80-4280-10, Rev. 4
APPENDIX
HART
®
Communication
MENU 3F -- Diagnostics
Provides paths to menus that allow
investigation of actuator problems through status
indicators, self-test routines, output shaft loading
history, alarm setup and setting of the DCM-2 real
time clock. Menu item links are “Status”, “Tests”,
“CW Torque”, “CCW Torque”, “Alarm Setup”, and
“RealTimeClock”.
MENU 4H -- Status
This menu provides links to menus that
monitor the operational status of the actuator. It
also displays one parameter, line frequency.
5 Line Freq
: The power line frequency as
measured by the DCM-2.
MENU 5B -- LED Status
The LED Status parameter allows remote
checking of which LEDs on the DCM-2 are
illuminated.
MENU 5C -- Operating Status
The Operating Status parameter is a summary
of whether process-related conditions are inside
or outside of anticipated limits. These conditions
control the Status Indication LEDs. Each
parameter is listed with an ON or OFF state. The
ON state is described below.
1 Dem <> Limits
: Caused by the Demand signal
falling below or above acceptable levels.
2 Pos <> Limits
: Caused by the CPS-4 signal
being outside the range anticipated by the
DCM-2.
3 Temp <> Limits
: The ambient temperature of
the DCM-2 is outside of the rating.
4 Torq <> Limits
: Measured torque exceeds
the configured alarm level.
5 Over Torq Stop
: Overtorque protection is
preventing the DCM-2 from running the motor.
6 Stalled
: A Stall alarm is active.
7 Feedback Open
: The Feedback signal is
enabled, but cannot follow the proper current.
8 Switch Block
: The DCM-2 cannot power the
motor due to an electro-mechanical switch.
Check the Handswitch and over-travel limit
switches.
MENU 5D -- Switch Status
Each parameter will be listed with an ON or
OFF state. The ON state is described below.
Limit CCW:
The CCW over-travel limit switch
has been reached.
Limit CW:
The CW over-travel limit switch
has been reached.
OvrRd CCW:
The CCW manual override
terminal (20) is shorted to the common (18).
OvrRd CW:
The CW manual override terminal
(19) is shorted to the common (18).
OvrRd STOP:
The STOP manual override
terminal (21) is shorted to the common (18).
HndSw CCW:
The handswitch is in the CCW
position.
HndSw CW:
The handswitch is in the CW
position.
HndSw AUTO:
The handswitch is in the
AUTO position.
MENU 5E -- Local Cntrl Status
This parameter allows remote monitoring of
which buttons on the local configuration interface
are being pressed.
MENU 5F -- CW Inhibitors
Allows viewing of the DCM-2 condition that is
preventing the actuator motor from running in the
CW direction.
MENU 5G -- CCW Inhibitors
Allows viewing of the DCM-2 condition that is
preventing the actuator motor from running in the
CCW direction.
MENU 4I -- Tests
This menu provides access to some routines
that help determine if the actuator is functioning
properly.
1 FB Out Test
: Allows manual verification of
the Feedback output signal to check operation
and accuracy.
2 Board Self-Test
: Instructs the DCM-2 to
check various power and sensing circuits.
This test will cause the actuator to reposition,
so it should be run offline and only when a
DCM-2 problem is suspected.
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