditions.
and messages when proceeding, because
changing this parameter online could cause
the drive to reposition. This can adversely
affect the process and cause potentially
dangerous conditions.
TORQUE OPTIONS
DCM-2 boards have the capability to measure
the drive’s torque output. This, in turn, makes
it possible to provide several torque-related
features. The features include a live display
of the torque output on the 275/375 HART
it possible to provide several torque-related
features. The features include a live display
of the torque output on the 275/375 HART
®
Communicator display or any other device
capable of communicating and displaying HART
capable of communicating and displaying HART
®
transmitted variables. Included is the ability to
store peak torque values within the DCM-2 and
view them by accessing the device information
menu. To protect the drive gearing and related
equipment, the drive can be configured to shut
off if the torque exceeds 150% of the drive torque
rating. And finally, the DCM-2 will provide a high
torque alarm, via HART
store peak torque values within the DCM-2 and
view them by accessing the device information
menu. To protect the drive gearing and related
equipment, the drive can be configured to shut
off if the torque exceeds 150% of the drive torque
rating. And finally, the DCM-2 will provide a high
torque alarm, via HART
®
communications, that
alerts the user to a high torque condition when
the torque output exceeds a set value (normally
set at 105% of the drive rating).
the torque output exceeds a set value (normally
set at 105% of the drive rating).