80-4280-10, Rev. 4
3 Identify Device
: Causes the ACKNOWLEDGE
LED on the DCM-2 to flash for two seconds.
Ensures the HART system is addressing the
correct actuator.
4 Board Reset
: Causes the DCM-2 to initiate
a reset cycle similar to a power-up reset.
This manual reset will cause the actuator to
reposition. This procedure is not typically
necessary.
MENU 4J -- CW Torque
This menu displays the peak output shaft
torque measured for 10 segments. These torque
values are measured with the motor running and
moving the output shaft CW.
MENU 4K -- CCW Torque
This menu displays the peak output shaft
torque measured for 10 segments. These torque
values are measured with the motor running and
moving the output shaft CCW.
MENU 4L -- Alarm Setup
The Alarm Setup menu parameters allow
modification of the behavior of the alarm.
1 AlarmPol
: Whether the solid state relay
opens on alarm or closes on alarm.
2 Alarm Mask
: Link to the Alarm Mask menu
which allows specific alarm conditions to be
ignored.
MENU 5H -- Alarm Mask
Allows selection of alarm conditions that will not
cause an alarm at terminal E.
MENU 4M -- RealTimeClock
This menu allows the date and time to be set.
1 RTC Day:
Day of the month (numeric value).
2 RTC Month
: Month (numeric value).
3 RTC Year
: Year (4 digits).
4 Hour (24)
: Hour of the day (24 hour format).
5 Minute
: Minute of the hour (0 through 59).
MENU 3G -- Calibration Trim
The Calibration Trim menu sets and displays
actuator calibration values.
Note that changing the
calibration trim can cause signal measurement
difficulties if performed improperly.
1 PresCPS V
: Displays and/or trims the present
voltage of the position signal. This value
may also be measured at DCM-2 test points
TP1(–) and TP4(+). This trim is set and tested
at the factory. Changing this value can cause
voltage measurement errors.
2 Loop(Dem)
: Displays the Demand signal
as measured at the field wiring terminals
(14 & 15). When the Demand control loop
signal is being overridden by a special mode
of operation, the effective Demand will not
correspond to the mA value. This value can be
edited to trim the Demand to ensure accurate
measurement of the analog signal. Demand
can only be trimmed at 4.0 mA and 20.0 mA.
3 Feedback
: Displays the mA signal
representing the output shaft position as
measured at the field wiring terminals (16 &
17). This value can be edited.
4
Trq/Thrust
: Displays the load measured at the
output shaft as a percentage of rated torque.
This is also a short cut to set the 0% torque
parameter (“Trq Null”) by removing load from
the output shaft, then setting this value to “0”.
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